Merge commit 'd57351465531b38689892ec862de2725b52842dd' into unbound/main2 MFC after: 1 month
533 lines
18 KiB
C
533 lines
18 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
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE 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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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#include <sys/time.h>
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#include <sys/types.h>
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#include "daemon/stats.h"
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#include "daemon/worker.h"
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#include "daemon/daemon.h"
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#include "services/mesh.h"
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#include "services/outside_network.h"
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#include "services/listen_dnsport.h"
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#include "util/config_file.h"
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#include "util/tube.h"
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#include "util/timehist.h"
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#include "util/net_help.h"
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#include "validator/validator.h"
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#include "iterator/iterator.h"
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#include "sldns/sbuffer.h"
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#include "services/cache/rrset.h"
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#include "services/cache/infra.h"
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#include "services/authzone.h"
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#include "validator/val_kcache.h"
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#include "validator/val_neg.h"
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#ifdef CLIENT_SUBNET
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#include "edns-subnet/subnetmod.h"
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#endif
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#ifdef HAVE_SSL
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#include <openssl/ssl.h>
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#endif
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/** add timers and the values do not overflow or become negative */
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static void
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stats_timeval_add(long long* d_sec, long long* d_usec, long long add_sec, long long add_usec)
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{
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#ifndef S_SPLINT_S
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(*d_sec) += add_sec;
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(*d_usec) += add_usec;
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if((*d_usec) >= 1000000) {
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(*d_usec) -= 1000000;
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(*d_sec)++;
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}
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#endif
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}
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void server_stats_init(struct ub_server_stats* stats, struct config_file* cfg)
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{
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memset(stats, 0, sizeof(*stats));
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stats->extended = cfg->stat_extended;
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}
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void server_stats_querymiss(struct ub_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((long long)worker->env.mesh->all.count > stats->max_query_list_size)
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stats->max_query_list_size = (long long)worker->env.mesh->all.count;
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}
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void server_stats_prefetch(struct ub_server_stats* stats, struct worker* worker)
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{
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stats->num_queries_prefetch++;
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/* changes the query list size so account that, like a querymiss */
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stats->sum_query_list_size += worker->env.mesh->all.count;
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if((long long)worker->env.mesh->all.count > stats->max_query_list_size)
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stats->max_query_list_size = (long long)worker->env.mesh->all.count;
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}
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void server_stats_log(struct ub_server_stats* stats, struct worker* worker,
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int threadnum)
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{
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log_info("server stats for thread %d: %u queries, "
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"%u answers from cache, %u recursions, %u prefetch, %u rejected by "
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"ip ratelimiting",
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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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(unsigned)stats->num_queries_missed_cache,
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(unsigned)stats->num_queries_prefetch,
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(unsigned)stats->num_queries_ip_ratelimited);
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log_info("server stats for thread %d: requestlist max %u avg %g "
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"exceeded %u jostled %u", threadnum,
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(unsigned)stats->max_query_list_size,
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(stats->num_queries_missed_cache+stats->num_queries_prefetch)?
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(double)stats->sum_query_list_size/
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(double)(stats->num_queries_missed_cache+
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stats->num_queries_prefetch) : 0.0,
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(unsigned)worker->env.mesh->stats_dropped,
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(unsigned)worker->env.mesh->stats_jostled);
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}
