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73 lines
2.8 KiB
C
73 lines
2.8 KiB
C
/*
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* daemon/stats.c - collect runtime performance indicators.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file describes the data structure used to collect runtime performance
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* numbers. These 'statistics' may be of interest to the operator.
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*/
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#include "config.h"
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#include "daemon/stats.h"
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#include "daemon/worker.h"
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#include "services/mesh.h"
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void server_stats_init(struct server_stats* stats)
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{
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memset(stats, 0, sizeof(stats));
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}
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void server_stats_querymiss(struct server_stats* stats, struct worker* worker)
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{
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stats->num_queries_missed_cache++;
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stats->sum_query_list_size += worker->env.mesh->all.count;
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if(worker->env.mesh->all.count > stats->max_query_list_size)
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stats->max_query_list_size = worker->env.mesh->all.count;
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}
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void server_stats_log(struct server_stats* stats, int threadnum)
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{
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log_info("server stats for thread %d: %u queries, %u from cache",
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threadnum, (unsigned)stats->num_queries,
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(unsigned)(stats->num_queries -
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stats->num_queries_missed_cache));
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log_info("server stats for thread %d: requestlist max %u avg %g "
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"exceeded %u", threadnum, (unsigned)stats->max_query_list_size,
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stats->num_queries_missed_cache?
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(double)stats->sum_query_list_size/
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stats->num_queries_missed_cache : 0.0,
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(unsigned)stats->num_query_list_exceeded);
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}
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