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-rw-r--r--external/unbound/daemon/stats.c343
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diff --git a/external/unbound/daemon/stats.c b/external/unbound/daemon/stats.c
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-/*
- * daemon/stats.c - collect runtime performance indicators.
- *
- * Copyright (c) 2007, NLnet Labs. All rights reserved.
- *
- * This software is open source.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of the NLNET LABS nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * \file
- *
- * This file describes the data structure used to collect runtime performance
- * numbers. These 'statistics' may be of interest to the operator.
- */
-#include "config.h"
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-#include <sys/time.h>
-#include <sys/types.h>
-#include "daemon/stats.h"
-#include "daemon/worker.h"
-#include "daemon/daemon.h"
-#include "services/mesh.h"
-#include "services/outside_network.h"
-#include "services/listen_dnsport.h"
-#include "util/config_file.h"
-#include "util/tube.h"
-#include "util/timehist.h"
-#include "util/net_help.h"
-#include "validator/validator.h"
-#include "sldns/sbuffer.h"
-#include "services/cache/rrset.h"
-#include "services/cache/infra.h"
-#include "validator/val_kcache.h"
-
-/** add timers and the values do not overflow or become negative */
-static void
-timeval_add(struct timeval* d, const struct timeval* add)
-{
-#ifndef S_SPLINT_S
- d->tv_sec += add->tv_sec;
- d->tv_usec += add->tv_usec;
- if(d->tv_usec > 1000000) {
- d->tv_usec -= 1000000;
- d->tv_sec++;
- }
-#endif
-}
-
-void server_stats_init(struct server_stats* stats, struct config_file* cfg)
-{
- memset(stats, 0, sizeof(*stats));
- stats->extended = cfg->stat_extended;
-}
-
-void server_stats_querymiss(struct server_stats* stats, struct worker* worker)
-{
- stats->num_queries_missed_cache++;
- stats->sum_query_list_size += worker->env.mesh->all.count;
- if(worker->env.mesh->all.count > stats->max_query_list_size)
- stats->max_query_list_size = worker->env.mesh->all.count;
-}
-
-void server_stats_prefetch(struct server_stats* stats, struct worker* worker)
-{
- stats->num_queries_prefetch++;
- /* changes the query list size so account that, like a querymiss */
- stats->sum_query_list_size += worker->env.mesh->all.count;
- if(worker->env.mesh->all.count > stats->max_query_list_size)
- stats->max_query_list_size = worker->env.mesh->all.count;
-}
-
-void server_stats_log(struct server_stats* stats, struct worker* worker,
- int threadnum)
-{
- log_info("server stats for thread %d: %u queries, "
- "%u answers from cache, %u recursions, %u prefetch, %u rejected by "
- "ip ratelimiting",
- threadnum, (unsigned)stats->num_queries,
- (unsigned)(stats->num_queries -
- stats->num_queries_missed_cache),
- (unsigned)stats->num_queries_missed_cache,
- (unsigned)stats->num_queries_prefetch,
- (unsigned)stats->num_queries_ip_ratelimited);
- log_info("server stats for thread %d: requestlist max %u avg %g "
- "exceeded %u jostled %u", threadnum,
- (unsigned)stats->max_query_list_size,
- (stats->num_queries_missed_cache+stats->num_queries_prefetch)?
- (double)stats->sum_query_list_size/
- (stats->num_queries_missed_cache+
- stats->num_queries_prefetch) : 0.0,
- (unsigned)worker->env.mesh->stats_dropped,
- (unsigned)worker->env.mesh->stats_jostled);
-}
-
-/** get rrsets bogus number from validator */
-static size_t
-get_rrset_bogus(struct worker* worker)
-{
- int m = modstack_find(&worker->env.mesh->mods, "validator");
- struct val_env* ve;
- size_t r;
- if(m == -1)
- return 0;
- ve = (struct val_env*)worker->env.modinfo[m];
- lock_basic_lock(&ve->bogus_lock);
- r = ve->num_rrset_bogus;
- if(!worker->env.cfg->stat_cumulative)
- ve->num_rrset_bogus = 0;
- lock_basic_unlock(&ve->bogus_lock);
- return r;
-}
-
-void
-server_stats_compile(struct worker* worker, struct stats_info* s, int reset)
-{
- int i;
- struct listen_list* lp;
-
- s->svr = worker->stats;
- s->mesh_num_states = worker->env.mesh->all.count;
- s->mesh_num_reply_states = worker->env.mesh->num_reply_states;
- s->mesh_jostled = worker->env.mesh->stats_jostled;
- s->mesh_dropped = worker->env.mesh->stats_dropped;
- s->mesh_replies_sent = worker->env.mesh->replies_sent;
- s->mesh_replies_sum_wait = worker->env.mesh->replies_sum_wait;
- s->mesh_time_median = timehist_quartile(worker->env.mesh->histogram,