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#ifdef CLIENT_SUBNET
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/** Set the EDNS Subnet stats. */
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static void
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set_subnet_stats(struct worker* worker, struct ub_server_stats* svr,
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int reset)
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{
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int m = modstack_find(&worker->env.mesh->mods, "subnetcache");
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struct subnet_env* sne;
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if(m == -1)
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return;
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sne = (struct subnet_env*)worker->env.modinfo[m];
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if(reset && !worker->env.cfg->stat_cumulative) {
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lock_rw_wrlock(&sne->biglock);
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} else {
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lock_rw_rdlock(&sne->biglock);
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}
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svr->num_query_subnet = (long long)(sne->num_msg_nocache + sne->num_msg_cache);
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svr->num_query_subnet_cache = (long long)sne->num_msg_cache;
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if(reset && !worker->env.cfg->stat_cumulative) {
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sne->num_msg_cache = 0;
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sne->num_msg_nocache = 0;
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}
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lock_rw_unlock(&sne->biglock);
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}
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#endif /* CLIENT_SUBNET */
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/** Set the neg cache stats. */
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static void
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set_neg_cache_stats(struct worker* worker, struct ub_server_stats* svr,
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int reset)
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{
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int m = modstack_find(&worker->env.mesh->mods, "validator");
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struct val_env* ve;
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struct val_neg_cache* neg;
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if(m == -1)
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return;
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ve = (struct val_env*)worker->env.modinfo[m];
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if(!ve->neg_cache)
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return;
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neg = ve->neg_cache;
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lock_basic_lock(&neg->lock);
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svr->num_neg_cache_noerror = (long long)neg->num_neg_cache_noerror;
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svr->num_neg_cache_nxdomain = (long long)neg->num_neg_cache_nxdomain;
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if(reset && !worker->env.cfg->stat_cumulative) {
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neg->num_neg_cache_noerror = 0;
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neg->num_neg_cache_nxdomain = 0;
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}
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lock_basic_unlock(&neg->lock);
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}
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/** get rrsets bogus number from validator */
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static size_t
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get_rrset_bogus(struct worker* worker, int reset)
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{
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int m = modstack_find(&worker->env.mesh->mods, "validator");
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struct val_env* ve;
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size_t r;
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if(m == -1)
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return 0;
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ve = (struct val_env*)worker->env.modinfo[m];
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lock_basic_lock(&ve->bogus_lock);
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r = ve->num_rrset_bogus;
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if(reset && !worker->env.cfg->stat_cumulative)
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ve->num_rrset_bogus = 0;
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lock_basic_unlock(&ve->bogus_lock);
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return r;
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}
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/** get number of ratelimited queries from iterator */
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static size_t
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get_queries_ratelimit(struct worker* worker, int reset)
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{
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int m = modstack_find(&worker->env.mesh->mods, "iterator");
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struct iter_env* ie;
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size_t r;
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if(m == -1)
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return 0;
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ie = (struct iter_env*)worker->env.modinfo[m];
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lock_basic_lock(&ie->queries_ratelimit_lock);
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r = ie->num_queries_ratelimited;
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if(reset && !worker->env.cfg->stat_cumulative)
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ie->num_queries_ratelimited = 0;
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lock_basic_unlock(&ie->queries_ratelimit_lock);
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return r;
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}
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#ifdef USE_DNSCRYPT
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/** get the number of shared secret cache miss */
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static size_t
