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Added ability to detect if innodb buffers are overused

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This commit is contained in:
laf 2015-07-29 22:03:25 +00:00
parent 591b0bbcde
commit 03f0de5d76
1 changed files with 27 additions and 1 deletions
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28
daily.php
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@ -13,7 +13,33 @@ require 'includes/functions.php';
$options = getopt('f:');
if ($options['f'] === 'update') {
echo $config['update'];
$pool_size = dbFetchCell('SELECT @@innodb_buffer_pool_size');
// The following query is from the excellent mysqltuner.pl by Major Hayden https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.pl
$pool_used = dbFetchCell('SELECT SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ("information_schema", "performance_schema", "mysql") AND ENGINE = "InnoDB" GROUP BY ENGINE ORDER BY ENGINE ASC');
if ($pool_used > $pool_size) {
if (!empty($config['default_mail'])) {
$subject = $config['project_name'] . ' auto-update action required';
$message = '
Hi,
We have just tried to update your installation but it looks like the InnoDB buffer size is too low.
Because of this we have stopped the auto-update running to ensure your system is ok.
You currently have a configured innodb_buffer_pool_size of ' . $pool_size / 1024 / 1024 / 1024 . 'G but is
currently using ' . $pool_used / 1024 / 1024 . '
Take a look at https://dev.mysql.com/doc/refman/5.6/en/innodb-buffer-pool.html for further details.
The ' . $config['project_name'] . ' team.
';
send_mail($config['default_mail'],$subject,$message,$html=false);
}
echo 0;
}
else {
echo $config['update'];
}
}
if ($options['f'] === 'syslog') {