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MySQLTuner-perl/mysqltuner.pl
Christian Loos 11a8110922 fix dependency check for Text::Template 
fixes #133 and #136
2015-11-23 08:40:00 +01:00

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#!/usr/bin/env perl
# mysqltuner.pl - Version 1.6.1
# High Performance MySQL Tuning Script
# Copyright (C) 2006-2015 Major Hayden - major@mhtx.net
#
# For the latest updates, please visit http://mysqltuner.com/
# Git repository available at http://github.com/major/MySQLTuner-perl
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This project would not be possible without help from:
# Matthew Montgomery Paul Kehrer Dave Burgess
# Jonathan Hinds Mike Jackson Nils Breunese
# Shawn Ashlee Luuk Vosslamber Ville Skytta
# Trent Hornibrook Jason Gill Mark Imbriaco
# Greg Eden Aubin Galinotti Giovanni Bechis
# Bill Bradford Ryan Novosielski Michael Scheidell
# Blair Christensen Hans du Plooy Victor Trac
# Everett Barnes Tom Krouper Gary Barrueto
# Simon Greenaway Adam Stein Isart Montane
# Baptiste M. Cole Turner Major Hayden
# Joe Ashcraft Jean-Marie Renouard
#
# Inspired by Matthew Montgomery's tuning-primer.sh script:
# http://forge.mysql.com/projects/view.php?id=44
#
package main;
use 5.005;
use strict;
use warnings;
use diagnostics;
use File::Spec;
use Getopt::Long;
use File::Basename;
use Cwd 'abs_path';
use Data::Dumper;
$Data::Dumper::Pair = " : ";
# Set up a few variables for use in the script
my $tunerversion = "1.6.1";
my ( @adjvars, @generalrec );
# Set defaults
my %opt = (
"silent" => 0,
"nobad" => 0,
"nogood" => 0,
"noinfo" => 0,
"debug" => 0,
"nocolor" => 0,
"forcemem" => 0,
"forceswap" => 0,
"host" => 0,
"socket" => 0,
"port" => 0,
"user" => 0,
"pass" => 0,
"skipsize" => 0,
"checkversion" => 0,
"buffers" => 0,
"passwordfile" => 0,
"outputfile" => 0,
"dbstat" => 0,
"idxstat" => 0,
"skippassword" => 0,
"noask" => 0,
"template" => 0,
"reportfile" => 0
);
# Gather the options from the command line
GetOptions(
\%opt, 'nobad', 'nogood', 'noinfo',
'debug', 'nocolor', 'forcemem=i', 'forceswap=i',
'host=s', 'socket=s', 'port=i', 'user=s',
'pass=s', 'skipsize', 'checkversion', 'mysqladmin=s',
'mysqlcmd=s', 'help', 'buffers', 'skippassword',
'passwordfile=s', 'outputfile=s', 'silent', 'dbstat',
'idxstat', 'noask', 'template=s', 'reportfile=s'
);
if ( defined $opt{'help'} && $opt{'help'} == 1 ) { usage(); }
sub usage {
# Shown with --help option passed
print " MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n"
. " Bug reports, feature requests, and downloads at http://mysqltuner.com/\n"
. " Maintained by Major Hayden (major\@mhtx.net) - Licensed under GPL\n"
. "\n"
. " Important Usage Guidelines:\n"
. " To run the script with the default options, run the script without arguments\n"
. " Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n"
. " Some routines may require root level privileges (script will provide warnings)\n"
. " You must provide the remote server's total memory when connecting to other servers\n"
. "\n"
. " Connection and Authentication\n"
. " --host <hostname> Connect to a remote host to perform tests (default: localhost)\n"
. " --socket <socket> Use a different socket for a local connection\n"
. " --port <port> Port to use for connection (default: 3306)\n"
. " --user <username> Username to use for authentication\n"
. " --pass <password> Password to use for authentication\n"
. " --mysqladmin <path> Path to a custom mysqladmin executable\n"
. " --mysqlcmd <path> Path to a custom mysql executable\n" . "\n"
. " --noask Dont ask password if needed\n" . "\n"
. " Performance and Reporting Options\n"
. " --skipsize Don't enumerate tables and their types/sizes (default: on)\n"
. " (Recommended for servers with many tables)\n"
. " --skippassword Don't perform checks on user passwords(default: off)\n"
. " --checkversion Check for updates to MySQLTuner (default: don't check)\n"
. " --forcemem <size> Amount of RAM installed in megabytes\n"
. " --forceswap <size> Amount of swap memory configured in megabytes\n"
. " --passwordfile <path>Path to a password file list(one password by line)\n"
. " Output Options:\n"
. " --silent Don't output anything on screen\n"
. " --nogood Remove OK responses\n"
. " --nobad Remove negative/suggestion responses\n"
. " --noinfo Remove informational responses\n"
. " --debug Print debug information\n"
. " --dbstat Print database information\n"
. " --idxstat Print index information\n"
. " --nocolor Don't print output in color\n"
. " --buffers Print global and per-thread buffer values\n"
. " --outputfile <path> Path to a output txt file\n" . "\n"
. " --reportfile <path> Path to a report txt file\n" . "\n"
. " --template <path> Path to a template file\n" . "\n";
exit 0;
}
my $devnull = File::Spec->devnull();
my $basic_password_files =
( $opt{passwordfile} eq "0" )
? abs_path( dirname(__FILE__) ) . "/basic_passwords.txt"
: abs_path( $opt{passwordfile} );
# for RPM distributions
$basic_password_files = "/usr/share/mysqltuner/basic_passwords.txt"
unless -f "$basic_password_files";
#
my $outputfile = undef;
$outputfile = abs_path( $opt{outputfile} ) unless $opt{outputfile} eq "0";
my $fh = undef;
open( $fh, '>', $outputfile )
or die("Fail opening $outputfile")
if defined($outputfile);
$opt{nocolor} = 1 if defined($outputfile);
# Setting up the colors for the print styles
my $good = ( $opt{nocolor} == 0 ) ? "[\e[0;32mOK\e[0m]" : "[OK]";
my $bad = ( $opt{nocolor} == 0 ) ? "[\e[0;31m!!\e[0m]" : "[!!]";
my $info = ( $opt{nocolor} == 0 ) ? "[\e[0;34m--\e[0m]" : "[--]";
my $deb = ( $opt{nocolor} == 0 ) ? "[\e[0;31mDG\e[0m]" : "[DG]";
# Super sturucture containing all informations
my %result;
# Functions that handle the print styles
sub prettyprint {
print $_[0] . "\n" unless $opt{'silent'};
print $fh $_[0] . "\n" if defined($fh);
}
sub goodprint { prettyprint $good. " " . $_[0] unless ( $opt{nogood} == 1 ); }
sub infoprint { prettyprint $info. " " . $_[0] unless ( $opt{noinfo} == 1 ); }
sub badprint { prettyprint $bad. " " . $_[0] unless ( $opt{nobad} == 1 ); }
sub debugprint { prettyprint $deb. " " . $_[0] unless ( $opt{debug} == 0 ); }
sub redwrap {
return ( $opt{nocolor} == 0 ) ? "\e[0;31m" . $_[0] . "\e[0m" : $_[0];
}
sub greenwrap {
return ( $opt{nocolor} == 0 ) ? "\e[0;32m" . $_[0] . "\e[0m" : $_[0];
}
# Calculates the parameter passed in bytes, and then rounds it to one decimal place
sub hr_bytes {
my $num = shift;
if ( $num >= ( 1024**3 ) ) { #GB
return sprintf( "%.1f", ( $num / ( 1024**3 ) ) ) . "G";
}
elsif ( $num >= ( 1024**2 ) ) { #MB
return sprintf( "%.1f", ( $num / ( 1024**2 ) ) ) . "M";
}
elsif ( $num >= 1024 ) { #KB
return sprintf( "%.1f", ( $num / 1024 ) ) . "K";
}
else {
return $num . "B";
}
}
# Calculates the parameter passed in bytes, and then rounds it to the nearest integer
sub hr_bytes_rnd {
my $num = shift;
if ( $num >= ( 1024**3 ) ) { #GB
return int( ( $num / ( 1024**3 ) ) ) . "G";
}
elsif ( $num >= ( 1024**2 ) ) { #MB
return int( ( $num / ( 1024**2 ) ) ) . "M";
}
elsif ( $num >= 1024 ) { #KB
return int( ( $num / 1024 ) ) . "K";
}
else {
return $num . "B";
}
}
# Calculates the parameter passed to the nearest power of 1000, then rounds it to the nearest integer
sub hr_num {
my $num = shift;
if ( $num >= ( 1000**3 ) ) { # Billions
return int( ( $num / ( 1000**3 ) ) ) . "B";
}
elsif ( $num >= ( 1000**2 ) ) { # Millions
return int( ( $num / ( 1000**2 ) ) ) . "M";
}
elsif ( $num >= 1000 ) { # Thousands
return int( ( $num / 1000 ) ) . "K";
}
else {
return $num;
}
}
# Calculate Percentage
sub percentage {
my $value = shift;
my $total = shift;
$total = 0 unless defined $total;
return 100, 00 if $total == 0;
return sprintf( "%.2f", ( $value * 100 / $total ) );
}
# Calculates uptime to display in a more attractive form
sub pretty_uptime {
my $uptime = shift;
my $seconds = $uptime % 60;
my $minutes = int( ( $uptime % 3600 ) / 60 );
my $hours = int( ( $uptime % 86400 ) / (3600) );
my $days = int( $uptime / (86400) );
my $uptimestring;
if ( $days > 0 ) {
$uptimestring = "${days}d ${hours}h ${minutes}m ${seconds}s";
}
elsif ( $hours > 0 ) {
$uptimestring = "${hours}h ${minutes}m ${seconds}s";
}
elsif ( $minutes > 0 ) {
$uptimestring = "${minutes}m ${seconds}s";
}
else {
$uptimestring = "${seconds}s";
}
return $uptimestring;
}
# Retrieves the memory installed on this machine
my ( $physical_memory, $swap_memory, $duflags );
sub os_setup {
sub memerror {
badprint
"Unable to determine total memory/swap; use '--forcemem' and '--forceswap'";
exit 1;
}
my $os = `uname`;
$duflags = ( $os =~ /Linux/ ) ? '-b' : '';
if ( $opt{'forcemem'} > 0 ) {
$physical_memory = $opt{'forcemem'} * 1048576;
infoprint "Assuming $opt{'forcemem'} MB of physical memory";
if ( $opt{'forceswap'} > 0 ) {
$swap_memory = $opt{'forceswap'} * 1048576;
infoprint "Assuming $opt{'forceswap'} MB of swap space";
}
else {
$swap_memory = 0;
badprint
"Assuming 0 MB of swap space (use --forceswap to specify)";
}
}
else {
if ( $os =~ /Linux|CYGWIN/ ) {
$physical_memory =
`grep -i memtotal: /proc/meminfo | awk '{print \$2}'`
or memerror;
$physical_memory *= 1024;
$swap_memory =
`grep -i swaptotal: /proc/meminfo | awk '{print \$2}'`
or memerror;
$swap_memory *= 1024;
}
elsif ( $os =~ /Darwin/ ) {
$physical_memory = `sysctl -n hw.memsize` or memerror;
$swap_memory =
`sysctl -n vm.swapusage | awk '{print \$3}' | sed 's/\..*\$//'`
or memerror;
}
elsif ( $os =~ /NetBSD|OpenBSD|FreeBSD/ ) {
$physical_memory = `sysctl -n hw.physmem` or memerror;
if ( $physical_memory < 0 ) {
$physical_memory = `sysctl -n hw.physmem64` or memerror;
}
$swap_memory =
`swapctl -l | grep '^/' | awk '{ s+= \$2 } END { print s }'`
or memerror;
}
elsif ( $os =~ /BSD/ ) {
$physical_memory = `sysctl -n hw.realmem` or memerror;
$swap_memory =
`swapinfo | grep '^/' | awk '{ s+= \$2 } END { print s }'`;
}
elsif ( $os =~ /SunOS/ ) {
$physical_memory =
`/usr/sbin/prtconf | grep Memory | cut -f 3 -d ' '`
or memerror;
chomp($physical_memory);
$physical_memory = $physical_memory * 1024 * 1024;
}
elsif ( $os =~ /AIX/ ) {
$physical_memory =
`lsattr -El sys0 | grep realmem | awk '{print \$2}'`
or memerror;
chomp($physical_memory);
$physical_memory = $physical_memory * 1024;
$swap_memory = `lsps -as | awk -F"(MB| +)" '/MB /{print \$2}'`
or memerror;
chomp($swap_memory);
$swap_memory = $swap_memory * 1024 * 1024;
}
}
debugprint "Physical Memory: $physical_memory";
debugprint "Swap Memory: $swap_memory";
chomp($physical_memory);
chomp($swap_memory);
chomp($os);
$result{'OS'}{'OS Type'} = $os;
$result{'OS'}{'Physical Memory'}{'bytes'} = $physical_memory;
$result{'OS'}{'Physical Memory'}{'pretty'} = hr_bytes($physical_memory);
$result{'OS'}{'Swap Memory'}{'bytes'} = $swap_memory;
$result{'OS'}{'Swap Memory'}{'pretty'} = hr_bytes($swap_memory);
}
# Checks for updates to MySQLTuner
sub validate_tuner_version {
if ($opt{checkversion} eq 0) {
infoprint "Skipped version check for MySQLTuner script";
return;
}
my $update;
my $url = "https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.pl";
my $httpcli=`which curl`;
chomp($httpcli);
if ( 1 != 1 and defined($httpcli) and -e "$httpcli" ) {
debugprint "$httpcli is available.";
debugprint "$httpcli --connect-timeout 5 -silent '$url' 2>/dev/null | grep 'my \$tunerversion'| cut -d\\\" -f2";
$update = `$httpcli --connect-timeout 5 -silent '$url' 2>/dev/null | grep 'my \$tunerversion'| cut -d\\\" -f2`;
chomp($update);
debugprint "VERSION: $update";
compare_tuner_version($update);
return;
}
$httpcli=`which wget`;
chomp($httpcli);
if ( defined($httpcli) and -e "$httpcli" ) {
debugprint "$httpcli is available.";
debugprint "$httpcli -e timestamping=off -T 5 -O - '$url' 2>$devnull| grep 'my \$tunerversion'| cut -d\\\" -f2";
$update = `$httpcli -e timestamping=off -T 5 -O - '$url' 2>$devnull| grep 'my \$tunerversion'| cut -d\\\" -f2`;
chomp($update);
compare_tuner_version($update);
return;
}
debugprint "curl and wget are not avalaible.";
infoprint "Unable to check for the latest MySQLTuner version";
}
sub compare_tuner_version {
my $remoteversion=shift;
debugprint "Remote data: $remoteversion";
#exit 0;
if ($remoteversion ne $tunerversion) {
badprint "There is a new version of MySQLTuner available ($remoteversion)";
return;
}
goodprint "You have the latest version of MySQLTuner($tunerversion)";
return;
}
# Checks to see if a MySQL login is possible
my ( $mysqllogin, $doremote, $remotestring, $mysqlcmd, $mysqladmincmd );
my $osname = $^O;
if( $osname eq 'MSWin32' ) {
eval { require Win32; } or last;
$osname = Win32::GetOSName();
#print "\nOS Name: $osname";
print "* Windows OS($osname) is not supported.\n";
exit 1;
}
sub mysql_setup {
$doremote = 0;
$remotestring = '';
if ( $opt{mysqladmin} ) {
$mysqladmincmd = $opt{mysqladmin};
}
else {
$mysqladmincmd = `which mysqladmin`;
}
chomp($mysqladmincmd);
if ( !-e $mysqladmincmd && $opt{mysqladmin} ) {
badprint "Unable to find the mysqladmin command you specified: "
. $mysqladmincmd . "";
exit 1;
}
elsif ( !-e $mysqladmincmd ) {
badprint
"Couldn't find mysqladmin in your \$PATH. Is MySQL installed?";
exit 1;
}
if ( $opt{mysqlcmd} ) {
$mysqlcmd = $opt{mysqlcmd};
}
else {
$mysqlcmd = `which mysql`;
}
chomp($mysqlcmd);
if ( !-e $mysqlcmd && $opt{mysqlcmd} ) {
badprint "Unable to find the mysql command you specified: "
. $mysqlcmd . "";
exit 1;
}
elsif ( !-e $mysqlcmd ) {
badprint "Couldn't find mysql in your \$PATH. Is MySQL installed?";
exit 1;
}
$mysqlcmd =~ s/\n$//g;
my $mysqlclidefaults=`$mysqlcmd --print-defaults`;
debugprint "MySQL Client: $mysqlclidefaults";
if ( $mysqlclidefaults=~/auto-vertical-output/ ) {
badprint "Avoid auto-vertical-output in configuration file(s) for MySQL like";
exit 1;
}
debugprint "MySQL Client: $mysqlcmd";
