diff options
Diffstat (limited to 'regressions/ck_sequence/benchmark/ck_sequence.c')
| -rw-r--r-- | regressions/ck_sequence/benchmark/ck_sequence.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/regressions/ck_sequence/benchmark/ck_sequence.c b/regressions/ck_sequence/benchmark/ck_sequence.c new file mode 100644 index 0000000..f720c31 --- /dev/null +++ b/regressions/ck_sequence/benchmark/ck_sequence.c @@ -0,0 +1,91 @@ +/* + * Copyright 2013-2015 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_cc.h> +#include <ck_sequence.h> +#include <errno.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <inttypes.h> + +#include "../../common.h" + +#ifndef STEPS +#define STEPS (65536 * 64) +#endif + +static ck_sequence_t seqlock CK_CC_CACHELINE = CK_SEQUENCE_INITIALIZER; + +int +main(void) +{ + unsigned int i = 0; + unsigned int version; + uint64_t a, s; + + /* Read-side latency. */ + a = 0; + for (i = 0; i < STEPS / 4; i++) { + s = rdtsc(); + ck_sequence_read_retry(&seqlock, ck_sequence_read_begin(&seqlock)); + ck_sequence_read_retry(&seqlock, ck_sequence_read_begin(&seqlock)); + ck_sequence_read_retry(&seqlock, ck_sequence_read_begin(&seqlock)); + ck_sequence_read_retry(&seqlock, ck_sequence_read_begin(&seqlock)); + a += rdtsc() - s; + } + printf("read: %" PRIu64 "\n", a / STEPS); + + a = 0; + for (i = 0; i < STEPS / 4; i++) { + s = rdtsc(); + CK_SEQUENCE_READ(&seqlock, &version); + CK_SEQUENCE_READ(&seqlock, &version); + CK_SEQUENCE_READ(&seqlock, &version); + CK_SEQUENCE_READ(&seqlock, &version); + a += rdtsc() - s; + } + printf("READ %" PRIu64 "\n", a / STEPS); + + /* Write-side latency. */ + a = 0; + for (i = 0; i < STEPS / 4; i++) { + s = rdtsc(); + ck_sequence_write_begin(&seqlock); + ck_sequence_write_end(&seqlock); + ck_sequence_write_begin(&seqlock); + ck_sequence_write_end(&seqlock); + ck_sequence_write_begin(&seqlock); + ck_sequence_write_end(&seqlock); + ck_sequence_write_begin(&seqlock); + ck_sequence_write_end(&seqlock); + a += rdtsc() - s; + } + printf("write: %" PRIu64 "\n", a / STEPS); + + return 0; +} + |