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Diffstat (limited to 'app/test/test_ring_perf.c')
| -rw-r--r-- | app/test/test_ring_perf.c | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/app/test/test_ring_perf.c b/app/test/test_ring_perf.c deleted file mode 100644 index 320c20cd..00000000 --- a/app/test/test_ring_perf.c +++ /dev/null @@ -1,417 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * 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 Intel Corporation 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 - * OWNER 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. - */ - - -#include <stdio.h> -#include <inttypes.h> -#include <rte_ring.h> -#include <rte_cycles.h> -#include <rte_launch.h> - -#include "test.h" - -/* - * Ring - * ==== - * - * Measures performance of various operations using rdtsc - * * Empty ring dequeue - * * Enqueue/dequeue of bursts in 1 threads - * * Enqueue/dequeue of bursts in 2 threads - */ - -#define RING_NAME "RING_PERF" -#define RING_SIZE 4096 -#define MAX_BURST 32 - -/* - * the sizes to enqueue and dequeue in testing - * (marked volatile so they won't be seen as compile-time constants) - */ -static const volatile unsigned bulk_sizes[] = { 8, 32 }; - -/* The ring structure used for tests */ -static struct rte_ring *r; - -struct lcore_pair { - unsigned c1, c2; -}; - -static volatile unsigned lcore_count = 0; - -/**** Functions to analyse our core mask to get cores for different tests ***/ - -static int -get_two_hyperthreads(struct lcore_pair *lcp) -{ - unsigned id1, id2; - unsigned c1, c2, s1, s2; - RTE_LCORE_FOREACH(id1) { - /* inner loop just re-reads all id's. We could skip the first few - * elements, but since number of cores is small there is little point - */ - RTE_LCORE_FOREACH(id2) { - if (id1 == id2) - continue; - c1 = lcore_config[id1].core_id; - c2 = lcore_config[id2].core_id; - s1 = lcore_config[id1].socket_id; - s2 = lcore_config[id2].socket_id; - if ((c1 == c2) && (s1 == s2)){ - lcp->c1 = id1; - lcp->c2 = id2; - return 0; - } - } - } - return 1; -} - -static int -get_two_cores(struct lcore_pair *lcp) -{ - unsigned id1, id2; - unsigned c1, c2, s1, s2; - RTE_LCORE_FOREACH(id1) { - RTE_LCORE_FOREACH(id2) { - if (id1 == id2) - continue; - c1 = lcore_config[id1].core_id; - c2 = lcore_config[id2].core_id; - s1 = lcore_config[id1].socket_id; - s2 = lcore_config[id2].socket_id; - if ((c1 != c2) && (s1 == s2)){ - lcp->c1 = id1; - lcp->c2 = id2; - return 0; - } - } - } - return 1; -} - -static int -get_two_sockets(struct lcore_pair *lcp) -{ - unsigned id1, id2; - unsigned s1, s2; - RTE_LCORE_FOREACH(id1) { - RTE_LCORE_FOREACH(id2) { - if (id1 == id2) - continue; - s1 = lcore_config[id1].socket_id; - s2 = lcore_config[id2].socket_id; - if (s1 != s2){ - lcp->c1 = id1; - lcp->c2 = id2; - return 0; - } - } - } - return 1; -} - -/* Get cycle counts for dequeuing from an empty ring. Should be 2 or 3 cycles */ -static void -test_empty_dequeue(void) -{ - const unsigned iter_shift = 26; - const unsigned iterations = 1<<iter_shift; - unsigned i = 0; - void *burst[MAX_BURST]; - - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - rte_ring_sc_dequeue_bulk(r, burst, bulk_sizes[0]); - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t mc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - rte_ring_mc_dequeue_bulk(r, burst, bulk_sizes[0]); - const uint64_t mc_end = rte_rdtsc(); - - printf("SC empty dequeue: %.2F\n", - (double)(sc_end-sc_start) / iterations); - printf("MC empty dequeue: %.2F\n", - (double)(mc_end-mc_start) / iterations); -} - -/* - * for the separate enqueue and dequeue threads they take in one param - * and return two. Input = burst size, output = cycle average for sp/sc & mp/mc - */ -struct thread_params { - unsigned size; /* input value, the burst size */ - double spsc, mpmc; /* output value, the single or multi timings */ -}; - -/* - * Function that uses rdtsc to measure timing for ring enqueue. Needs pair - * thread running dequeue_bulk function - */ -static int -enqueue_bulk(void *p) -{ - const unsigned iter_shift = 23; - const unsigned iterations = 1<<iter_shift; - struct thread_params *params = p; - const unsigned size = params->size; - unsigned i; - void *burst[MAX_BURST] = {0}; - - if ( __sync_add_and_fetch(&lcore_count, 1) != 2 ) - while(lcore_count != 2) - rte_pause(); - - const uint64_t sp_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - while (rte_ring_sp_enqueue_bulk(r, burst, size) != 0) - rte_pause(); - const uint64_t sp_end = rte_rdtsc(); - - const uint64_t mp_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - while (rte_ring_mp_enqueue_bulk(r, burst, size) != 0) - rte_pause(); - const uint64_t mp_end = rte_rdtsc(); - - params->spsc = ((double)(sp_end - sp_start))/(iterations*size); - params->mpmc = ((double)(mp_end - mp_start))/(iterations*size); - return 0; -} - -/* - * Function that uses rdtsc to measure timing for ring dequeue. Needs pair - * thread running enqueue_bulk function - */ -static int -dequeue_bulk(void *p) -{ - const unsigned iter_shift = 23; - const unsigned iterations = 1<<iter_shift; - struct thread_params *params = p; - const unsigned size = params->size; - unsigned i; - void *burst[MAX_BURST] = {0}; - - if ( __sync_add_and_fetch(&lcore_count, 1) != 2 ) - while(lcore_count != 2) - rte_pause(); - - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - while (rte_ring_sc_dequeue_bulk(r, burst, size) != 0) - rte_pause(); - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t mc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) - while (rte_ring_mc_dequeue_bulk(r, burst, size) != 0) - rte_pause(); - const uint64_t mc_end = rte_rdtsc(); - - params->spsc = ((double)(sc_end - sc_start))/(iterations*size); - params->mpmc = ((double)(mc_end - mc_start))/(iterations*size); - return 0; -} - -/* - * Function that calls the enqueue and dequeue bulk functions on pairs of cores. - * used to measure ring perf between hyperthreads, cores and sockets. - */ -static void -run_on_core_pair(struct lcore_pair *cores, - lcore_function_t f1, lcore_function_t f2) -{ - struct thread_params param1 = {0}, param2 = {0}; - unsigned i; - for (i = 0; i < sizeof(bulk_sizes)/sizeof(bulk_sizes[0]); i++) { - lcore_count = 0; - param1.size = param2.size = bulk_sizes[i]; - if (cores->c1 == rte_get_master_lcore()) { - rte_eal_remote_launch(f2, ¶m2, cores->c2); - f1(¶m1); - rte_eal_wait_lcore(cores->c2); - } else { - rte_eal_remote_launch(f1, ¶m1, cores->c1); - rte_eal_remote_launch(f2, ¶m2, cores->c2); - rte_eal_wait_lcore(cores->c1); - rte_eal_wait_lcore(cores->c2); - } - printf("SP/SC bulk enq/dequeue (size: %u): %.2F\n", bulk_sizes[i], - param1.spsc + param2.spsc); - printf("MP/MC bulk enq/dequeue (size: %u): %.2F\n", bulk_sizes[i], - param1.mpmc + param2.mpmc); - } -} - -/* - * Test function that determines how long an enqueue + dequeue of a single item - * takes on a single lcore. Result is for comparison with the bulk enq+deq. - */ -static void -test_single_enqueue_dequeue(void) -{ - const unsigned iter_shift = 24; - const unsigned iterations = 1<<iter_shift; - unsigned i = 0; - void *burst = NULL; - - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_sp_enqueue(r, burst); - rte_ring_sc_dequeue(r, &burst); - } - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t