# Are we being asked to connect via a socket?
if ( $opt{socket} ne 0 ) {
$remotestring = " -S $opt{socket}";
}
# Are we being asked to connect to a remote server?
if ( $opt{host} ne 0 ) {
chomp( $opt{host} );
$opt{port} = ( $opt{port} eq 0 ) ? 3306 : $opt{port};
# If we're doing a remote connection, but forcemem wasn't specified, we need to exit
if ( $opt{'forcemem'} eq 0 ) {
badprint
"The --forcemem option is required for remote connections";
exit 1;
}
infoprint "Performing tests on $opt{host}:$opt{port}";
$remotestring = " -h $opt{host} -P $opt{port}";
$doremote = 1;
}
# Did we already get a username and password passed on the command line?
if ( $opt{user} ne 0 and $opt{pass} ne 0 ) {
$mysqllogin = "-u $opt{user} -p'$opt{pass}'" . $remotestring;
my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`;
if ( $loginstatus =~ /mysqld is alive/ ) {
goodprint
"Logged in using credentials passed on the command line";
return 1;
}
else {
badprint
"Attempted to use login credentials, but they were invalid";
exit 1;
}
}
my $svcprop = `which svcprop 2>/dev/null`;
if ( substr( $svcprop, 0, 1 ) =~ "/" ) {
# We are on solaris
( my $mysql_login =
`svcprop -p quickbackup/username svc:/network/mysql-quickbackup:default`
) =~ s/\s+$//;
( my $mysql_pass =
`svcprop -p quickbackup/password svc:/network/mysql-quickbackup:default`
) =~ s/\s+$//;
if ( substr( $mysql_login, 0, 7 ) ne "svcprop" ) {
# mysql-quickbackup is installed
$mysqllogin = "-u $mysql_login -p$mysql_pass";
my $loginstatus = `mysqladmin $mysqllogin ping 2>&1`;
if ( $loginstatus =~ /mysqld is alive/ ) {
goodprint
"Logged in using credentials from mysql-quickbackup.";
return 1;
}
else {
badprint
"Attempted to use login credentials from mysql-quickbackup, but they failed.";
exit 1;
}
}
}
elsif ( -r "/etc/psa/.psa.shadow" and $doremote == 0 ) {
# It's a Plesk box, use the available credentials
$mysqllogin = "-u admin -p`cat /etc/psa/.psa.shadow`";
my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`;
unless ( $loginstatus =~ /mysqld is alive/ ) {
badprint
"Attempted to use login credentials from Plesk, but they failed.";
exit 1;
}
}
elsif ( -r "/usr/local/directadmin/conf/mysql.conf" and $doremote == 0 ) {
# It's a DirectAdmin box, use the available credentials
my $mysqluser =
`cat /usr/local/directadmin/conf/mysql.conf | egrep '^user=.*'`;
my $mysqlpass =
`cat /usr/local/directadmin/conf/mysql.conf | egrep '^passwd=.*'`;
$mysqluser =~ s/user=//;
$mysqluser =~ s/[\r\n]//;
$mysqlpass =~ s/passwd=//;
$mysqlpass =~ s/[\r\n]//;
$mysqllogin = "-u $mysqluser -p$mysqlpass";
my $loginstatus = `mysqladmin ping $mysqllogin 2>&1`;
unless ( $loginstatus =~ /mysqld is alive/ ) {
badprint
"Attempted to use login credentials from DirectAdmin, but they failed.";
exit 1;
}
}
elsif ( -r "/etc/mysql/debian.cnf" and $doremote == 0 ) {
# We have a debian maintenance account, use it
$mysqllogin = "--defaults-file=/etc/mysql/debian.cnf";
my $loginstatus = `$mysqladmincmd $mysqllogin ping 2>&1`;
if ( $loginstatus =~ /mysqld is alive/ ) {
goodprint
"Logged in using credentials from debian maintenance account.";
return 1;
}
else {
badprint
"Attempted to use login credentials from debian maintenance account, but they failed.";
exit 1;
}
}
else {
# It's not Plesk or debian, we should try a login
debugprint "$mysqladmincmd $remotestring ping 2>&1";
my $loginstatus = `$mysqladmincmd $remotestring ping 2>&1`;
if ( $loginstatus =~ /mysqld is alive/ ) {
# Login went just fine
$mysqllogin = " $remotestring ";
# Did this go well because of a .my.cnf file or is there no password set?
my $userpath = `printenv HOME`;
if ( length($userpath) > 0 ) {
chomp($userpath);
}
unless ( -e "${userpath}/.my.cnf" or -e "${userpath}/.mylogin.cnf" )
{
badprint
"Successfully authenticated with no password - SECURITY RISK!";
}
return 1;
}
else {
if ( $opt{'noask'}==1 ) {
badprint "Attempted to use login credentials, but they were invalid";
exit 1;
}
print STDERR "Please enter your MySQL administrative login: ";
my $name = <>;
print STDERR "Please enter your MySQL administrative password: ";
system("stty -echo >$devnull 2>&1");
my $password = <>;
system("stty echo >$devnull 2>&1");
chomp($password);
chomp($name);
$mysqllogin = "-u $name";
if ( length($password) > 0 ) {
$mysqllogin .= " -p'$password'";
}
$mysqllogin .= $remotestring;
my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`;
if ( $loginstatus =~ /mysqld is alive/ ) {
print STDERR "";
if ( !length($password) ) {
# Did this go well because of a .my.cnf file or is there no password set?
my $userpath = `ls -d ~`;
chomp($userpath);
unless ( -e "$userpath/.my.cnf" ) {
badprint
"Successfully authenticated with no password - SECURITY RISK!";
}
}
return 1;
}
else {
badprint " Attempted to use login credentials, but they were invalid.";
exit 1;
}
exit 1;
}
}
}
# MySQL Request Array
sub select_array {
my $req = shift;
debugprint "PERFORM: $req ";
my @result = `$mysqlcmd $mysqllogin -Bse "$req"`;
chomp(@result);
return @result;
}
# MySQL Request one
sub select_one {
my $req = shift;
debugprint "PERFORM: $req ";
my $result = `$mysqlcmd $mysqllogin -Bse "$req"`;
chomp($result);
return $result;
}
sub get_tuning_info {
my @infoconn = select_array "\\s";
my ( $tkey, $tval );
@infoconn =
grep { !/Threads:/ and !/Connection id:/ and !/pager:/ and !/Using/ }
@infoconn;
foreach my $line (@infoconn) {
if ( $line =~ /\s*(.*):\s*(.*)/ ) {
debugprint "$1 => $2";
$tkey = $1;
$tval = $2;
chomp($tkey);
chomp($tval);
$result{'MySQL Client'}{$tkey} = $tval;
}
}
$result{'MySQL Client'}{'Client Path'} = $mysqlcmd;
$result{'MySQL Client'}{'Admin Path'} = $mysqladmincmd;
$result{'MySQL Client'}{'Authentication Info'} = $mysqllogin;
}
# Populates all of the variable and status hashes
my ( %mystat, %myvar, $dummyselect, %myrepl, %myslaves );
sub get_all_vars {
# We need to initiate at least one query so that our data is useable
$dummyselect = select_one "SELECT VERSION()";
debugprint "VERSION: " . $dummyselect . "";
$result{'MySQL Client'}{'Version'} = $dummyselect;
my @mysqlvarlist = select_array "SHOW /*!50000 GLOBAL */ VARIABLES";
foreach my $line (@mysqlvarlist) {
$line =~ /([a-zA-Z_]*)\s*(.*)/;
$myvar{$1} = $2;
$result{'Variables'}{$1} = $2;
debugprint "V: $1 = $2";
}
my @mysqlstatlist = select_array "SHOW /*!50000 GLOBAL */ STATUS";
foreach my $line (@mysqlstatlist) {
$line =~ /([a-zA-Z_]*)\s*(.*)/;
$mystat{$1} = $2;
$result{'Status'}{$1} = $2;
debugprint "S: $1 = $2";
}
# Workaround for MySQL bug #59393 wrt. ignore-builtin-innodb
if ( ( $myvar{'ignore_builtin_innodb'} || "" ) eq "ON" ) {
$myvar{'have_innodb'} = "NO";
