diff options
Diffstat (limited to 'regressions/ck_hp/benchmark/fifo_latency.c')
| -rw-r--r-- | regressions/ck_hp/benchmark/fifo_latency.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/regressions/ck_hp/benchmark/fifo_latency.c b/regressions/ck_hp/benchmark/fifo_latency.c new file mode 100644 index 0000000..77ee2a7 --- /dev/null +++ b/regressions/ck_hp/benchmark/fifo_latency.c @@ -0,0 +1,94 @@ +/* + * 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_hp.h> +#include <ck_hp_fifo.h> +#include <inttypes.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> + +#include "../../common.h" + +#ifndef ENTRIES +#define ENTRIES 4096 +#endif + +#ifndef STEPS +#define STEPS 40000 +#endif + +static ck_hp_fifo_t fifo; +static ck_hp_t fifo_hp; + +int +main(void) +{ + void *r; + uint64_t s, e, a; + unsigned int i; + unsigned int j; + ck_hp_fifo_entry_t hp_entry[ENTRIES]; + ck_hp_fifo_entry_t hp_stub; + ck_hp_record_t record; + + ck_hp_init(&fifo_hp, CK_HP_FIFO_SLOTS_COUNT, 1000000, NULL); + + r = malloc(CK_HP_FIFO_SLOTS_SIZE); + if (r == NULL) { + ck_error("ERROR: Failed to allocate slots.\n"); + } + ck_hp_register(&fifo_hp, &record, r); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_hp_fifo_init(&fifo, &hp_stub); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_hp_fifo_enqueue_mpmc(&record, &fifo, hp_entry + j, NULL); + e = rdtsc(); + + a += e - s; + } + printf("ck_hp_fifo_enqueue_mpmc: %16" PRIu64 "\n", a / STEPS / ENTRIES); + + a = 0; + for (i = 0; i < STEPS; i++) { + ck_hp_fifo_init(&fifo, &hp_stub); + for (j = 0; j < ENTRIES; j++) + ck_hp_fifo_enqueue_mpmc(&record, &fifo, hp_entry + j, NULL); + + s = rdtsc(); + for (j = 0; j < ENTRIES; j++) + ck_hp_fifo_dequeue_mpmc(&record, &fifo, &r); + e = rdtsc(); + a += e - s; + } + printf("ck_hp_fifo_dequeue_mpmc: %16" PRIu64 "\n", a / STEPS / ENTRIES); + + return 0; +} |