mc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_mp_enqueue(r, burst); - rte_ring_mc_dequeue(r, &burst); - } - const uint64_t mc_end = rte_rdtsc(); - - printf("SP/SC single enq/dequeue: %"PRIu64"\n", - (sc_end-sc_start) >> iter_shift); - printf("MP/MC single enq/dequeue: %"PRIu64"\n", - (mc_end-mc_start) >> iter_shift); -} - -/* - * Test that does both enqueue and dequeue on a core using the burst() API calls - * instead of the bulk() calls used in other tests. Results should be the same - * as for the bulk function called on a single lcore. - */ -static void -test_burst_enqueue_dequeue(void) -{ - const unsigned iter_shift = 23; - const unsigned iterations = 1<<iter_shift; - unsigned sz, i = 0; - void *burst[MAX_BURST] = {0}; - - for (sz = 0; sz < sizeof(bulk_sizes)/sizeof(bulk_sizes[0]); sz++) { - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_sp_enqueue_burst(r, burst, bulk_sizes[sz]); - rte_ring_sc_dequeue_burst(r, burst, bulk_sizes[sz]); - } - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t mc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_mp_enqueue_burst(r, burst, bulk_sizes[sz]); - rte_ring_mc_dequeue_burst(r, burst, bulk_sizes[sz]); - } - const uint64_t mc_end = rte_rdtsc(); - - uint64_t mc_avg = ((mc_end-mc_start) >> iter_shift) / bulk_sizes[sz]; - uint64_t sc_avg = ((sc_end-sc_start) >> iter_shift) / bulk_sizes[sz]; - - printf("SP/SC burst enq/dequeue (size: %u): %"PRIu64"\n", bulk_sizes[sz], - sc_avg); - printf("MP/MC burst enq/dequeue (size: %u): %"PRIu64"\n", bulk_sizes[sz], - mc_avg); - } -} - -/* Times enqueue and dequeue on a single lcore */ -static void -test_bulk_enqueue_dequeue(void) -{ - const unsigned iter_shift = 23; - const unsigned iterations = 1<<iter_shift; - unsigned sz, i = 0; - void *burst[MAX_BURST] = {0}; - - for (sz = 0; sz < sizeof(bulk_sizes)/sizeof(bulk_sizes[0]); sz++) { - const uint64_t sc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_sp_enqueue_bulk(r, burst, bulk_sizes[sz]); - rte_ring_sc_dequeue_bulk(r, burst, bulk_sizes[sz]); - } - const uint64_t sc_end = rte_rdtsc(); - - const uint64_t mc_start = rte_rdtsc(); - for (i = 0; i < iterations; i++) { - rte_ring_mp_enqueue_bulk(r, burst, bulk_sizes[sz]); - rte_ring_mc_dequeue_bulk(r, burst, bulk_sizes[sz]); - } - const uint64_t mc_end = rte_rdtsc(); - - double sc_avg = ((double)(sc_end-sc_start) / - (iterations * bulk_sizes[sz])); - double mc_avg = ((double)(mc_end-mc_start) / - (iterations * bulk_sizes[sz])); - - printf("SP/SC bulk enq/dequeue (size: %u): %.2F\n", bulk_sizes[sz], - sc_avg); - printf("MP/MC bulk enq/dequeue (size: %u): %.2F\n", bulk_sizes[sz], - mc_avg); - } -} - -static int -test_ring_perf(void) -{ - struct lcore_pair cores; - r = rte_ring_create(RING_NAME, RING_SIZE, rte_socket_id(), 0); - if (r == NULL && (r = rte_ring_lookup(RING_NAME)) == NULL) - return -1; - - printf("### Testing single element and burst enq/deq ###\n"); - test_single_enqueue_dequeue(); - test_burst_enqueue_dequeue(); - - printf("\n### Testing empty dequeue ###\n"); - test_empty_dequeue(); - - printf("\n### Testing using a single lcore ###\n"); - test_bulk_enqueue_dequeue(); - - if (get_two_hyperthreads(&cores) == 0) { - printf("\n### Testing using two hyperthreads ###\n"); - run_on_core_pair(&cores, enqueue_bulk, dequeue_bulk); - } - if (get_two_cores(&cores) == 0) { - printf("\n### Testing using two physical cores ###\n"); - run_on_core_pair(&cores, enqueue_bulk, dequeue_bulk); - } - if (get_two_sockets(&cores) == 0) { - printf("\n### Testing using two NUMA nodes ###\n"); - run_on_core_pair(&cores, enqueue_bulk, dequeue_bulk); - } - return 0; -} - -REGISTER_TEST_COMMAND(ring_perf_autotest, test_ring_perf); |