}
# have_* for engines is deprecated and will be removed in MySQL 5.6;
# check SHOW ENGINES and set corresponding old style variables.
# Also works around MySQL bug #59393 wrt. skip-innodb
my @mysqlenginelist = select_array "SHOW ENGINES";
foreach my $line (@mysqlenginelist) {
if ( $line =~ /^([a-zA-Z_]+)\s+(\S+)/ ) {
my $engine = lc($1);
if ( $engine eq "federated" || $engine eq "blackhole" ) {
$engine .= "_engine";
}
elsif ( $engine eq "berkeleydb" ) {
$engine = "bdb";
}
my $val = ( $2 eq "DEFAULT" ) ? "YES" : $2;
$myvar{"have_$engine"} = $val;
$result{'Storage Engines'}{$engine} = $2;
}
}
my @mysqlslave = select_array "SHOW SLAVE STATUS\\G";
foreach my $line (@mysqlslave) {
if ( $line =~ /\s*(.*):\s*(.*)/ ) {
debugprint "$1 => $2";
$myrepl{"$1"} = $2;
$result{'Replication'}{'Status'}{$1} = $2;
}
}
my @mysqlslaves = select_array "SHOW SLAVE HOSTS";
my @lineitems = ();
foreach my $line (@mysqlslaves) {
debugprint "L: $line ";
@lineitems = split /\s+/, $line;
$myslaves{ $lineitems[0] } = $line;
$result{'Replication'}{'Slaves'}{ $lineitems[0] } = $lineitems[4];
}
}
sub get_basic_passwords {
my $file = shift;
open( FH, "< $file" ) or die "Can't open $file for read: $!";
my @lines = <FH>;
close FH or die "Cannot close $file: $!";
return @lines;
}
sub security_recommendations {
prettyprint
"\n-------- Security Recommendations -------------------------------------------";
if ( $opt{skippassword} eq 1 ) {
infoprint "Skipped due to --skippassword option";
return;
}
# Looking for Anonymous users
my @mysqlstatlist = select_array
"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE TRIM(USER) = '' OR USER IS NULL";
if (@mysqlstatlist) {
foreach my $line ( sort @mysqlstatlist ) {
chomp($line);
badprint "User '" . $line . "' is an anonymous account.";
}
push( @generalrec,
"Remove Anonymous User accounts - there are "
. scalar(@mysqlstatlist)
. " Anonymous accounts." );
}
else {
goodprint "There are no anonymous accounts for any database users";
}
# Looking for Empty Password
@mysqlstatlist = select_array
"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE password = '' OR password IS NULL";
if (@mysqlstatlist) {
foreach my $line ( sort @mysqlstatlist ) {
chomp($line);
badprint "User '" . $line . "' has no password set.";
}
push( @generalrec,
"Set up a Password for user with the following SQL statement ( SET PASSWORD FOR 'user'\@'SpecificDNSorIp' = PASSWORD('secure_password'); )"
);
}
else {
goodprint "All database users have passwords assigned";
}
# Looking for User with user/ uppercase /capitalise user as password
@mysqlstatlist = select_array
"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE CAST(password as Binary) = PASSWORD(user) OR CAST(password as Binary) = PASSWORD(UPPER(user)) OR CAST(password as Binary) = PASSWORD(UPPER(LEFT(User, 1)) + SUBSTRING(User, 2, LENGTH(User)))";
if (@mysqlstatlist) {
foreach my $line ( sort @mysqlstatlist ) {
chomp($line);
badprint "User '" . $line . "' has user name as password.";
}
push( @generalrec,
"Set up a Secure Password for user\@host ( SET PASSWORD FOR 'user'\@'SpecificDNSorIp' = PASSWORD('secure_password'); )"
);
}
@mysqlstatlist = select_array
"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE HOST='%'";
if (@mysqlstatlist) {
foreach my $line ( sort @mysqlstatlist ) {
chomp($line);
badprint "User '" . $line . "' hasn't specific host restriction.";
}
push( @generalrec,
"Restrict Host for user\@% to user\@SpecificDNSorIp" );
}
unless ( -f $basic_password_files ) {
badprint "There is no basic password file list !";
return;
}
my @passwords = get_basic_passwords $basic_password_files;
infoprint "There are "
. scalar(@passwords)
. " basic passwords in the list.";
my $nbins = 0;
my $passreq;
if (@passwords) {
foreach my $pass (@passwords) {
$pass =~ s/\s//g;
chomp($pass);
# Looking for User with user/ uppercase /capitalise weak password
@mysqlstatlist =
select_array
"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE password = PASSWORD('"
. $pass
. "') OR password = PASSWORD(UPPER('"
. $pass
. "')) OR password = PASSWORD(UPPER(LEFT('"
. $pass
. "', 1)) + SUBSTRING('"
. $pass
. "', 2, LENGTH('"
. $pass . "')))";
debugprint "There is " . scalar(@mysqlstatlist) . " items.";
if (@mysqlstatlist) {
foreach my $line (@mysqlstatlist) {
chomp($line);
badprint "User '" . $line
. "' is using weak pasword: $pass in a lower, upper or capitalize derivated version.";
$nbins++;
}
}
}
}
if ( $nbins > 0 ) {
push( @generalrec, $nbins . " user(s) used basic or weaked password." );
}
}
sub get_replication_status {
prettyprint
"\n-------- Replication Metrics -------------------------------------------------";
if ( scalar( keys %myslaves ) == 0 ) {
infoprint "No replication slave(s) for this server.";
}
else {
infoprint "This server is acting as master for "
. scalar( keys %myslaves )
. " server(s).";
}
if ( scalar( keys %myrepl ) == 0 and scalar( keys %myslaves ) == 0 ) {
infoprint "This is a standalone server..";
return;
}
if ( scalar( keys %myrepl ) == 0 ) {
infoprint "No replication setup for this server.";
return;
}
my ($io_running) = $myrepl{'Slave_IO_Running'};
debugprint "IO RUNNING: $io_running ";
my ($sql_running) = $myrepl{'Slave_SQL_Running'};
debugprint "SQL RUNNING: $sql_running ";
my ($seconds_behind_master) = $myrepl{'Seconds_Behind_Master'};
debugprint "SECONDS : $seconds_behind_master ";
if ( defined($io_running)
and ( $io_running !~ /yes/i or $sql_running !~ /yes/i ) )
{
badprint
"This replication slave is not running but seems to be configurated.";
}
if ( defined($io_running)
&& $io_running =~ /yes/i
&& $sql_running =~ /yes/i )
{
if ( $myvar{'read_only'} eq 'OFF' ) {
badprint
"This replication slave is running with the read_only option disabled.";
}
else {
goodprint
"This replication slave is running with the read_only option enabled.";
}
if ( $seconds_behind_master > 0 ) {
badprint
"This replication slave is lagging and slave has $seconds_behind_master second(s) behind master host.";
}
else {
goodprint "This replication slave is uptodate with master.";
}
}
}
# Checks for supported or EOL'ed MySQL versions
my ( $mysqlvermajor, $mysqlverminor, $mysqlvermicro );
sub validate_mysql_version {
( $mysqlvermajor, $mysqlverminor, $mysqlvermicro ) =
$myvar{'version'} =~ /^(\d+)(?:\.(\d+)|)(?:\.(\d+)|)/;
$mysqlverminor ||= 0;
$mysqlvermicro ||= 0;
if ( !mysql_version_ge( 5, 1 ) ) {
badprint "Your MySQL version "
. $myvar{'version'}
. " is EOL software! Upgrade soon!";
}
elsif ( ( mysql_version_ge(6) and mysql_version_le(9) ) or mysql_version_ge(12) ) {
badprint "Currently running unsupported MySQL version "
. $myvar{'version'} . "";
} else {
goodprint "Currently running supported MySQL version "
. $myvar{'version'} . "";
}
}
# Checks if MySQL version is greater than equal to (major, minor, micro)
sub mysql_version_ge {
my ( $maj, $min, $mic ) = @_;
$min ||= 0;
$mic ||= 0;
return $mysqlvermajor > $maj
|| $mysqlvermajor == $maj
&& ( $mysqlverminor > $min
|| $mysqlverminor == $min && $mysqlvermicro >= $mic );
}
# Checks if MySQL version is lower than equal to (major, minor, micro)
sub mysql_version_le {
my ( $maj, $min, $mic ) = @_;
$min ||= 0;
$mic ||= 0;
return $mysqlvermajor < $maj
|| $mysqlvermajor == $maj
&& ( $mysqlverminor < $min
|| $mysqlverminor == $min && $mysqlvermicro <= $mic );
}
# Checks for 32-bit boxes with more than 2GB of RAM
my ($arch);
sub check_architecture {
if ( $doremote eq 1 ) { return; }
if ( `uname` =~ /SunOS/ && `isainfo -b` =~ /64/ ) {
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` !~ /SunOS/ && `uname -m` =~ /64/ ) {
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` =~ /AIX/ && `bootinfo -K` =~ /64/ ) {
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` =~ /NetBSD|OpenBSD/ && `sysctl -b hw.machine` =~ /64/ ) {
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` =~ /FreeBSD/ && `sysctl -b hw.machine_arch` =~ /64/ ) {
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` =~ /Darwin/ && `uname -m` =~ /Power Macintosh/ ) {
# Darwin box.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu1228.15.4~1/RELEASE_PPC Power Macintosh
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
elsif ( `uname` =~ /Darwin/ && `uname -m` =~ /x86_64/ ) {
# Darwin gibas.local 12.3.0 Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64 x86_64
$arch = 64;
goodprint "Operating on 64-bit architecture";
}
else {
$arch = 32;
if ( $physical_memory > 2147483648 ) {
badprint
"Switch to 64-bit OS - MySQL cannot currently use all of your RAM";
}
else {
goodprint
"Operating on 32-bit architecture with less than 2GB RAM";
}
}
$result{'OS'}{'Architecture'} = "$arch bits";
}
# Start up a ton of storage engine counts/statistics
my ( %enginestats, %enginecount, $fragtables );
sub check_storage_engines {
if ( $opt{skipsize} eq 1 ) {
prettyprint
"\n-------- Storage Engine Statistics -------------------------------------------";
infoprint "Skipped due to --skipsize option";
return;
}
prettyprint
"\n-------- Storage Engine Statistics -------------------------------------------";
my $engines;
if ( mysql_version_ge( 5, 1, 5 ) ) {
my @engineresults = select_array
"SELECT ENGINE,SUPPORT FROM information_schema.ENGINES WHERE ENGINE NOT IN ('performance_schema','MyISAM','MERGE','MEMORY') ORDER BY ENGINE ASC";
foreach my $line (@engineresults) {
my ( $engine, $engineenabled );
( $engine, $engineenabled ) = $line =~ /([a-zA-Z_]*)\s+([a-zA-Z]+)/;
$result{'Engine'}{$engine}{'Enabled'} = $engineenabled;
$engines .=
( $engineenabled eq "YES" || $engineenabled eq "DEFAULT" )
? greenwrap "+" . $engine . " "
: redwrap "-" . $engine . " ";
}
}
else {
$engines .=
( defined $myvar{'have_archive'} && $myvar{'have_archive'} eq "YES" )
? greenwrap "+Archive "
: redwrap "-Archive ";
$engines .=
( defined $myvar{'have_bdb'} && $myvar{'have_bdb'} eq "YES" )
? greenwrap "+BDB "
: redwrap "-BDB ";
$engines .=
( defined $myvar{'have_federated_engine'}
&& $myvar{'have_federated_engine'} eq "YES" )
? greenwrap "+Federated "
: redwrap "-Federated ";
$engines .=
( defined $myvar{'have_innodb'} && $myvar{'have_innodb'} eq "YES" )
? greenwrap "+InnoDB "
: redwrap "-InnoDB ";
$engines .=
( defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES" )
? greenwrap "+ISAM "
: redwrap "-ISAM ";
$engines .=
( defined $myvar{'have_aria'} && $myvar{'have_aria'} eq "YES" )
? greenwrap "+Aria "
: redwrap "-Aria ";
$engines .=
( defined $myvar{'have_ndbcluster'}
&& $myvar{'have_ndbcluster'} eq "YES" )
? greenwrap "+NDBCluster "
: redwrap "-NDBCluster ";
}
my @dblist = grep {$_ ne 'lost+found' } select_array "SHOW DATABASES";
$result{'Databases'}{'List'} = [@dblist];