- 0.50);
-
- /* add in the values from the mesh */
- s->svr.ans_secure += worker->env.mesh->ans_secure;
- s->svr.ans_bogus += worker->env.mesh->ans_bogus;
- s->svr.ans_rcode_nodata += worker->env.mesh->ans_nodata;
- for(i=0; i<16; i++)
- s->svr.ans_rcode[i] += worker->env.mesh->ans_rcode[i];
- timehist_export(worker->env.mesh->histogram, s->svr.hist,
- NUM_BUCKETS_HIST);
- /* values from outside network */
- s->svr.unwanted_replies = worker->back->unwanted_replies;
- s->svr.qtcp_outgoing = worker->back->num_tcp_outgoing;
-
- /* get and reset validator rrset bogus number */
- s->svr.rrset_bogus = get_rrset_bogus(worker);
-
- /* get cache sizes */
- s->svr.msg_cache_count = count_slabhash_entries(worker->env.msg_cache);
- s->svr.rrset_cache_count = count_slabhash_entries(&worker->env.rrset_cache->table);
- s->svr.infra_cache_count = count_slabhash_entries(worker->env.infra_cache->hosts);
- if(worker->env.key_cache)
- s->svr.key_cache_count = count_slabhash_entries(worker->env.key_cache->slab);
- else s->svr.key_cache_count = 0;
-
- /* get tcp accept usage */
- s->svr.tcp_accept_usage = 0;
- for(lp = worker->front->cps; lp; lp = lp->next) {
- if(lp->com->type == comm_tcp_accept)
- s->svr.tcp_accept_usage += lp->com->cur_tcp_count;
- }
-
- if(reset && !worker->env.cfg->stat_cumulative) {
- worker_stats_clear(worker);
- }
-}
-
-void server_stats_obtain(struct worker* worker, struct worker* who,
- struct stats_info* s, int reset)
-{
- uint8_t *reply = NULL;
- uint32_t len = 0;
- if(worker == who) {
- /* just fill it in */
- server_stats_compile(worker, s, reset);
- return;
- }
- /* communicate over tube */
- verbose(VERB_ALGO, "write stats cmd");
- if(reset)
- worker_send_cmd(who, worker_cmd_stats);
- else worker_send_cmd(who, worker_cmd_stats_noreset);
- verbose(VERB_ALGO, "wait for stats reply");
- if(!tube_read_msg(worker->cmd, &reply, &len, 0))
- fatal_exit("failed to read stats over cmd channel");
- if(len != (uint32_t)sizeof(*s))
- fatal_exit("stats on cmd channel wrong length %d %d",
- (int)len, (int)sizeof(*s));
- memcpy(s, reply, (size_t)len);
- free(reply);
-}
-
-void server_stats_reply(struct worker* worker, int reset)
-{
- struct stats_info s;
- server_stats_compile(worker, &s, reset);
- verbose(VERB_ALGO, "write stats replymsg");
- if(!tube_write_msg(worker->daemon->workers[0]->cmd,
- (uint8_t*)&s, sizeof(s), 0))
- fatal_exit("could not write stat values over cmd channel");
-}
-
-void server_stats_add(struct stats_info* total, struct stats_info* a)
-{
- total->svr.num_queries += a->svr.num_queries;
- total->svr.num_queries_ip_ratelimited += a->svr.num_queries_ip_ratelimited;
- total->svr.num_queries_missed_cache += a->svr.num_queries_missed_cache;
- total->svr.num_queries_prefetch += a->svr.num_queries_prefetch;
- total->svr.sum_query_list_size += a->svr.sum_query_list_size;
-#ifdef USE_DNSCRYPT
- total->svr.num_query_dnscrypt_crypted += a->svr.num_query_dnscrypt_crypted;
- total->svr.num_query_dnscrypt_cert += a->svr.num_query_dnscrypt_cert;
- total->svr.num_query_dnscrypt_cleartext += \
- a->svr.num_query_dnscrypt_cleartext;
- total->svr.num_query_dnscrypt_crypted_malformed += \
- a->svr.num_query_dnscrypt_crypted_malformed;
-#endif
- /* the max size reached is upped to higher of both */
- 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.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.zero_ttl_responses += a->svr.zero_ttl_responses;
- total->svr.ans_secure += a->svr.ans_secure;
- total->svr.ans_bogus += a->svr.ans_bogus;
- total->svr.rrset_bogus += a->svr.rrset_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<STATS_QTYPE_NUM; i++)
- total->svr.qtype[i] += a->svr.qtype[i];
- for(i=0; i<STATS_QCLASS_NUM; i++)
- total->svr.qclass[i] += a->svr.qclass[i];
- for(i=0; i<STATS_OPCODE_NUM; i++)
- total->svr.qopcode[i] += a->svr.qopcode[i];
- for(i=0; i<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];
- }
-
- 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;
- timeval_add(&total->mesh_replies_sum_wait, &a->mesh_replies_sum_wait);
- /* 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 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 < STATS_QTYPE_NUM)
- stats->qtype[qtype]++;
- else stats->qtype_big++;
- if(qclass < 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(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 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 ++;
- }
-}