/* * BIRD -- Table-to-Table Routing Protocol a.k.a Pipe * * (c) 1999--2000 Martin Mares * * Can be freely distributed and used under the terms of the GNU GPL. */ /** * DOC: Perf * * Run this protocol to measure route import and export times. * Generates a load of dummy routes and measures time to import. */ #undef LOCAL_DEBUG #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" #include "nest/rt.h" #include "nest/cli.h" #include "conf/conf.h" #include "filter/filter.h" #include "lib/string.h" #include "perf.h" #include #include #define PLOG(msg, ...) log(L_INFO "Perf %s %s " msg, BIRD_VERSION, p->p.name, ##__VA_ARGS__) static inline void random_data(void *p, uint len) { uint ints = (len + sizeof(int) - 1) / sizeof(int); int *d = alloca(sizeof(uint) * ints); for (uint i=0; itv_sec - begin->tv_sec) * (s64) 1000000000 + end->tv_nsec - begin->tv_nsec; } static void perf_ifa_notify(struct proto *P, uint flags, struct ifa *ad) { struct perf_proto *p = (struct perf_proto *) P; if (ad->flags & IA_SECONDARY) return; if (p->ifa && p->ifa == ad && (flags & IF_CHANGE_DOWN)) { p->ifa = NULL; if (ev_active(p->loop)) ev_postpone(p->loop); return; } if (!p->ifa && (flags & IF_CHANGE_UP)) { p->ifa = ad; ev_schedule(p->loop); PLOG("starting"); return; } } static void perf_loop(void *data) { struct proto *P = data; struct perf_proto *p = data; const uint N = 1U << p->exp; if (!p->run) { ASSERT(p->data == NULL); p->data = xmalloc(sizeof(struct perf_random_routes) * N); p->stop = 1; } ip_addr gw = random_gw(&p->ifa->prefix); struct timespec ts_begin, ts_generated, ts_update, ts_withdraw; clock_gettime(CLOCK_MONOTONIC, &ts_begin); for (uint i=0; idata[i].net)) = random_net_ip4(); if (!p->attrs_per_rte || !(i % p->attrs_per_rte)) { struct rta a0 = { .dest = RTD_UNICAST, .nh.iface = p->ifa->iface, .nh.gw = gw, .nh.weight = 1, }; ea_set_attr_u32(&a0.eattrs, &ea_gen_preference, 0, p->p.main_channel->preference); ea_set_attr_u32(&a0.eattrs, &ea_gen_source, 0, RTS_PERF); p->data[i].a = rta_lookup(&a0); } else p->data[i].a = rta_clone(p->data[i-1].a); } clock_gettime(CLOCK_MONOTONIC, &ts_generated); for (uint i=0; idata[i].a, .src = P->main_source, }; rte_update(P->main_channel, &(p->data[i].net), &e0, P->main_source); } clock_gettime(CLOCK_MONOTONIC, &ts_update); if (!p->keep) for (uint i=0; imain_channel, &(p->data[i].net), NULL, P->main_source); clock_gettime(CLOCK_MONOTONIC, &ts_withdraw); s64 gentime = timediff(&ts_begin, &ts_generated); s64 updatetime = timediff(&ts_generated, &ts_update); s64 withdrawtime = timediff(&ts_update, &ts_withdraw); if (updatetime NS >= p->threshold_min) PLOG("exp=%u times: gen=%ld update=%ld withdraw=%ld", p->exp, gentime, updatetime, withdrawtime); if (updatetime NS < p->threshold_max) p->stop = 0; if ((updatetime NS < p->threshold_min) || (++p->run == p->repeat)) { xfree(p->data); p->data = NULL; if (p->stop || (p->exp == p->to)) { PLOG("done with exp=%u", p->exp); return; } p->run = 0; p->exp++; } rt_schedule_prune(P->main_channel->table); ev_schedule(p->loop); } static void perf_rt_notify(struct proto *P, struct channel *c UNUSED, const net_addr *net UNUSED, struct rte *new UNUSED, const struct rte *old UNUSED) { struct perf_proto *p = (struct perf_proto *) P; p->exp++; return; } static void perf_feed_begin(struct channel *c, int initial UNUSED) { struct perf_proto *p = (struct perf_proto *) c->proto; p->run++; p->feed_begin = xmalloc(sizeof(struct timespec)); p->exp = 0; clock_gettime(CLOCK_MONOTONIC, p->feed_begin); } static void perf_feed_end(struct channel *c) { struct perf_proto *p = (struct perf_proto *) c->proto; struct timespec ts_end; clock_gettime(CLOCK_MONOTONIC, &ts_end); s64 feedtime = timediff(p->feed_begin, &ts_end); PLOG("feed n=%lu time=%lu", p->exp, feedtime); xfree(p->feed_begin); p->feed_begin = NULL; if (p->run < p->repeat) channel_request_feeding(c); else PLOG("feed done"); } static struct proto * perf_init(struct proto_config *CF) { struct proto *P = proto_new(CF); P->main_channel = proto_add_channel(P, proto_cf_main_channel(CF)); struct perf_proto *p = (struct perf_proto *) P; p->loop = ev_new_init(P->pool, perf_loop, p); struct perf_config *cf = (struct perf_config *) CF; p->threshold_min = cf->threshold_min; p->threshold_max = cf->threshold_max; p->from = cf->from; p->to = cf->to; p->repeat = cf->repeat; p->keep = cf->keep; p->mode = cf->mode; p->attrs_per_rte = cf->attrs_per_rte; switch (p->mode) { case PERF_MODE_IMPORT: P->ifa_notify = perf_ifa_notify; break; case PERF_MODE_EXPORT: P->rt_notify = perf_rt_notify; P->feed_begin = perf_feed_begin; P->feed_end = perf_feed_end; break; } return P; } static int perf_start(struct proto *P) { struct perf_proto *p = (struct perf_proto *) P; p->ifa = NULL; p->run = 0; p->exp = p->from; ASSERT(p->data == NULL); return PS_UP; } static int perf_reconfigure(struct proto *P UNUSED, struct proto_config *CF UNUSED) { return 0; } static void perf_copy_config(struct proto_config *dest UNUSED, struct proto_config *src UNUSED) { } struct protocol proto_perf = { .name = "Perf", .template = "perf%d", .channel_mask = NB_IP, .proto_size = sizeof(struct perf_proto), .config_size = sizeof(struct perf_config), .init = perf_init, .start = perf_start, .reconfigure = perf_reconfigure, .copy_config = perf_copy_config, }; void perf_build(void) { proto_build(&proto_perf); }