infoprint "Status: $engines";
if ( mysql_version_ge( 5, 1, 5 ) ) {
# MySQL 5 servers can have table sizes calculated quickly from information schema
my @templist = select_array
"SELECT ENGINE,SUM(DATA_LENGTH+INDEX_LENGTH),COUNT(ENGINE),SUM(DATA_LENGTH),SUM(INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema', 'performance_schema', 'mysql') AND ENGINE IS NOT NULL GROUP BY ENGINE ORDER BY ENGINE ASC;";
my ( $engine, $size, $count, $dsize, $isize );
foreach my $line (@templist) {
( $engine, $size, $count, $dsize, $isize ) =
$line =~ /([a-zA-Z_]*)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/;
if ( !defined($size) ) { next; }
$enginestats{$engine} = $size;
$enginecount{$engine} = $count;
$result{'Engine'}{$engine}{'Table Number'} = $count;
$result{'Engine'}{$engine}{'Total Size'} = $size;
$result{'Engine'}{$engine}{'Data Size'} = $dsize;
$result{'Engine'}{$engine}{'Index Size'} = $isize;
}
$fragtables = select_one
"SELECT COUNT(TABLE_NAME) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema','performance_schema', 'mysql') AND Data_free > 0 AND NOT ENGINE='MEMORY'";
chomp($fragtables);
$result{'Tables'}{'Fragmented tables'} =
[ select_array
"SELECT CONCAT(CONCAT(TABLE_SCHEMA, '.'), TABLE_NAME) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema','performance_schema', 'mysql') AND Data_free > 0 AND NOT ENGINE='MEMORY'"
];
}
else {
# MySQL < 5 servers take a lot of work to get table sizes
my @tblist;
# Now we build a database list, and loop through it to get storage engine stats for tables
foreach my $db (@dblist) {
chomp($db);
if ( $db eq "information_schema"
or $db eq "performance_schema"
or $db eq "mysql"
or $db eq "lost+found" )
{
next;
}
my @ixs = ( 1, 6, 9 );
if ( !mysql_version_ge( 4, 1 ) ) {
# MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column
@ixs = ( 1, 5, 8 );
}
push( @tblist,
map { [ (split)[@ixs] ] }
select_array "SHOW TABLE STATUS FROM \\\`$db\\\`" );
}
# Parse through the table list to generate storage engine counts/statistics
$fragtables = 0;
foreach my $tbl (@tblist) {
debugprint "Data dump ". Dumper (@$tbl);
my ( $engine, $size, $datafree ) = @$tbl;
next if $engine eq 'NULL';
$size=0 if $size eq 'NULL';
$datafree=0 if $datafree eq 'NULL';
if ( defined $enginestats{$engine} ) {
$enginestats{$engine} += $size;
$enginecount{$engine} += 1;
}
else {
$enginestats{$engine} = $size;
$enginecount{$engine} = 1;
}
if ( $datafree > 0 ) {
$fragtables++;
}
}
}
while ( my ( $engine, $size ) = each(%enginestats) ) {
infoprint "Data in $engine tables: "
. hr_bytes_rnd($size)
. " (Tables: "
. $enginecount{$engine} . ")" . "";
}
# If the storage engine isn't being used, recommend it to be disabled
if ( !defined $enginestats{'InnoDB'}
&& defined $myvar{'have_innodb'}
&& $myvar{'have_innodb'} eq "YES" )
{
badprint "InnoDB is enabled but isn't being used";
push( @generalrec,
"Add skip-innodb to MySQL configuration to disable InnoDB" );
}
if ( !defined $enginestats{'BerkeleyDB'}
&& defined $myvar{'have_bdb'}
&& $myvar{'have_bdb'} eq "YES" )
{
badprint "BDB is enabled but isn't being used";
push( @generalrec,
"Add skip-bdb to MySQL configuration to disable BDB" );
}
if ( !defined $enginestats{'ISAM'}
&& defined $myvar{'have_isam'}
&& $myvar{'have_isam'} eq "YES" )
{
badprint "MYISAM is enabled but isn't being used";
push( @generalrec,
"Add skip-isam to MySQL configuration to disable ISAM (MySQL > 4.1.0)"
);
}
# Fragmented tables
if ( $fragtables > 0 ) {
badprint "Total fragmented tables: $fragtables";
push( @generalrec,
"Run OPTIMIZE TABLE to defragment tables for better performance" );
}
else {
goodprint "Total fragmented tables: $fragtables";
}
# Auto increments
my %tblist;
# Find the maximum integer
my $maxint = select_one "SELECT ~0";
$result{'MaxInt'} = $maxint;
# Now we use a database list, and loop through it to get storage engine stats for tables
foreach my $db (@dblist) {
chomp($db);
if ( !$tblist{$db} ) {
$tblist{$db} = ();
}
if ( $db eq "information_schema" ) { next; }
my @ia = ( 0, 10 );
if ( !mysql_version_ge( 4, 1 ) ) {
# MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column
@ia = ( 0, 9 );
}
push(
@{ $tblist{$db} },
map { [ (split)[@ia] ] }
select_array "SHOW TABLE STATUS FROM \\\`$db\\\`"
);
}
my @dbnames = keys %tblist;
foreach my $db (@dbnames) {
foreach my $tbl ( @{ $tblist{$db} } ) {
my ( $name, $autoincrement ) = @$tbl;
if ( $autoincrement =~ /^\d+?$/ ) {
my $percent = percentage( $autoincrement, $maxint );
$result{'PctAutoIncrement'}{"$db.$name"} = $percent;
if ( $percent >= 75 ) {
badprint
"Table '$db.$name' has an autoincrement value near max capacity ($percent%)";
}
}
}
}
}
my %mycalc;
sub calculations {
if ( $mystat{'Questions'} < 1 ) {
badprint
"Your server has not answered any queries - cannot continue...";
exit 2;
}
# Per-thread memory
if ( mysql_version_ge(4) ) {
$mycalc{'per_thread_buffers'} =
$myvar{'read_buffer_size'} +
$myvar{'read_rnd_buffer_size'} +
$myvar{'sort_buffer_size'} +
$myvar{'thread_stack'} +
$myvar{'join_buffer_size'};
}
else {
$mycalc{'per_thread_buffers'} =
$myvar{'record_buffer'} +
$myvar{'record_rnd_buffer'} +
$myvar{'sort_buffer'} +
$myvar{'thread_stack'} +
$myvar{'join_buffer_size'};
}
$mycalc{'total_per_thread_buffers'} =
$mycalc{'per_thread_buffers'} * $myvar{'max_connections'};
$mycalc{'max_total_per_thread_buffers'} =
$mycalc{'per_thread_buffers'} * $mystat{'Max_used_connections'};
# Server-wide memory
$mycalc{'max_tmp_table_size'} =
( $myvar{'tmp_table_size'} > $myvar{'max_heap_table_size'} )
? $myvar{'max_heap_table_size'}
: $myvar{'tmp_table_size'};
$mycalc{'server_buffers'} =
$myvar{'key_buffer_size'} + $mycalc{'max_tmp_table_size'};
$mycalc{'server_buffers'} +=
( defined $myvar{'innodb_buffer_pool_size'} )
? $myvar{'innodb_buffer_pool_size'}
: 0;
$mycalc{'server_buffers'} +=
( defined $myvar{'innodb_additional_mem_pool_size'} )
? $myvar{'innodb_additional_mem_pool_size'}
: 0;
$mycalc{'server_buffers'} +=
( defined $myvar{'innodb_log_buffer_size'} )
? $myvar{'innodb_log_buffer_size'}
: 0;
$mycalc{'server_buffers'} +=
( defined $myvar{'query_cache_size'} ) ? $myvar{'query_cache_size'} : 0;
$mycalc{'server_buffers'} +=
( defined $myvar{'aria_pagecache_buffer_size'} )
? $myvar{'aria_pagecache_buffer_size'}
: 0;
# Global memory
# Max used memory is memory used by MySQL based on Max_used_connections
# This is the max memory used theorically calculated with the max concurrent connection number reached by mysql
$mycalc{'max_used_memory'} =
$mycalc{'server_buffers'} + $mycalc{"max_total_per_thread_buffers"};
$mycalc{'pct_max_used_memory'} =
percentage( $mycalc{'max_used_memory'}, $physical_memory );
# Total possible memory is memory needed by MySQL based on max_connections
# This is the max memory MySQL can theorically used if all connections allowed has opened by mysql
$mycalc{'max_peak_memory'} =
$mycalc{'server_buffers'} + $mycalc{'total_per_thread_buffers'};
$mycalc{'pct_max_physical_memory'} =
percentage( $mycalc{'max_peak_memory'}, $physical_memory );
debugprint "Max Used Memory: "
. hr_bytes( $mycalc{'max_used_memory'} ) . "";
debugprint "Max Used Percentage RAM: "
. $mycalc{'pct_max_used_memory'} . "%";
debugprint "Max Peak Memory: "
. hr_bytes( $mycalc{'max_peak_memory'} ) . "";
debugprint "Max Peak Percentage RAM: "
. $mycalc{'pct_max_physical_memory'} . "%";
# Slow queries
$mycalc{'pct_slow_queries'} =
int( ( $mystat{'Slow_queries'} / $mystat{'Questions'} ) * 100 );
# Connections
$mycalc{'pct_connections_used'} = int(
( $mystat{'Max_used_connections'} / $myvar{'max_connections'} ) * 100 );
$mycalc{'pct_connections_used'} =
( $mycalc{'pct_connections_used'} > 100 )
? 100
: $mycalc{'pct_connections_used'};
# Aborted Connections
$mycalc{'pct_connections_aborted'} =
percentage( $mystat{'Aborted_connects'}, $mystat{'Connections'} );
debugprint "Aborted_connects: " . $mystat{'Aborted_connects'} . "";
debugprint "Connections: " . $mystat{'Connections'} . "";
debugprint "pct_connections_aborted: "
. $mycalc{'pct_connections_aborted'} . "";
# Key buffers
if ( mysql_version_ge( 4, 1 ) && $myvar{'key_buffer_size'} > 0 ) {
$mycalc{'pct_key_buffer_used'} = sprintf(
"%.1f",
(
1 - (
(
$mystat{'Key_blocks_unused'} *
$myvar{'key_cache_block_size'}
) / $myvar{'key_buffer_size'}
)
) * 100
);
}
else {
$mycalc{'pct_key_buffer_used'} = 0;
}
if ( $mystat{'Key_read_requests'} > 0 ) {
$mycalc{'pct_keys_from_mem'} = sprintf(
"%.1f",
(
100 - (
( $mystat{'Key_reads'} / $mystat{'Key_read_requests'} ) *
100
)
)
);
}
else {
$mycalc{'pct_keys_from_mem'} = 0;
}
if ( defined $mystat{'Aria_pagecache_read_requests'}
&& $mystat{'Aria_pagecache_read_requests'} > 0 )
{
$mycalc{'pct_aria_keys_from_mem'} = sprintf(
"%.1f",
(
100 - (
(
$mystat{'Aria_pagecache_reads'} /
$mystat{'Aria_pagecache_read_requests'}
) * 100
)
)
);
}
else {
$mycalc{'pct_aria_keys_from_mem'} = 0;
}
if ( $mystat{'Key_write_requests'} > 0 ) {
$mycalc{'pct_wkeys_from_mem'} = sprintf(
"%.1f",
(
100 - (
( $mystat{'Key_writes'} / $mystat{'Key_write_requests'} ) *
100
)
)
);
}
else {
$mycalc{'pct_wkeys_from_mem'} = 0;
}
if ( $doremote eq 0 and !mysql_version_ge(5) ) {
my $size = 0;
$size += (split)[0]
for
`find $myvar{'datadir'} -name "*.MYI" 2>&1 | xargs du -L $duflags 2>&1`;
$mycalc{'total_myisam_indexes'} = $size;
$mycalc{'total_aria_indexes'} = 0;
}
elsif ( mysql_version_ge(5) ) {
$mycalc{'total_myisam_indexes'} = select_one
"SELECT IFNULL(SUM(INDEX_LENGTH),0) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema') AND ENGINE = 'MyISAM';";
$mycalc{'total_aria_indexes'} = select_one
"SELECT IFNULL(SUM(INDEX_LENGTH),0) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema') AND ENGINE = 'Aria';";
}
if ( defined $mycalc{'total_myisam_indexes'}
and $mycalc{'total_myisam_indexes'} == 0 )
{
$mycalc{'total_myisam_indexes'} = "fail";
}
elsif ( defined $mycalc{'total_myisam_indexes'} ) {
chomp( $mycalc{'total_myisam_indexes'} );
}
if ( defined $mycalc{'total_aria_indexes'}
and $mycalc{'total_aria_indexes'} == 0 )
{
$mycalc{'total_aria_indexes'} = "fail";
}
elsif ( defined $mycalc{'total_aria_indexes'} ) {
chomp( $mycalc{'total_aria_indexes'} );
}
# Query cache
if ( mysql_version_ge(4) ) {
$mycalc{'query_cache_efficiency'} = sprintf(
"%.1f",
(
$mystat{'Qcache_hits'} /
( $mystat{'Com_select'} + $mystat{'Qcache_hits'} )
) * 100
);
if ( $myvar{'query_cache_size'} ) {
$mycalc{'pct_query_cache_used'} = sprintf(
"%.1f",
100 - (
$mystat{'Qcache_free_memory'} / $myvar{'query_cache_size'}
) * 100
);
}
if ( $mystat{'Qcache_lowmem_prunes'} == 0 ) {
$mycalc{'query_cache_prunes_per_day'} = 0;
}
else {
$mycalc{'query_cache_prunes_per_day'} = int(
