ceph/src/spdk/test/event/reactor_perf/reactor_perf.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) Intel Corporation.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include "spdk/stdinc.h"
  35
  36 #include "spdk/env.h"
  37 #include "spdk/event.h"
  38 #include "spdk/string.h"
  39 #include "spdk/thread.h"
  40
  41 static int g_time_in_sec;
  42 static int g_queue_depth;
  43 static struct spdk_poller *g_test_end_poller;
  44 static uint64_t g_call_count = 0;
  45
  46 static int
  47 __test_end(void *arg)
  48 {
  49         printf("test_end\n");
  50         spdk_poller_unregister(&g_test_end_poller);
  51         spdk_app_stop(0);
  52         return -1;
  53 }
  54
  55 static void
  56 __submit_next(void *arg1, void *arg2)
  57 {
  58         struct spdk_event *event;
  59
  60         g_call_count++;
  61
  62         event = spdk_event_allocate(spdk_env_get_current_core(),
  63                                     __submit_next, NULL, NULL);
  64         spdk_event_call(event);
  65 }
  66
  67 static void
  68 test_start(void *arg1)
  69 {
  70         int i;
  71
  72         printf("test_start\n");
  73
  74         /* Register a poller that will stop the test after the time has elapsed. */
  75         g_test_end_poller = SPDK_POLLER_REGISTER(__test_end, NULL,
  76                             g_time_in_sec * 1000000ULL);
  77
  78         for (i = 0; i < g_queue_depth; i++) {
  79                 __submit_next(NULL, NULL);
  80         }
  81 }
  82
  83 static void
  84 test_cleanup(void)
  85 {
  86         printf("test_abort\n");
  87
  88         spdk_poller_unregister(&g_test_end_poller);
  89         spdk_app_stop(0);
  90 }
  91
  92 static void
  93 usage(const char *program_name)
  94 {
  95         printf("%s options\n", program_name);
  96         printf("\t[-q Queue depth (default: 1)]\n");
  97         printf("\t[-t time in seconds]\n");
  98 }
  99
 100 int
 101 main(int argc, char **argv)
 102 {
 103         struct spdk_app_opts opts;
 104         int op;
 105         int rc;
 106         long int val;
 107
 108         spdk_app_opts_init(&opts);
 109         opts.name = "reactor_perf";
 110
 111         g_time_in_sec = 0;
 112         g_queue_depth = 1;
 113
 114         while ((op = getopt(argc, argv, "q:t:")) != -1) {
 115                 if (op == '?') {
 116                         usage(argv[0]);
 117                         exit(1);
 118                 }
 119                 val = spdk_strtol(optarg, 10);
 120                 if (val < 0) {
 121                         fprintf(stderr, "Converting a string to integer failed\n");
 122                         exit(1);
 123                 }
 124                 switch (op) {
 125                 case 'q':
 126                         g_queue_depth = val;
 127                         break;
 128                 case 't':
 129                         g_time_in_sec = val;
 130                         break;
 131                 default:
 132                         usage(argv[0]);
 133                         exit(1);
 134                 }
 135         }
 136
 137         if (!g_time_in_sec) {
 138                 usage(argv[0]);
 139                 exit(1);
 140         }
 141
 142         opts.shutdown_cb = test_cleanup;
 143
 144         rc = spdk_app_start(&opts, test_start, NULL);
 145
 146         spdk_app_fini();
 147
 148         printf("Performance: %8ju events per second\n", g_call_count / g_time_in_sec);
 149
 150         return rc;
 151 }