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get_dnscrypt_cache_miss(struct worker* worker, int reset)
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{
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size_t r;
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struct dnsc_env* de = worker->daemon->dnscenv;
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if(!de) return 0;
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lock_basic_lock(&de->shared_secrets_cache_lock);
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r = de->num_query_dnscrypt_secret_missed_cache;
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if(reset && !worker->env.cfg->stat_cumulative)
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de->num_query_dnscrypt_secret_missed_cache = 0;
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lock_basic_unlock(&de->shared_secrets_cache_lock);
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return r;
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}
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/** get the number of replayed queries */
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static size_t
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get_dnscrypt_replay(struct worker* worker, int reset)
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{
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size_t r;
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struct dnsc_env* de = worker->daemon->dnscenv;
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lock_basic_lock(&de->nonces_cache_lock);
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r = de->num_query_dnscrypt_replay;
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if(reset && !worker->env.cfg->stat_cumulative)
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de->num_query_dnscrypt_replay = 0;
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lock_basic_unlock(&de->nonces_cache_lock);
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return r;
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}
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#endif /* USE_DNSCRYPT */
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void
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server_stats_compile(struct worker* worker, struct ub_stats_info* s, int reset)
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{
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int i;
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struct listen_list* lp;
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s->svr = worker->stats;
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s->mesh_num_states = (long long)worker->env.mesh->all.count;
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s->mesh_num_reply_states = (long long)worker->env.mesh->num_reply_states;
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s->mesh_jostled = (long long)worker->env.mesh->stats_jostled;
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s->mesh_dropped = (long long)worker->env.mesh->stats_dropped;
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s->mesh_replies_sent = (long long)worker->env.mesh->replies_sent;
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s->mesh_replies_sum_wait_sec = (long long)worker->env.mesh->replies_sum_wait.tv_sec;
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s->mesh_replies_sum_wait_usec = (long long)worker->env.mesh->replies_sum_wait.tv_usec;
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s->mesh_time_median = timehist_quartile(worker->env.mesh->histogram,
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0.50);
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/* add in the values from the mesh */
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s->svr.ans_secure += (long long)worker->env.mesh->ans_secure;
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s->svr.ans_bogus += (long long)worker->env.mesh->ans_bogus;
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s->svr.ans_rcode_nodata += (long long)worker->env.mesh->ans_nodata;
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s->svr.ans_expired += (long long)worker->env.mesh->ans_expired;
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for(i=0; i<UB_STATS_RCODE_NUM; i++)
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s->svr.ans_rcode[i] += (long long)worker->env.mesh->ans_rcode[i];
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for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++)
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s->svr.rpz_action[i] += (long long)worker->env.mesh->rpz_action[i];
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timehist_export(worker->env.mesh->histogram, s->svr.hist,
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NUM_BUCKETS_HIST);
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/* values from outside network */
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s->svr.unwanted_replies = (long long)worker->back->unwanted_replies;
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s->svr.qtcp_outgoing = (long long)worker->back->num_tcp_outgoing;
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s->svr.qudp_outgoing = (long long)worker->back->num_udp_outgoing;
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/* get and reset validator rrset bogus number */
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s->svr.rrset_bogus = (long long)get_rrset_bogus(worker, reset);
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/* get and reset iterator query ratelimit number */
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s->svr.queries_ratelimited = (long long)get_queries_ratelimit(worker, reset);
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/* get cache sizes */
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s->svr.msg_cache_count = (long long)count_slabhash_entries(worker->env.msg_cache);
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s->svr.rrset_cache_count = (long long)count_slabhash_entries(&worker->env.rrset_cache->table);
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s->svr.infra_cache_count = (long long)count_slabhash_entries(worker->env.infra_cache->hosts);
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if(worker->env.key_cache)
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s->svr.key_cache_count = (long long)count_slabhash_entries(worker->env.key_cache->slab);
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else s->svr.key_cache_count = 0;
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#ifdef USE_DNSCRYPT
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if(worker->daemon->dnscenv) {
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s->svr.num_query_dnscrypt_secret_missed_cache =
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(long long)get_dnscrypt_cache_miss(worker, reset);