$mystat{'Qcache_lowmem_prunes'} / ( $mystat{'Uptime'} / 86400 )
);
}
}
# Sorting
$mycalc{'total_sorts'} = $mystat{'Sort_scan'} + $mystat{'Sort_range'};
if ( $mycalc{'total_sorts'} > 0 ) {
$mycalc{'pct_temp_sort_table'} = int(
( $mystat{'Sort_merge_passes'} / $mycalc{'total_sorts'} ) * 100 );
}
# Joins
$mycalc{'joins_without_indexes'} =
$mystat{'Select_range_check'} + $mystat{'Select_full_join'};
$mycalc{'joins_without_indexes_per_day'} =
int( $mycalc{'joins_without_indexes'} / ( $mystat{'Uptime'} / 86400 ) );
# Temporary tables
if ( $mystat{'Created_tmp_tables'} > 0 ) {
if ( $mystat{'Created_tmp_disk_tables'} > 0 ) {
$mycalc{'pct_temp_disk'} = int(
(
$mystat{'Created_tmp_disk_tables'} /
$mystat{'Created_tmp_tables'}
) * 100
);
}
else {
$mycalc{'pct_temp_disk'} = 0;
}
}
# Table cache
if ( $mystat{'Opened_tables'} > 0 ) {
$mycalc{'table_cache_hit_rate'} =
int( $mystat{'Open_tables'} * 100 / $mystat{'Opened_tables'} );
}
else {
$mycalc{'table_cache_hit_rate'} = 100;
}
# Open files
if ( $myvar{'open_files_limit'} > 0 ) {
$mycalc{'pct_files_open'} =
int( $mystat{'Open_files'} * 100 / $myvar{'open_files_limit'} );
}
# Table locks
if ( $mystat{'Table_locks_immediate'} > 0 ) {
if ( $mystat{'Table_locks_waited'} == 0 ) {
$mycalc{'pct_table_locks_immediate'} = 100;
}
else {
$mycalc{'pct_table_locks_immediate'} = int(
$mystat{'Table_locks_immediate'} * 100 / (
$mystat{'Table_locks_waited'} +
$mystat{'Table_locks_immediate'}
)
);
}
}
# Thread cache
$mycalc{'thread_cache_hit_rate'} =
int( 100 -
( ( $mystat{'Threads_created'} / $mystat{'Connections'} ) * 100 ) );
# Other
if ( $mystat{'Connections'} > 0 ) {
$mycalc{'pct_aborted_connections'} =
int( ( $mystat{'Aborted_connects'} / $mystat{'Connections'} ) * 100 );
}
if ( $mystat{'Questions'} > 0 ) {
$mycalc{'total_reads'} = $mystat{'Com_select'};
$mycalc{'total_writes'} =
$mystat{'Com_delete'} +
$mystat{'Com_insert'} +
$mystat{'Com_update'} +
$mystat{'Com_replace'};
if ( $mycalc{'total_reads'} == 0 ) {
$mycalc{'pct_reads'} = 0;
$mycalc{'pct_writes'} = 100;
}
else {
$mycalc{'pct_reads'} = int(
(
$mycalc{'total_reads'} /
( $mycalc{'total_reads'} + $mycalc{'total_writes'} )
) * 100
);
$mycalc{'pct_writes'} = 100 - $mycalc{'pct_reads'};
}
}
# InnoDB
if ( $myvar{'have_innodb'} eq "YES" ) {
$mycalc{'innodb_log_size_pct'} =
( $myvar{'innodb_log_file_size'} * 100 /
$myvar{'innodb_buffer_pool_size'} );
}
(
$mystat{'Innodb_buffer_pool_read_requests'},
$mystat{'Innodb_buffer_pool_reads'}
)
= ( 1, 1 )
unless defined $mystat{'Innodb_buffer_pool_reads'};
$mycalc{'pct_read_efficiency'} = percentage(
(
$mystat{'Innodb_buffer_pool_read_requests'} -
$mystat{'Innodb_buffer_pool_reads'}
),
$mystat{'Innodb_buffer_pool_read_requests'}
) if defined $mystat{'Innodb_buffer_pool_read_requests'};
debugprint "pct_read_efficiency: " . $mycalc{'pct_read_efficiency'} . "";
debugprint "Innodb_buffer_pool_reads: "
. $mystat{'Innodb_buffer_pool_reads'} . "";
debugprint "Innodb_buffer_pool_read_requests: "
. $mystat{'Innodb_buffer_pool_read_requests'} . "";
(
$mystat{'Innodb_buffer_pool_write_requests'},
$mystat{'Innodb_buffer_pool_writes'}
)
= ( 1, 1 )
unless defined $mystat{'Innodb_buffer_pool_writes'};
$mycalc{'pct_write_efficiency'} = percentage(
(
$mystat{'Innodb_buffer_pool_write_requests'} -
$mystat{'Innodb_buffer_pool_writes'}
),
$mystat{'Innodb_buffer_pool_write_requests'}
) if defined $mystat{'Innodb_buffer_pool_write_requests'};
debugprint "pct_write_efficiency: " . $mycalc{'pct_read_efficiency'} . "";
debugprint "Innodb_buffer_pool_writes: "
. $mystat{'Innodb_buffer_pool_writes'} . "";
debugprint "Innodb_buffer_pool_write_requests: "
. $mystat{'Innodb_buffer_pool_write_requests'} . "";
$mycalc{'pct_innodb_buffer_used'} = percentage(
(
$mystat{'Innodb_buffer_pool_pages_total'} -
$mystat{'Innodb_buffer_pool_pages_free'}
),
$mystat{'Innodb_buffer_pool_pages_total'}
) if defined $mystat{'Innodb_buffer_pool_pages_total'};
# Binlog Cache
if ( $myvar{'log_bin'} ne 'OFF' ) {
$mycalc{'pct_binlog_cache'} = percentage(
$mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'},
$mystat{'Binlog_cache_use'} );
}
}
sub mysql_stats {
prettyprint
"\n-------- Performance Metrics -------------------------------------------------";
# Show uptime, queries per second, connections, traffic stats
my $qps;
if ( $mystat{'Uptime'} > 0 ) {
$qps = sprintf( "%.3f", $mystat{'Questions'} / $mystat{'Uptime'} );
}
push( @generalrec,
"MySQL started within last 24 hours - recommendations may be inaccurate"
) if ( $mystat{'Uptime'} < 86400 );
infoprint "Up for: "
. pretty_uptime( $mystat{'Uptime'} ) . " ("
. hr_num( $mystat{'Questions'} ) . " q ["
. hr_num($qps)
. " qps], "
. hr_num( $mystat{'Connections'} )
. " conn," . " TX: "
. hr_num( $mystat{'Bytes_sent'} )
. ", RX: "
. hr_num( $mystat{'Bytes_received'} ) . ")";
infoprint "Reads / Writes: "
. $mycalc{'pct_reads'} . "% / "
. $mycalc{'pct_writes'} . "%";
# Binlog Cache
if ( $myvar{'log_bin'} eq 'OFF' ) {
infoprint "Binary logging is disabled";
}
else {
infoprint "Binary logging is enabled (GTID MODE: "
. ( defined( $myvar{'gtid_mode'} ) ? $myvar{'gtid_mode'} : "OFF" )
. ")";
}
# Memory usage
infoprint "Total buffers: "
. hr_bytes( $mycalc{'server_buffers'} )
. " global + "
. hr_bytes( $mycalc{'per_thread_buffers'} )
. " per thread ($myvar{'max_connections'} max threads)";
if ( $opt{buffers} ne 0 ) {
infoprint "Global Buffers";
infoprint " +-- Key Buffer: "
. hr_bytes( $myvar{'key_buffer_size'} ) . "";
infoprint " +-- Max Tmp Table: "
. hr_bytes( $mycalc{'max_tmp_table_size'} ) . "";
if ( defined $myvar{'query_cache_type'} ) {
infoprint "Query Cache Buffers";
infoprint " +-- Query Cache: "
. $myvar{'query_cache_type'} . " - "
. (
$myvar{'query_cache_type'} eq 0 |
$myvar{'query_cache_type'} eq 'OFF' ? "DISABLED"
: ( $myvar{'query_cache_type'} eq 1 ? "ALL REQUESTS"
: "ON DEMAND" )
) . "";
infoprint " +-- Query Cache Size: "
. hr_bytes( $myvar{'query_cache_size'} ) . "";
}
infoprint "Per Thread Buffers";
infoprint " +-- Read Buffer: "
. hr_bytes( $myvar{'read_buffer_size'} ) . "";
infoprint " +-- Read RND Buffer: "
. hr_bytes( $myvar{'read_rnd_buffer_size'} ) . "";
infoprint " +-- Sort Buffer: "
. hr_bytes( $myvar{'sort_buffer_size'} ) . "";
infoprint " +-- Thread stack: "
. hr_bytes( $myvar{'thread_stack'} ) . "";
infoprint " +-- Join Buffer: "
. hr_bytes( $myvar{'join_buffer_size'} ) . "";
if ( $myvar{'log_bin'} ne 'OFF' ) {
infoprint "Binlog Cache Buffers";
infoprint " +-- Binlog Cache: "
. hr_bytes( $myvar{'binlog_cache_size'} ) . "";
}
}
if ( $arch
&& $arch == 32
&& $mycalc{'max_used_memory'} > 2 * 1024 * 1024 * 1024 )
{
badprint
"Allocating > 2GB RAM on 32-bit systems can cause system instability";
badprint "Maximum reached memory usage: "
. hr_bytes( $mycalc{'max_used_memory'} )
. " ($mycalc{'pct_max_used_memory'}% of installed RAM)";
}
elsif ( $mycalc{'pct_max_used_memory'} > 85 ) {
badprint "Maximum reached memory usage: "
. hr_bytes( $mycalc{'max_used_memory'} )
. " ($mycalc{'pct_max_used_memory'}% of installed RAM)";
}
else {
goodprint "Maximum reached memory usage: "
. hr_bytes( $mycalc{'max_used_memory'} )
. " ($mycalc{'pct_max_used_memory'}% of installed RAM)";
}
if ( $mycalc{'pct_max_physical_memory'} > 85 ) {
badprint "Maximum possible memory usage: "
. hr_bytes( $mycalc{'max_peak_memory'} )
. " ($mycalc{'pct_max_physical_memory'}% of installed RAM)";
push( @generalrec,
"Reduce your overall MySQL memory footprint for system stability" );
}
else {
goodprint "Maximum possible memory usage: "
. hr_bytes( $mycalc{'max_peak_memory'} )
. " ($mycalc{'pct_max_physical_memory'}% of installed RAM)";
}
# Slow queries
if ( $mycalc{'pct_slow_queries'} > 5 ) {
badprint "Slow queries: $mycalc{'pct_slow_queries'}% ("
. hr_num( $mystat{'Slow_queries'} ) . "/"
. hr_num( $mystat{'Questions'} ) . ")";
}
else {
goodprint "Slow queries: $mycalc{'pct_slow_queries'}% ("
. hr_num( $mystat{'Slow_queries'} ) . "/"
. hr_num( $mystat{'Questions'} ) . ")";
}
if ( $myvar{'long_query_time'} > 10 ) {
push( @adjvars, "long_query_time (<= 10)" );
}
if ( defined( $myvar{'log_slow_queries'} ) ) {
if ( $myvar{'log_slow_queries'} eq "OFF" ) {
push( @generalrec,
"Enable the slow query log to troubleshoot bad queries" );
}
}
# Connections
if ( $mycalc{'pct_connections_used'} > 85 ) {
badprint
"Highest connection usage: $mycalc{'pct_connections_used'}% ($mystat{'Max_used_connections'}/$myvar{'max_connections'})";
push( @adjvars,
"max_connections (> " . $myvar{'max_connections'} . ")" );
push( @adjvars,
"wait_timeout (< " . $myvar{'wait_timeout'} . ")",
"interactive_timeout (< " . $myvar{'interactive_timeout'} . ")" );
push( @generalrec,
"Reduce or eliminate persistent connections to reduce connection usage"
);
}
else {
goodprint
"Highest usage of available connections: $mycalc{'pct_connections_used'}% ($mystat{'Max_used_connections'}/$myvar{'max_connections'})";
}
# Aborted Connections
if ( $mycalc{'pct_connections_aborted'} > 3 ) {
badprint
"Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})";
push( @generalrec,
"Reduce or eliminate unclosed connections and network issues" );
}
else {
goodprint
"Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})";
}
# Query cache
if ( !mysql_version_ge(4) ) {
# MySQL versions < 4.01 don't support query caching
push( @generalrec,
"Upgrade MySQL to version 4+ to utilize query caching" );
}
elsif ( $myvar{'query_cache_size'} < 1 ) {
badprint "Query cache is disabled";
push( @adjvars, "query_cache_size (>= 8M)" );
}
elsif ( $myvar{'query_cache_type'} eq "OFF" ) {
badprint "Query cache is disabled";
push( @adjvars, "query_cache_type (=1)" );
}
elsif ( $mystat{'Com_select'} == 0 ) {
badprint
"Query cache cannot be analyzed - no SELECT statements executed";
}
else {
if ( $mycalc{'query_cache_efficiency'} < 20 ) {
badprint
"Query cache efficiency: $mycalc{'query_cache_efficiency'}% ("
. hr_num( $mystat{'Qcache_hits'} )
. " cached / "
. hr_num( $mystat{'Qcache_hits'} + $mystat{'Com_select'} )
. " selects)";
push( @adjvars,
"query_cache_limit (> "
. hr_bytes_rnd( $myvar{'query_cache_limit'} )
. ", or use smaller result sets)" );
}
else {
goodprint
"Query cache efficiency: $mycalc{'query_cache_efficiency'}% ("
. hr_num( $mystat{'Qcache_hits'} )
. " cached / "
. hr_num( $mystat{'Qcache_hits'} + $mystat{'Com_select'} )
. " selects)";
}
if ( $mycalc{'query_cache_prunes_per_day'} > 98 ) {
badprint
"Query cache prunes per day: $mycalc{'query_cache_prunes_per_day'}";
if ( $myvar{'query_cache_size'} >= 128 * 1024 * 1024 ) {
push( @generalrec,
"Increasing the query_cache size over 128M may reduce performance"
);
push( @adjvars,
"query_cache_size (> "
