181 lines
4.1 KiB
C
181 lines
4.1 KiB
C
/*-
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* Public Domain 2008-2014 WiredTiger, Inc.
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*
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* This is free and unencumbered software released into the public domain.
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*
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* Anyone is free to copy, modify, publish, use, compile, sell, or
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* distribute this software, either in source code form or as a compiled
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* binary, for any purpose, commercial or non-commercial, and by any
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* means.
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*
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* In jurisdictions that recognize copyright laws, the author or authors
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* of this software dedicate any and all copyright interest in the
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* software to the public domain. We make this dedication for the benefit
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* of the public at large and to the detriment of our heirs and
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* successors. We intend this dedication to be an overt act of
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* relinquishment in perpetuity of all present and future rights to this
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* software under copyright law.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "thread.h"
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static void *fop(void *);
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static void print_stats(u_int);
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typedef struct {
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int bulk; /* bulk load */
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int ckpt; /* session.checkpoint */
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int create; /* session.create */
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int cursor; /* session.open_cursor */
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int drop; /* session.drop */
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int upgrade; /* session.upgrade */
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int verify; /* session.verify */
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} STATS;
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static STATS *run_stats;
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/*
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* r --
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* Return a 32-bit pseudo-random number.
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*
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* This is an implementation of George Marsaglia's multiply-with-carry pseudo-
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* random number generator. Computationally fast, with reasonable randomness
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* properties.
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*/
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static inline uint32_t
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r(void)
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{
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static uint32_t m_w = 0, m_z = 0;
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if (m_w == 0) {
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struct timeval t;
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(void)gettimeofday(&t, NULL);
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m_w = (uint32_t)t.tv_sec;
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m_z = (uint32_t)t.tv_usec;
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}
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m_z = 36969 * (m_z & 65535) + (m_z >> 16);
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m_w = 18000 * (m_w & 65535) + (m_w >> 16);
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return (m_z << 16) + (m_w & 65535);
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}
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int
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fop_start(u_int nthreads)
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{
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struct timeval start, stop;
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double seconds;
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pthread_t *tids;
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u_int i;
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int ret;
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void *thread_ret;
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/* Create statistics and thread structures. */
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if ((run_stats = calloc(
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(size_t)(nthreads), sizeof(*run_stats))) == NULL ||
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(tids = calloc((size_t)(nthreads), sizeof(*tids))) == NULL)
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die("calloc", errno);
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(void)gettimeofday(&start, NULL);
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/* Create threads. */
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for (i = 0; i < nthreads; ++i)
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if ((ret = pthread_create(
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&tids[i], NULL, fop, (void *)(uintptr_t)i)) != 0)
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die("pthread_create", ret);
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/* Wait for the threads. */
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for (i = 0; i < nthreads; ++i)
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(void)pthread_join(tids[i], &thread_ret);
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(void)gettimeofday(&stop, NULL);
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seconds = (stop.tv_sec - start.tv_sec) +
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(stop.tv_usec - start.tv_usec) * 1e-6;
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print_stats(nthreads);
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printf("timer: %.2lf seconds (%d ops/second)\n",
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seconds, (int)((nthreads * nops) / seconds));
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free(run_stats);
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free(tids);
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return (0);
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}
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/*
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* fop --
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* File operation function.
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*/
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static void *
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fop(void *arg)
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{
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STATS *s;
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u_int i;
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int id;
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id = (int)(uintptr_t)arg;
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sched_yield(); /* Get all the threads created. */
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s = &run_stats[id];
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for (i = 0; i < nops; ++i, sched_yield())
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switch (r() % 7) {
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case 0:
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++s->bulk;
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obj_bulk();
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break;
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case 1:
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++s->create;
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obj_create();
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break;
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case 2:
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++s->cursor;
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obj_cursor();
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break;
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case 3:
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++s->drop;
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obj_drop();
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break;
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case 4:
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++s->ckpt;
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obj_checkpoint();
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break;
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case 5:
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++s->upgrade;
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obj_upgrade();
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break;
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case 6:
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++s->verify;
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obj_verify();
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break;
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}
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return (NULL);
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}
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/*
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* print_stats --
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* Display file operation thread stats.
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*/
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static void
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print_stats(u_int nthreads)
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{
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STATS *s;
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u_int id;
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s = run_stats;
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for (id = 0; id < nthreads; ++id, ++s)
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printf(
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"%2d: bulk %3d, ckpt %3d, create %3d, cursor %3d, "
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"drop %3d, upg %3d, vrfy %3d\n",
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id, s->bulk, s->ckpt, s->create, s->cursor,
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s->drop, s->upgrade, s->verify);
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}
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