diff options
Diffstat (limited to 'regressions/ck_fifo/benchmark/latency.c')
| -rw-r--r-- | regressions/ck_fifo/benchmark/latency.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/regressions/ck_fifo/benchmark/latency.c b/regressions/ck_fifo/benchmark/latency.c new file mode 100644 index 0000000..267452f --- /dev/null +++ b/regressions/ck_fifo/benchmark/latency.c @@ -0,0 +1,157 @@ +/* + * Copyright 2011-2015 Samy Al Bahra. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <ck_fifo.h> +#include <ck_spinlock.h> +#include <inttypes.h> +#include <stdint.h> +#include <stdio.h> + +#include "../../common.h" + +#ifndef ENTRIES +#define ENTRIES 4096 +#endif + +#ifndef STEPS +#define STEPS 40000 +#endif + +int +main(void) +{ + ck_spinlock_fas_t mutex = CK_SPINLOCK_FAS_INITIALIZER; + void *r; + uint64_t s, e, a; + unsigned int i; + unsigned int j; + +#if defined(CK_F_FIFO_SPSC) + ck_fifo_spsc_t spsc_fifo; + ck_fifo_spsc_entry_t spsc_entry[ENTRIES]; + ck_fifo_spsc_entry_t spsc_stub; +#endif + +#if defined(CK_F_FIFO_MPMC) + ck_fifo_mpmc_t mpmc_fifo; + ck_fifo_mpmc_entry_t mpmc_entry[ENTRIES]; + ck_fifo_mpmc_entry_t mpmc_stub; + ck_fifo_mpmc_entry_t *garbage; +#endif + +#ifdef CK_F_FIFO_SPSC + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_spsc_init(&spsc_fifo, &spsc_stub); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) { + ck_spinlock_fas_lock(&mutex); + ck_fifo_spsc_enqueue(&spsc_fifo, spsc_entry + j, NULL); + ck_spinlock_fas_unlock(&mutex); + } + e = rdtsc(); + + a += e - s; + } + printf(" spinlock_enqueue: %16" PRIu64 "\n", a / STEPS / (sizeof(spsc_entry) / sizeof(*spsc_entry))); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_spsc_init(&spsc_fifo, &spsc_stub); + for (j = 0; j < ENTRIES; j++) + ck_fifo_spsc_enqueue(&spsc_fifo, spsc_entry + j, NULL); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) { + ck_spinlock_fas_lock(&mutex); + ck_fifo_spsc_dequeue(&spsc_fifo, &r); + ck_spinlock_fas_unlock(&mutex); + } + e = rdtsc(); + a += e - s; + } + printf(" spinlock_dequeue: %16" PRIu64 "\n", a / STEPS / (sizeof(spsc_entry) / sizeof(*spsc_entry))); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_spsc_init(&spsc_fifo, &spsc_stub); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_fifo_spsc_enqueue(&spsc_fifo, spsc_entry + j, NULL); + e = rdtsc(); + + a += e - s; + } + printf("ck_fifo_spsc_enqueue: %16" PRIu64 "\n", a / STEPS / (sizeof(spsc_entry) / sizeof(*spsc_entry))); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_spsc_init(&spsc_fifo, &spsc_stub); + for (j = 0; j < ENTRIES; j++) + ck_fifo_spsc_enqueue(&spsc_fifo, spsc_entry + j, NULL); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_fifo_spsc_dequeue(&spsc_fifo, &r); + e = rdtsc(); + a += e - s; + } + printf("ck_fifo_spsc_dequeue: %16" PRIu64 "\n", a / STEPS / (sizeof(spsc_entry) / sizeof(*spsc_entry))); +#endif + +#ifdef CK_F_FIFO_MPMC + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_mpmc_init(&mpmc_fifo, &mpmc_stub); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_fifo_mpmc_enqueue(&mpmc_fifo, mpmc_entry + j, NULL); + e = rdtsc(); + + a += e - s; + } + printf("ck_fifo_mpmc_enqueue: %16" PRIu64 "\n", a / STEPS / (sizeof(mpmc_entry) / sizeof(*mpmc_entry))); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_fifo_mpmc_init(&mpmc_fifo, &mpmc_stub); + for (j = 0; j < ENTRIES; j++) + ck_fifo_mpmc_enqueue(&mpmc_fifo, mpmc_entry + j, NULL); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_fifo_mpmc_dequeue(&mpmc_fifo, &r, &garbage); + e = rdtsc(); + a += e - s; + } + printf("ck_fifo_mpmc_dequeue: %16" PRIu64 "\n", a / STEPS / (sizeof(mpmc_entry) / sizeof(*mpmc_entry))); +#endif + + return 0; +} |