. hr_bytes_rnd( $myvar{'query_cache_size'} )
. ") [see warning above]" );
}
else {
push( @adjvars,
"query_cache_size (> "
. hr_bytes_rnd( $myvar{'query_cache_size'} )
. ")" );
}
}
else {
goodprint
"Query cache prunes per day: $mycalc{'query_cache_prunes_per_day'}";
}
}
# Sorting
if ( $mycalc{'total_sorts'} == 0 ) {
# For the sake of space, we will be quiet here
# No sorts have run yet
}
elsif ( $mycalc{'pct_temp_sort_table'} > 10 ) {
badprint
"Sorts requiring temporary tables: $mycalc{'pct_temp_sort_table'}% ("
. hr_num( $mystat{'Sort_merge_passes'} )
. " temp sorts / "
. hr_num( $mycalc{'total_sorts'} )
. " sorts)";
push( @adjvars,
"sort_buffer_size (> "
. hr_bytes_rnd( $myvar{'sort_buffer_size'} )
. ")" );
push( @adjvars,
"read_rnd_buffer_size (> "
. hr_bytes_rnd( $myvar{'read_rnd_buffer_size'} )
. ")" );
}
else {
goodprint
"Sorts requiring temporary tables: $mycalc{'pct_temp_sort_table'}% ("
. hr_num( $mystat{'Sort_merge_passes'} )
. " temp sorts / "
. hr_num( $mycalc{'total_sorts'} )
. " sorts)";
}
# Joins
if ( $mycalc{'joins_without_indexes_per_day'} > 250 ) {
badprint
"Joins performed without indexes: $mycalc{'joins_without_indexes'}";
push( @adjvars,
"join_buffer_size (> "
. hr_bytes( $myvar{'join_buffer_size'} )
. ", or always use indexes with joins)" );
push( @generalrec,
"Adjust your join queries to always utilize indexes" );
}
else {
# For the sake of space, we will be quiet here
# No joins have run without indexes
}
# Temporary tables
if ( $mystat{'Created_tmp_tables'} > 0 ) {
if ( $mycalc{'pct_temp_disk'} > 25
&& $mycalc{'max_tmp_table_size'} < 256 * 1024 * 1024 )
{
badprint
"Temporary tables created on disk: $mycalc{'pct_temp_disk'}% ("
. hr_num( $mystat{'Created_tmp_disk_tables'} )
. " on disk / "
. hr_num( $mystat{'Created_tmp_tables'} )
. " total)";
push( @adjvars,
"tmp_table_size (> "
. hr_bytes_rnd( $myvar{'tmp_table_size'} )
. ")" );
push( @adjvars,
"max_heap_table_size (> "
. hr_bytes_rnd( $myvar{'max_heap_table_size'} )
. ")" );
push( @generalrec,
"When making adjustments, make tmp_table_size/max_heap_table_size equal"
);
push( @generalrec,
"Reduce your SELECT DISTINCT queries which have no LIMIT clause" );
}
elsif ($mycalc{'pct_temp_disk'} > 25
&& $mycalc{'max_tmp_table_size'} >= 256 * 1024 * 1024 )
{
badprint
"Temporary tables created on disk: $mycalc{'pct_temp_disk'}% ("
. hr_num( $mystat{'Created_tmp_disk_tables'} )
. " on disk / "
. hr_num( $mystat{'Created_tmp_tables'} )
. " total)";
push( @generalrec,
"Temporary table size is already large - reduce result set size"
);
push( @generalrec,
"Reduce your SELECT DISTINCT queries without LIMIT clauses" );
}
else {
goodprint
"Temporary tables created on disk: $mycalc{'pct_temp_disk'}% ("
. hr_num( $mystat{'Created_tmp_disk_tables'} )
. " on disk / "
. hr_num( $mystat{'Created_tmp_tables'} )
. " total)";
}
}
else {
# For the sake of space, we will be quiet here
# No temporary tables have been created
}
# Thread cache
if ( $myvar{'thread_cache_size'} eq 0 ) {
badprint "Thread cache is disabled";
push( @generalrec, "Set thread_cache_size to 4 as a starting value" );
push( @adjvars, "thread_cache_size (start at 4)" );
}
else {
if ( $mycalc{'thread_cache_hit_rate'} <= 50 ) {
badprint
"Thread cache hit rate: $mycalc{'thread_cache_hit_rate'}% ("
. hr_num( $mystat{'Threads_created'} )
. " created / "
. hr_num( $mystat{'Connections'} )
. " connections)";
push( @adjvars,
"thread_cache_size (> $myvar{'thread_cache_size'})" );
}
else {
goodprint
"Thread cache hit rate: $mycalc{'thread_cache_hit_rate'}% ("
. hr_num( $mystat{'Threads_created'} )
. " created / "
. hr_num( $mystat{'Connections'} )
. " connections)";
}
}
# Table cache
my $table_cache_var = "";
if ( $mystat{'Open_tables'} > 0 ) {
if ( $mycalc{'table_cache_hit_rate'} < 20 ) {
badprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% ("
. hr_num( $mystat{'Open_tables'} )
. " open / "
. hr_num( $mystat{'Opened_tables'} )
. " opened)";
if ( mysql_version_ge( 5, 1 ) ) {
$table_cache_var = "table_open_cache";
}
else {
$table_cache_var = "table_cache";
}
push( @adjvars,
$table_cache_var . " (> " . $myvar{$table_cache_var} . ")" );
push( @generalrec,
"Increase "
. $table_cache_var
. " gradually to avoid file descriptor limits" );
push( @generalrec,
"Read this before increasing "
. $table_cache_var
. " over 64: http://bit.ly/1mi7c4C" );
push( @generalrec,
"Beware that open_files_limit ("
. $myvar{'open_files_limit'}
. ") variable " );
push( @generalrec,
"should be greater than $table_cache_var ( "
. $myvar{$table_cache_var}
. ")" );
}
else {
goodprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% ("
. hr_num( $mystat{'Open_tables'} )
. " open / "
. hr_num( $mystat{'Opened_tables'} )
. " opened)";
}
}
# Open files
if ( defined $mycalc{'pct_files_open'} ) {
if ( $mycalc{'pct_files_open'} > 85 ) {
badprint "Open file limit used: $mycalc{'pct_files_open'}% ("
. hr_num( $mystat{'Open_files'} ) . "/"
. hr_num( $myvar{'open_files_limit'} ) . ")";
push( @adjvars,
"open_files_limit (> " . $myvar{'open_files_limit'} . ")" );
}
else {
goodprint "Open file limit used: $mycalc{'pct_files_open'}% ("
. hr_num( $mystat{'Open_files'} ) . "/"
. hr_num( $myvar{'open_files_limit'} ) . ")";
}
}
# Table locks
if ( defined $mycalc{'pct_table_locks_immediate'} ) {
if ( $mycalc{'pct_table_locks_immediate'} < 95 ) {
badprint
"Table locks acquired immediately: $mycalc{'pct_table_locks_immediate'}%";
push( @generalrec,
"Optimize queries and/or use InnoDB to reduce lock wait" );
}
else {
goodprint
"Table locks acquired immediately: $mycalc{'pct_table_locks_immediate'}% ("
. hr_num( $mystat{'Table_locks_immediate'} )
. " immediate / "
. hr_num( $mystat{'Table_locks_waited'} +
$mystat{'Table_locks_immediate'} )
. " locks)";
}
}
# Binlog cache
if ( defined $mycalc{'pct_binlog_cache'} ) {
if ( $mycalc{'pct_binlog_cache'} < 90
&& $mystat{'Binlog_cache_use'} > 0 )
{
badprint "Binlog cache memory access: "
. $mycalc{'pct_binlog_cache'} . "% ( "
. (
$mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'} )
. " Memory / "
. $mystat{'Binlog_cache_use'}
. " Total)";
push( @generalrec,
"Increase binlog_cache_size (Actual value: "
. $myvar{'binlog_cache_size'}
. ") " );
push( @adjvars,
"binlog_cache_size ("
. hr_bytes( $myvar{'binlog_cache_size'} + 16 * 1024 * 1024 )
. " ) " );
}
else {
goodprint "Binlog cache memory access: "
. $mycalc{'pct_binlog_cache'} . "% ( "
. (
$mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'} )
. " Memory / "
. $mystat{'Binlog_cache_use'}
. " Total)";
debugprint "Not enought data to validate binlog cache size\n"
if $mystat{'Binlog_cache_use'} < 10;
}
}
# Performance options
if ( !mysql_version_ge( 5, 1 ) ) {
push( @generalrec, "Upgrade to MySQL 5.5+ to use asynchrone write" );
}
elsif ( $myvar{'concurrent_insert'} eq "OFF" ) {
push( @generalrec, "Enable concurrent_insert by setting it to 'ON'" );
}
elsif ( $myvar{'concurrent_insert'} eq 0 ) {
push( @generalrec, "Enable concurrent_insert by setting it to 1" );
}
}
# Recommandations for MyISAM
sub mysql_myisam {
prettyprint
"\n-------- MyISAM Metrics -----------------------------------------------------";
# AriaDB
# Key buffer usage
if ( defined( $mycalc{'pct_key_buffer_used'} ) ) {
if ( $mycalc{'pct_key_buffer_used'} < 90 ) {
badprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% ("
. hr_num( $myvar{'key_buffer_size'} *
$mycalc{'pct_key_buffer_used'} /
100 )
. " used / "
. hr_num( $myvar{'key_buffer_size'} )
. " cache)";
#push(@adjvars,"key_buffer_size (\~ ".hr_num( $myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100).")");
}
else {
goodprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% ("
. hr_num( $myvar{'key_buffer_size'} *
$mycalc{'pct_key_buffer_used'} /
100 )
. " used / "
. hr_num( $myvar{'key_buffer_size'} )
. " cache)";
}
}
else {
# No queries have run that would use keys
debugprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% ("
. hr_num(
$myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100 )
. " used / "
. hr_num( $myvar{'key_buffer_size'} )
. " cache)";
}
# Key buffer
if ( !defined( $mycalc{'total_myisam_indexes'} ) and $doremote == 1 ) {
push( @generalrec,
"Unable to calculate MyISAM indexes on remote MySQL server < 5.0.0"
);
}
elsif ( $mycalc{'total_myisam_indexes'} =~ /^fail$/ ) {
badprint
"Cannot calculate MyISAM index size - re-run script as root user";
}
elsif ( $mycalc{'total_myisam_indexes'} == "0" ) {
badprint
"None of your MyISAM tables are indexed - add indexes immediately";
}
else {
if ( $myvar{'key_buffer_size'} < $mycalc{'total_myisam_indexes'}
&& $mycalc{'pct_keys_from_mem'} < 95 )
{
badprint "Key buffer size / total MyISAM indexes: "
. hr_bytes( $myvar{'key_buffer_size'} ) . "/"
. hr_bytes( $mycalc{'total_myisam_indexes'} ) . "";
push( @adjvars,
"key_buffer_size (> "
. hr_bytes( $mycalc{'total_myisam_indexes'} )
. ")" );
}
else {
goodprint "Key buffer size / total MyISAM indexes: "
. hr_bytes( $myvar{'key_buffer_size'} ) . "/"
. hr_bytes( $mycalc{'total_myisam_indexes'} ) . "";
}
if ( $mystat{'Key_read_requests'} > 0 ) {
if ( $mycalc{'pct_keys_from_mem'} < 95 ) {
badprint
"Read Key buffer hit rate: $mycalc{'pct_keys_from_mem'}% ("
. hr_num( $mystat{'Key_read_requests'} )
. " cached / "
. hr_num( $mystat{'Key_reads'} )
. " reads)";
}
else {
goodprint
"Read Key buffer hit rate: $mycalc{'pct_keys_from_mem'}% ("
. hr_num( $mystat{'Key_read_requests'} )
. " cached / "
. hr_num( $mystat{'Key_reads'} )
. " reads)";
}
}
else {
# No queries have run that would use keys
debugprint "Key buffer size / total MyISAM indexes: "
. hr_bytes( $myvar{'key_buffer_size'} ) . "/"
. hr_bytes( $mycalc{'total_myisam_indexes'} ) . "";
}
if ( $mystat{'Key_write_requests'} > 0 ) {
if ( $mycalc{'pct_wkeys_from_mem'} < 95 ) {
badprint
"Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% ("
. hr_num( $mystat{'Key_write_requests'} )
. " cached / "
. hr_num( $mystat{'Key_writes'} )
. " writes)";
}
else {
goodprint
"Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% ("
. hr_num( $mystat{'Key_write_requests'} )
. " cached / "
. hr_num( $mystat{'Key_writes'} )
. " writes)";
}
}
else {
# No queries have run that would use keys
debugprint
"Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% ("
. hr_num( $mystat{'Key_write_requests'} )
. " cached / "
. hr_num( $mystat{'Key_writes'} )
. " writes)";
}
}
}
# Recommandations for Ariadb
sub mysql_ariadb {
prettyprint
"\n-------- AriaDB Metrics -----------------------------------------------------";
# AriaDB
unless ( defined $myvar{'have_aria'}
&& $myvar{'have_aria'} eq "YES"
&& defined $enginestats{'Aria'} )
{
infoprint "AriaDB is disabled.";
return;
}