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s->svr.shared_secret_cache_count = (long long)count_slabhash_entries(
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worker->daemon->dnscenv->shared_secrets_cache);
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s->svr.nonce_cache_count = (long long)count_slabhash_entries(
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worker->daemon->dnscenv->nonces_cache);
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s->svr.num_query_dnscrypt_replay =
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(long long)get_dnscrypt_replay(worker, reset);
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} else {
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s->svr.num_query_dnscrypt_secret_missed_cache = 0;
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s->svr.shared_secret_cache_count = 0;
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s->svr.nonce_cache_count = 0;
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s->svr.num_query_dnscrypt_replay = 0;
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}
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#else
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s->svr.num_query_dnscrypt_secret_missed_cache = 0;
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s->svr.shared_secret_cache_count = 0;
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s->svr.nonce_cache_count = 0;
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s->svr.num_query_dnscrypt_replay = 0;
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#endif /* USE_DNSCRYPT */
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if(worker->env.auth_zones) {
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if(reset && !worker->env.cfg->stat_cumulative) {
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lock_rw_wrlock(&worker->env.auth_zones->lock);
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} else {
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lock_rw_rdlock(&worker->env.auth_zones->lock);
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}
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s->svr.num_query_authzone_up = (long long)worker->env.
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auth_zones->num_query_up;
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s->svr.num_query_authzone_down = (long long)worker->env.
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auth_zones->num_query_down;
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if(reset && !worker->env.cfg->stat_cumulative) {
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worker->env.auth_zones->num_query_up = 0;
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worker->env.auth_zones->num_query_down = 0;
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}
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lock_rw_unlock(&worker->env.auth_zones->lock);
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}
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s->svr.mem_stream_wait =
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(long long)tcp_req_info_get_stream_buffer_size();
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s->svr.mem_http2_query_buffer =
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(long long)http2_get_query_buffer_size();
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s->svr.mem_http2_response_buffer =
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(long long)http2_get_response_buffer_size();
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/* Set neg cache usage numbers */
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set_neg_cache_stats(worker, &s->svr, reset);
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#ifdef CLIENT_SUBNET
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/* EDNS Subnet usage numbers */
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set_subnet_stats(worker, &s->svr, reset);
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#else
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s->svr.num_query_subnet = 0;
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s->svr.num_query_subnet_cache = 0;
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#endif
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/* get tcp accept usage */
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s->svr.tcp_accept_usage = 0;
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for(lp = worker->front->cps; lp; lp = lp->next) {
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if(lp->com->type == comm_tcp_accept)
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s->svr.tcp_accept_usage += (long long)lp->com->cur_tcp_count;
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}
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if(reset && !worker->env.cfg->stat_cumulative) {
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worker_stats_clear(worker);
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}
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}
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void server_stats_obtain(struct worker* worker, struct worker* who,
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struct ub_stats_info* s, int reset)
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{
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uint8_t *reply = NULL;
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uint32_t len = 0;
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if(worker == who) {
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/* just fill it in */
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server_stats_compile(worker, s, reset);
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return;
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}
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/* communicate over tube */
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verbose(VERB_ALGO, "write stats cmd");
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if(reset)
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worker_send_cmd(who, worker_cmd_stats);
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else worker_send_cmd(who, worker_cmd_stats_noreset);
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verbose(VERB_ALGO, "wait for stats reply");
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if(!tube_read_msg(worker->cmd, &reply, &len, 0))
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fatal_exit("failed to read stats over cmd channel");
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if(len != (uint32_t)sizeof(*s))
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fatal_exit("stats on cmd channel wrong length %d %d",
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(int)len, (int)sizeof(*s));
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memcpy(s, reply, (size_t)len);