infoprint "AriaDB is enabled.";
# Aria pagecache
if ( !defined( $mycalc{'total_aria_indexes'} ) and $doremote == 1 ) {
push( @generalrec,
"Unable to calculate Aria indexes on remote MySQL server < 5.0.0" );
}
elsif ( $mycalc{'total_aria_indexes'} =~ /^fail$/ ) {
badprint
"Cannot calculate Aria index size - re-run script as root user";
}
elsif ( $mycalc{'total_aria_indexes'} == "0" ) {
badprint
"None of your Aria tables are indexed - add indexes immediately";
}
else {
if (
$myvar{'aria_pagecache_buffer_size'} < $mycalc{'total_aria_indexes'}
&& $mycalc{'pct_aria_keys_from_mem'} < 95 )
{
badprint "Aria pagecache size / total Aria indexes: "
. hr_bytes( $myvar{'aria_pagecache_buffer_size'} ) . "/"
. hr_bytes( $mycalc{'total_aria_indexes'} ) . "";
push( @adjvars,
"aria_pagecache_buffer_size (> "
. hr_bytes( $mycalc{'total_aria_indexes'} )
. ")" );
}
else {
goodprint "Aria pagecache size / total Aria indexes: "
. hr_bytes( $myvar{'aria_pagecache_buffer_size'} ) . "/"
. hr_bytes( $mycalc{'total_aria_indexes'} ) . "";
}
if ( $mystat{'Aria_pagecache_read_requests'} > 0 ) {
if ( $mycalc{'pct_aria_keys_from_mem'} < 95 ) {
badprint
"Aria pagecache hit rate: $mycalc{'pct_aria_keys_from_mem'}% ("
. hr_num( $mystat{'Aria_pagecache_read_requests'} )
. " cached / "
. hr_num( $mystat{'Aria_pagecache_reads'} )
. " reads)";
}
else {
goodprint
"Aria pagecache hit rate: $mycalc{'pct_aria_keys_from_mem'}% ("
. hr_num( $mystat{'Aria_pagecache_read_requests'} )
. " cached / "
. hr_num( $mystat{'Aria_pagecache_reads'} )
. " reads)";
}
}
else {
# No queries have run that would use keys
}
}
}
# Recommandations for Innodb
sub mysql_innodb {
prettyprint
"\n-------- InnoDB Metrics -----------------------------------------------------";
# InnoDB
unless ( defined $myvar{'have_innodb'}
&& $myvar{'have_innodb'} eq "YES"
&& defined $enginestats{'InnoDB'} )
{
infoprint "InnoDB is disabled.";
if ( mysql_version_ge( 5, 5 ) ) {
badprint
"InnoDB Storage engine is disabled. InnoDB is the default storage engine";
}
return;
}
infoprint "InnoDB is enabled.";
if ( $opt{buffers} ne 0 ) {
infoprint "InnoDB Buffers";
if ( defined $myvar{'innodb_buffer_pool_size'} ) {
infoprint " +-- InnoDB Buffer Pool: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "";
}
if ( defined $myvar{'innodb_buffer_pool_instances'} ) {
infoprint " +-- InnoDB Buffer Pool Instances: "
. $myvar{'innodb_buffer_pool_instances'} . "";
}
if ( defined $myvar{'innodb_additional_mem_pool_size'} ) {
infoprint " +-- InnoDB Additional Mem Pool: "
. hr_bytes( $myvar{'innodb_additional_mem_pool_size'} ) . "";
}
if ( defined $myvar{'innodb_log_buffer_size'} ) {
infoprint " +-- InnoDB Log Buffer: "
. hr_bytes( $myvar{'innodb_log_buffer_size'} ) . "";
}
if ( defined $mystat{'Innodb_buffer_pool_pages_free'} ) {
infoprint " +-- InnoDB Log Buffer Free: "
. hr_bytes( $mystat{'Innodb_buffer_pool_pages_free'} ) . "";
}
if ( defined $mystat{'Innodb_buffer_pool_pages_total'} ) {
infoprint " +-- InnoDB Log Buffer Used: "
. hr_bytes( $mystat{'Innodb_buffer_pool_pages_total'} ) . "";
}
}
# InnoDB Buffer Pull Size
if ( $myvar{'innodb_buffer_pool_size'} > $enginestats{'InnoDB'} ) {
goodprint "InnoDB buffer pool / data size: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "/"
. hr_bytes( $enginestats{'InnoDB'} ) . "";
}
else {
badprint "InnoDB buffer pool / data size: "
. hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "/"
. hr_bytes( $enginestats{'InnoDB'} ) . "";
push( @adjvars,
"innodb_buffer_pool_size (>= "
. hr_bytes_rnd( $enginestats{'InnoDB'} )
. ") if possible." );
}
# InnoDB Buffer Pull Instances (MySQL 5.6.6+)
if ( defined( $myvar{'innodb_buffer_pool_instances'} ) ) {
# Bad Value if > 64
if ( $myvar{'innodb_buffer_pool_instances'} > 64 ) {
badprint "InnoDB buffer pool instances: "
. $myvar{'innodb_buffer_pool_instances'} . "";
push( @adjvars, "innodb_buffer_pool_instances (<= 64)" );
}
# InnoDB Buffer Pull Size > 1Go
if ( $myvar{'innodb_buffer_pool_size'} > 1024 * 1024 * 1024 ) {
# InnoDB Buffer Pull Size / 1Go = InnoDB Buffer Pull Instances limited to 64 max.
# InnoDB Buffer Pull Size > 64Go
my $max_innodb_buffer_pool_instances =
int( $myvar{'innodb_buffer_pool_size'} / ( 1024 * 1024 * 1024 ) );
$max_innodb_buffer_pool_instances = 64
if ( $max_innodb_buffer_pool_instances > 64 );
if ( $myvar{'innodb_buffer_pool_instances'} !=
$max_innodb_buffer_pool_instances )
{
badprint "InnoDB buffer pool instances: "
. $myvar{'innodb_buffer_pool_instances'} . "";
push( @adjvars,
"innodb_buffer_pool_instances(="
. $max_innodb_buffer_pool_instances
. ")" );
}
else {
goodprint "InnoDB buffer pool instances: "
. $myvar{'innodb_buffer_pool_instances'} . "";
}
# InnoDB Buffer Pull Size < 1Go
}
else {
if ( $myvar{'innodb_buffer_pool_instances'} != 1 ) {
badprint
"InnoDB buffer pool <= 1G and innodb_buffer_pool_instances(!=1).";
push( @adjvars, "innodb_buffer_pool_instances (=1)" );
}
else {
goodprint "InnoDB buffer pool instances: "
. $myvar{'innodb_buffer_pool_instances'} . "";
}
}
}
# InnoDB Used Buffer Pool
if ( defined $mycalc{'pct_innodb_buffer_used'}
&& $mycalc{'pct_innodb_buffer_used'} < 80 )
{
badprint "InnoDB Used buffer: "
. $mycalc{'pct_innodb_buffer_used'} . "% ("
. ( $mystat{'Innodb_buffer_pool_pages_total'} -
$mystat{'Innodb_buffer_pool_pages_free'} )
. " used/ "
. $mystat{'Innodb_buffer_pool_pages_total'}
. " total)";
}
else {
goodprint "InnoDB Used buffer: "
. $mycalc{'pct_innodb_buffer_used'} . "% ("
. ( $mystat{'Innodb_buffer_pool_pages_total'} -
$mystat{'Innodb_buffer_pool_pages_free'} )
. " used/ "
. $mystat{'Innodb_buffer_pool_pages_total'}
. " total)";
}
# InnoDB Read efficency
if ( defined $mycalc{'pct_read_efficiency'}
&& $mycalc{'pct_read_efficiency'} < 90 )
{
badprint "InnoDB Read buffer efficiency: "
. $mycalc{'pct_read_efficiency'} . "% ("
. ( $mystat{'Innodb_buffer_pool_read_requests'} -
$mystat{'Innodb_buffer_pool_reads'} )
. " hits/ "
. $mystat{'Innodb_buffer_pool_read_requests'}
. " total)";
}
else {
goodprint "InnoDB Read buffer efficiency: "
. $mycalc{'pct_read_efficiency'} . "% ("
. ( $mystat{'Innodb_buffer_pool_read_requests'} -
$mystat{'Innodb_buffer_pool_reads'} )
. " hits/ "
. $mystat{'Innodb_buffer_pool_read_requests'}
. " total)";
}
# InnoDB Write efficiency
if ( defined $mycalc{'pct_write_efficiency'}
&& $mycalc{'pct_write_efficiency'} < 90 )
{
badprint "InnoDB Write buffer efficiency: "
. $mycalc{'pct_write_efficiency'} . "% ("
. ( $mystat{'Innodb_buffer_pool_write_requests'} -
$mystat{'Innodb_buffer_pool_writes'} )
. " hits/ "
. $mystat{'Innodb_buffer_pool_write_requests'}
. " total)";
}
else {
goodprint "InnoDB Write buffer efficiency: "
. $mycalc{'pct_write_efficiency'} . "% ("
. ( $mystat{'Innodb_buffer_pool_write_requests'} -
$mystat{'Innodb_buffer_pool_writes'} )
. " hits/ "
. $mystat{'Innodb_buffer_pool_write_requests'}
. " total)";
}
# InnoDB Log Waits
if ( defined $mystat{'Innodb_log_waits'}
&& $mystat{'Innodb_log_waits'} > 0 )
{
badprint "InnoDB log waits: "
. percentage( $mystat{'Innodb_log_waits'},
$mystat{'Innodb_log_writes'} )
. "% ("
. $mystat{'Innodb_log_waits'}
. " waits / "
. $mystat{'Innodb_log_writes'}
. " writes)";
push( @adjvars,
"innodb_log_buffer_size (>= "
. hr_bytes_rnd( $myvar{'innodb_log_buffer_size'} )
. ")" );
}
else {
goodprint "InnoDB log waits: "
. percentage( $mystat{'Innodb_log_waits'},
$mystat{'Innodb_log_writes'} )
. "% ("
. $mystat{'Innodb_log_waits'}
. " waits / "
. $mystat{'Innodb_log_writes'}
. " writes)";
}
$result{'Calculations'} = {%mycalc};
}
# Recommandations for MySQL Databases
sub mysql_databases {
return if ( $opt{dbstat} == 0 );
prettyprint
"\n-------- Database Metrics ------------------------------------------------";
unless ( mysql_version_ge( 5, 5 ) ) {
infoprint
"Skip Database metrics from information schema missing in this version";
return;
}
my @dblist = select_array("SHOW DATABASES;");
infoprint "There is " . scalar(@dblist) . " Database(s).";
my @totaldbinfo = split /\s/,
select_one(
"SELECT SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES;"
);
infoprint "All Databases:";
infoprint " +-- ROWS : "
. ( $totaldbinfo[0] eq 'NULL' ? 0 : $totaldbinfo[0] ) . "";
infoprint " +-- DATA : "
. hr_bytes( $totaldbinfo[1] ) . "("
. percentage( $totaldbinfo[1], $totaldbinfo[3] ) . "%)";
infoprint " +-- INDEX: "
. hr_bytes( $totaldbinfo[2] ) . "("
. percentage( $totaldbinfo[2], $totaldbinfo[3] ) . "%)";
infoprint " +-- SIZE : " . hr_bytes( $totaldbinfo[3] ) . "";
badprint "Index size is larger than data size \n"
if $totaldbinfo[1] < $totaldbinfo[2];
$result{'Databases'}{'All databases'}{'Rows'} =
( $totaldbinfo[0] eq 'NULL' ? 0 : $totaldbinfo[0] );
$result{'Databases'}{'All databases'}{'Data Size'} = $totaldbinfo[1];
$result{'Databases'}{'All databases'}{'Data Pct'} =
percentage( $totaldbinfo[1], $totaldbinfo[3] ) . "%";
$result{'Databases'}{'All databases'}{'Index Size'} = $totaldbinfo[2];
$result{'Databases'}{'All databases'}{'Index Pct'} =
percentage( $totaldbinfo[2], $totaldbinfo[3] ) . "%";
$result{'Databases'}{'All databases'}{'Total Size'} = $totaldbinfo[3];
foreach (@dblist) {
chomp($_);
if ( $_ eq "information_schema"
or $_ eq "performance_schema"
or $_ eq "mysql"
or $_ eq "" )
{
next;
}
my @dbinfo = split /\s/,
select_one(
"SELECT TABLE_SCHEMA, SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH), COUNT(DISTINCT ENGINE) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_' GROUP BY TABLE_SCHEMA ORDER BY TABLE_SCHEMA"
);
next unless defined $dbinfo[0];
infoprint "Database: " . $dbinfo[0] . "";
infoprint " +-- ROWS : "
. ( !defined( $dbinfo[1] ) or $dbinfo[1] eq 'NULL' ? 0 : $dbinfo[1] )
. "";
infoprint " +-- DATA : "
. hr_bytes( $dbinfo[2] ) . "("
. percentage( $dbinfo[2], $dbinfo[4] ) . "%)";
infoprint " +-- INDEX: "
. hr_bytes( $dbinfo[3] ) . "("
. percentage( $dbinfo[3], $dbinfo[4] ) . "%)";
infoprint " +-- TOTAL: " . hr_bytes( $dbinfo[4] ) . "";
badprint "Index size is larger than data size for $dbinfo[0] \n"
if $dbinfo[2] < $dbinfo[3];
badprint "There " . $dbinfo[5] . " storage engines. Be careful \n"
if $dbinfo[5] > 1;
$result{'Databases'}{ $dbinfo[0] }{'Rows'} = $dbinfo[1];
$result{'Databases'}{ $dbinfo[0] }{'Data Size'} = $dbinfo[2];
$result{'Databases'}{ $dbinfo[0] }{'Data Pct'} =
percentage( $dbinfo[2], $dbinfo[4] ) . "%";
$result{'Databases'}{ $dbinfo[0] }{'Index Size'} = $dbinfo[3];
$result{'Databases'}{ $dbinfo[0] }{'Index Pct'} =
percentage( $dbinfo[3], $dbinfo[4] ) . "%";
$result{'Databases'}{ $dbinfo[0] }{'Total Size'} = $dbinfo[4];
}
}
# Recommandations for MySQL Databases
sub mysql_indexes {
return if ( $opt{idxstat} == 0 );
prettyprint