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free(reply);
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}
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void server_stats_reply(struct worker* worker, int reset)
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{
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struct ub_stats_info s;
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server_stats_compile(worker, &s, reset);
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verbose(VERB_ALGO, "write stats replymsg");
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if(!tube_write_msg(worker->daemon->workers[0]->cmd,
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(uint8_t*)&s, sizeof(s), 0))
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fatal_exit("could not write stat values over cmd channel");
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}
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void server_stats_add(struct ub_stats_info* total, struct ub_stats_info* a)
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{
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total->svr.num_queries += a->svr.num_queries;
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total->svr.num_queries_ip_ratelimited += a->svr.num_queries_ip_ratelimited;
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total->svr.num_queries_missed_cache += a->svr.num_queries_missed_cache;
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total->svr.num_queries_prefetch += a->svr.num_queries_prefetch;
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total->svr.sum_query_list_size += a->svr.sum_query_list_size;
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total->svr.ans_expired += a->svr.ans_expired;
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#ifdef USE_DNSCRYPT
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total->svr.num_query_dnscrypt_crypted += a->svr.num_query_dnscrypt_crypted;
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total->svr.num_query_dnscrypt_cert += a->svr.num_query_dnscrypt_cert;
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total->svr.num_query_dnscrypt_cleartext += \
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a->svr.num_query_dnscrypt_cleartext;
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total->svr.num_query_dnscrypt_crypted_malformed += \
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a->svr.num_query_dnscrypt_crypted_malformed;
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#endif /* USE_DNSCRYPT */
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/* the max size reached is upped to higher of both */
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if(a->svr.max_query_list_size > total->svr.max_query_list_size)
|
|
total->svr.max_query_list_size = a->svr.max_query_list_size;
|
|
|
|
if(a->svr.extended) {
|
|
int i;
|
|
total->svr.qtype_big += a->svr.qtype_big;
|
|
total->svr.qclass_big += a->svr.qclass_big;
|
|
total->svr.qtcp += a->svr.qtcp;
|
|
total->svr.qtcp_outgoing += a->svr.qtcp_outgoing;
|
|
total->svr.qudp_outgoing += a->svr.qudp_outgoing;
|
|
total->svr.qtls += a->svr.qtls;
|
|
total->svr.qtls_resume += a->svr.qtls_resume;
|
|
total->svr.qhttps += a->svr.qhttps;
|
|
total->svr.qipv6 += a->svr.qipv6;
|
|
total->svr.qbit_QR += a->svr.qbit_QR;
|
|
total->svr.qbit_AA += a->svr.qbit_AA;
|
|
total->svr.qbit_TC += a->svr.qbit_TC;
|
|
total->svr.qbit_RD += a->svr.qbit_RD;
|
|
total->svr.qbit_RA += a->svr.qbit_RA;
|
|
total->svr.qbit_Z += a->svr.qbit_Z;
|
|
total->svr.qbit_AD += a->svr.qbit_AD;
|
|
total->svr.qbit_CD += a->svr.qbit_CD;
|
|
total->svr.qEDNS += a->svr.qEDNS;
|
|
total->svr.qEDNS_DO += a->svr.qEDNS_DO;
|
|
total->svr.ans_rcode_nodata += a->svr.ans_rcode_nodata;
|
|
total->svr.ans_secure += a->svr.ans_secure;
|
|
total->svr.ans_bogus += a->svr.ans_bogus;
|
|
total->svr.unwanted_replies += a->svr.unwanted_replies;
|
|
total->svr.unwanted_queries += a->svr.unwanted_queries;
|
|
total->svr.tcp_accept_usage += a->svr.tcp_accept_usage;
|
|
for(i=0; i<UB_STATS_QTYPE_NUM; i++)
|
|
total->svr.qtype[i] += a->svr.qtype[i];
|
|
for(i=0; i<UB_STATS_QCLASS_NUM; i++)
|
|
total->svr.qclass[i] += a->svr.qclass[i];
|
|
for(i=0; i<UB_STATS_OPCODE_NUM; i++)
|
|
total->svr.qopcode[i] += a->svr.qopcode[i];
|
|
for(i=0; i<UB_STATS_RCODE_NUM; i++)
|
|
total->svr.ans_rcode[i] += a->svr.ans_rcode[i];
|
|
for(i=0; i<NUM_BUCKETS_HIST; i++)
|
|
total->svr.hist[i] += a->svr.hist[i];
|
|
for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++)
|
|
total->svr.rpz_action[i] += a->svr.rpz_action[i];
|
|
}
|
|
|
|
total->mesh_num_states += a->mesh_num_states;
|
|
total->mesh_num_reply_states += a->mesh_num_reply_states;
|
|
total->mesh_jostled += a->mesh_jostled;
|
|
total->mesh_dropped += a->mesh_dropped;
|
|
total->mesh_replies_sent += a->mesh_replies_sent;
|
|
stats_timeval_add(&total->mesh_replies_sum_wait_sec, &total->mesh_replies_sum_wait_usec, a->mesh_replies_sum_wait_sec, a->mesh_replies_sum_wait_usec);
|
|
/* the medians are averaged together, this is not as accurate as
|
|
* taking the median over all of the data, but is good and fast
|
|
* added up here, division later*/
|
|
total->mesh_time_median += a->mesh_time_median;
|
|
}
|
|
|
|
void server_stats_insquery(struct ub_server_stats* stats, struct comm_point* c,
|
|
uint16_t qtype, uint16_t qclass, struct edns_data* edns,
|
|
struct comm_reply* repinfo)
|
|
{
|
|
uint16_t flags = sldns_buffer_read_u16_at(c->buffer, 2);
|
|
if(qtype < UB_STATS_QTYPE_NUM)
|
|
stats->qtype[qtype]++;
|
|
else stats->qtype_big++;
|
|
if(qclass < UB_STATS_QCLASS_NUM)
|
|
stats->qclass[qclass]++;
|
|
else stats->qclass_big++;
|
|
stats->qopcode[ LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) ]++;
|
|
if(c->type != comm_udp) {
|
|
stats->qtcp++;
|
|
if(c->ssl != NULL) {
|
|
stats->qtls++;
|
|
#ifdef HAVE_SSL
|
|
if(SSL_session_reused(c->ssl))
|
|
stats->qtls_resume++;
|
|
#endif
|
|
if(c->type == comm_http)
|
|
stats->qhttps++;
|
|
}
|
|
}
|
|
if(repinfo && addr_is_ip6(&repinfo->addr, repinfo->addrlen))
|
|
stats->qipv6++;
|
|
if( (flags&BIT_QR) )
|
|
stats->qbit_QR++;
|
|
if( (flags&BIT_AA) )
|
|
stats->qbit_AA++;
|
|
if( (flags&BIT_TC) )
|
|
stats->qbit_TC++;
|
|
if( (flags&BIT_RD) )
|
|
stats->qbit_RD++;
|
|
if( (flags&BIT_RA) )
|
|
stats->qbit_RA++;
|
|
if( (flags&BIT_Z) )
|
|
stats->qbit_Z++;
|
|
if( (flags&BIT_AD) )
|
|
stats->qbit_AD++;
|
|
if( (flags&BIT_CD) )
|
|
stats->qbit_CD++;
|
|
if(edns->edns_present) {
|
|
stats->qEDNS++;
|
|
if( (edns->bits & EDNS_DO) )
|
|
stats->qEDNS_DO++;
|
|
}
|
|
}
|
|
|
|
void server_stats_insrcode(struct ub_server_stats* stats, sldns_buffer* buf)
|
|
{
|
|
if(stats->extended && sldns_buffer_limit(buf) != 0) {
|
|
int r = (int)LDNS_RCODE_WIRE( sldns_buffer_begin(buf) );
|
|
stats->ans_rcode[r] ++;
|
|
if(r == 0 && LDNS_ANCOUNT( sldns_buffer_begin(buf) ) == 0)
|
|
stats->ans_rcode_nodata ++;
|
|
}
|
|
}
|