"\n-------- Indexes Metrics -------------------------------------------------";
unless ( mysql_version_ge( 5, 5 ) ) {
infoprint
"Skip Index metrics from information schema missing in this version";
return;
}
my $selIdxReq = <<'ENDSQL';
SELECT
CONCAT(CONCAT(t.TABLE_SCHEMA, '.'),t.TABLE_NAME) AS 'table'
, CONCAT(CONCAT(CONCAT(s.INDEX_NAME, '('),s.COLUMN_NAME), ')') AS 'index'
, s.SEQ_IN_INDEX AS 'seq'
, s2.max_columns AS 'maxcol'
, s.CARDINALITY AS 'card'
, t.TABLE_ROWS AS 'est_rows'
, ROUND(((s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) * 100), 2) AS 'sel'
FROM INFORMATION_SCHEMA.STATISTICS s
INNER JOIN INFORMATION_SCHEMA.TABLES t
ON s.TABLE_SCHEMA = t.TABLE_SCHEMA
AND s.TABLE_NAME = t.TABLE_NAME
INNER JOIN (
SELECT
TABLE_SCHEMA
, TABLE_NAME
, INDEX_NAME
, MAX(SEQ_IN_INDEX) AS max_columns
FROM INFORMATION_SCHEMA.STATISTICS
WHERE TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema')
GROUP BY TABLE_SCHEMA, TABLE_NAME, INDEX_NAME
) AS s2
ON s.TABLE_SCHEMA = s2.TABLE_SCHEMA
AND s.TABLE_NAME = s2.TABLE_NAME
AND s.INDEX_NAME = s2.INDEX_NAME
WHERE t.TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema')
AND t.TABLE_ROWS > 10
AND s.CARDINALITY IS NOT NULL
AND (s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) < 8.00
ORDER BY sel
LIMIT 10;
ENDSQL
my @idxinfo = select_array($selIdxReq);
infoprint "Worst selectivity indexes:";
foreach (@idxinfo) {
debugprint "$_";
my @info = split /\s/;
infoprint "Index: " . $info[1] . "";
infoprint " +-- COLUNM : " . $info[0] . "";
infoprint " +-- NB SEQS : " . $info[2] . " sequence(s)";
infoprint " +-- NB COLS : " . $info[3] . " column(s)";
infoprint " +-- CARDINALITY : " . $info[4] . " distinct values";
infoprint " +-- NB ROWS : " . $info[5] . " rows";
infoprint " +-- SELECTIVITY : " . $info[6] . "%";
$result{'Indexes'}{ $info[1] }{'Colunm'} = $info[0];
$result{'Indexes'}{ $info[1] }{'Sequence number'} = $info[2];
$result{'Indexes'}{ $info[1] }{'Number of collunm'} = $info[3];
$result{'Indexes'}{ $info[1] }{'Cardianality'} = $info[4];
$result{'Indexes'}{ $info[1] }{'Row number'} = $info[5];
$result{'Indexes'}{ $info[1] }{'Selectivity'} = $info[6];
if ( $info[6] < 25 ) {
badprint "$info[1] has a low selectivity";
}
}
return
unless ( defined( $myvar{'performance_schema'} )
and $myvar{'performance_schema'} eq 'ON' );
$selIdxReq = <<'ENDSQL';
SELECT CONCAT(CONCAT(object_schema,'.'),object_name) AS 'table', index_name
FROM performance_schema.table_io_waits_summary_by_index_usage
WHERE index_name IS NOT NULL
AND count_star =0
AND index_name <> 'PRIMARY'
AND object_schema != 'mysql'
ORDER BY count_star, object_schema, object_name;
ENDSQL
@idxinfo = select_array($selIdxReq);
infoprint "Unsused indexes:";
push( @generalrec, "Remove unused indexes." ) if ( scalar(@idxinfo) > 0 );
foreach (@idxinfo) {
debugprint "$_";
my @info = split /\s/;
badprint "Index: $info[1] on $info[0] is not used.";
push @{ $result{'Indexes'}{'Unused Indexes'} },
$info[0] . "." . $info[1];
}
}
# Take the two recommendation arrays and display them at the end of the output
sub make_recommendations {
prettyprint
"\n-------- Recommendations -----------------------------------------------------";
if ( @generalrec > 0 ) {
prettyprint "General recommendations:";
foreach (@generalrec) { prettyprint " " . $_ . ""; }
}
if ( @adjvars > 0 ) {
prettyprint "Variables to adjust:";
if ( $mycalc{'pct_max_physical_memory'} > 90 ) {
prettyprint
" *** MySQL's maximum memory usage is dangerously high ***\n"
. " *** Add RAM before increasing MySQL buffer variables ***";
}
foreach (@adjvars) { prettyprint " " . $_ . ""; }
}
if ( @generalrec == 0 && @adjvars == 0 ) {
prettyprint
"No additional performance recommendations are available.";
}
}
sub close_outputfile {
close($fh) if defined($fh);
}
sub headerprint {
prettyprint
" >> MySQLTuner $tunerversion - Major Hayden <major\@mhtx.net>\n"
. " >> Bug reports, feature requests, and downloads at http://mysqltuner.com/\n"
. " >> Run with '--help' for additional options and output filtering";
}
sub string2file {
my $filename=shift;
my $content=shift;
open my $fh, q(>), $filename
or die "Unable to open $filename in write mode. please check permissions for this file or directory";
print $fh $content if defined($content);
close $fh;
debugprint $content if ($opt{'debug'});
}
sub file2array {
my $filename = shift;
debugprint "* reading $filename" if ($opt{'debug'});
my $fh;
open( $fh, q(<), "$filename" )
or die "Couldn't open $filename for reading: $!\n";
my @lines = <$fh>;
close($fh);
return @lines;
}
sub file2string {
return join ( '', file2array(@_) );
}
my $templateModel;
if ($opt{'template'} ne 0 ) {
$templateModel=file2string ($opt{'template'});
}else {
# DEFAULT REPORT TEMPLATE
$templateModel=<<'END_TEMPLATE';
<!DOCTYPE html>
<html>
<head>
<title>Report</title>
<meta charset="UTF-8">
</head>
<body>
<h1>Result output</h1>
<pre>
{$data}
</pre>
</body>
</html>
END_TEMPLATE
}
sub dump_result {
if ($opt{'debug'}) {
debugprint Dumper( \%result );
}
debugprint "HTML REPORT: $opt{'reportfile'}";
if ($opt{'reportfile'} ne 0 ) {
eval "{ use Text::Template }";
if ($@) {
badprint "Text::Template Module is needed.";
exit 1;
}
my $vars= {'data' => Dumper( \%result ) };
my $template;
{
no warnings 'once';
$template = Text::Template->new(TYPE => 'STRING', PREPEND => q{;}, SOURCE => $templateModel)
or die "Couldn't construct template: $Text::Template::ERROR";
}
open my $fh, q(>), $opt{'reportfile'}
or die "Unable to open $opt{'reportfile'} in write mode. please check permissions for this file or directory";
$template->fill_in(HASH =>$vars, OUTPUT=>$fh );
close $fh;
}
}
# ---------------------------------------------------------------------------
# BEGIN 'MAIN'
# ---------------------------------------------------------------------------
headerprint # Header Print
mysql_setup; # Gotta login first
validate_tuner_version; # Check last version
os_setup; # Set up some OS variables
get_all_vars; # Toss variables/status into hashes
get_tuning_info; # Get information about the tuning connexion
validate_mysql_version; # Check current MySQL version
check_architecture; # Suggest 64-bit upgrade
check_storage_engines; # Show enabled storage engines
mysql_databases; # Show informations about databases
mysql_indexes; # Show informations about indexes
security_recommendations; # Display some security recommendations
calculations; # Calculate everything we need
mysql_stats; # Print the server stats
mysql_myisam; # Print MyISAM stats
mysql_innodb; # Print InnoDB stats
mysql_ariadb; # Print AriaDB stats
get_replication_status; # Print replication info
make_recommendations; # Make recommendations based on stats
dump_result; # Dump result if debug is on
close_outputfile; # Close reportfile if needed
# ---------------------------------------------------------------------------
# END 'MAIN'
# ---------------------------------------------------------------------------
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
MySQLTuner 1.6.1 - MySQL High Performance Tuning Script
=head1 IMPORTANT USAGE GUIDELINES
To run the script with the default options, run the script without arguments
Allow MySQL server to run for at least 24-48 hours before trusting suggestions
Some routines may require root level privileges (script will provide warnings)
You must provide the remote server's total memory when connecting to other servers
=head1 CONNECTION AND AUTHENTIFICATION
--host <hostname> Connect to a remote host to perform tests (default: localhost)
--socket <socket> Use a different socket for a local connection
--port <port> Port to use for connection (default: 3306)
--user <username> Username to use for authentication
--pass <password> Password to use for authentication
--mysqladmin <path> Path to a custom mysqladmin executable
--mysqlcmd <path> Path to a custom mysql executable
=head1 PERFORMANCE AND REPORTING OPTIONS
--skipsize Don't enumerate tables and their types/sizes (default: on)
(Recommended for servers with many tables)
--skippassword Don't perform checks on user passwords(default: off)
--checkversion Check for updates to MySQLTuner (default: don't check)
--forcemem <size> Amount of RAM installed in megabytes
--forceswap <size> Amount of swap memory configured in megabytes
--passwordfile <path>Path to a password file list(one password by line)
=head1 OUTPUT OPTIONS
--silent Don't output anything on screen
--nogood Remove OK responses
--nobad Remove negative/suggestion responses
--noinfo Remove informational responses
--debug Print debug information
--dbstat Print database information
--idxstat Print index information
--nocolor Don't print output in color
--buffers Print global and per-thread buffer values
--outputfile <path> Path to a output txt file
--reportfile <path> Path to a report txt file
--template <path> Path to a template file
=head1 PERLDOC
You can find documentation for this module with the perldoc command.
perldoc mysqltuner
=head2 INTENALS
L<https://github.com/major/MySQLTuner-perl/blob/master/INTERNALS.md>
Internal documentation
=head1 AUTHORS
Major Hayden - major@mhtx.net
=head1 CONTRIBUTORS
=over 4
=item *
Matthew Montgomery
=item *
Paul Kehrer
=item *
Dave Burgess
=item *
Jonathan Hinds
=item *
Mike Jackson
=item *
Nils Breunese
=item *
Shawn Ashlee
=item *
Luuk Vosslamber
=item *
Ville Skytta
=item *
Trent Hornibrook
=item *
Jason Gill
=item *
Mark Imbriaco
=item *
Greg Eden
=item *
Aubin Galinotti
=item *
Giovanni Bechis
=item *
Bill Bradford
=item *
Ryan Novosielski
=item *
Michael Scheidell
=item *
Blair Christensen
=item *
Hans du Plooy
=item *
Victor Trac
=item *
Everett Barnes
=item *
Tom Krouper
=item *
Gary Barrueto
=item *
Simon Greenaway
=item *
Adam Stein
=item *
Isart Montane
=item *
Baptiste M.
=item *
Cole Turner
=item *
Major Hayden
=item *
Joe Ashcraft
=item *
Jean-Marie Renouard
=back
=head1 SUPPORT
Bug reports, feature requests, and downloads at http://mysqltuner.com/
Bug tracker can be found at https://github.com/major/MySQLTuner-perl/issues
Maintained by Major Hayden (major\@mhtx.net) - Licensed under GPL
=head1 SOURCE CODE
L<https://github.com/major/MySQLTuner-perl>
git clone https://github.com/major/MySQLTuner-perl.git
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2006-2015 Major Hayden - major@mhtx.net
For the latest updates, please visit http://mysqltuner.com/
Git repository available at http://github.com/major/MySQLTuner-perl
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
=cut
# Local variables:
# indent-tabs-mode: t
# cperl-indent-level: 8
# perl-indent-level: 8
# End:
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