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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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 "spdk/stdinc.h"
#include "spdk/env.h"
#include "spdk/event.h"
#include "spdk_internal/event.h"
#include "spdk/log.h"
#include "spdk/string.h"
static uint64_t g_tsc_rate;
static uint64_t g_tsc_us_rate;
static uint64_t g_tsc_end;
static int g_time_in_sec;
static uint64_t *call_count;
static bool g_app_stopped = false;
static void
submit_new_event(void *arg1, void *arg2)
{
struct spdk_event *event;
static __thread uint32_t next_lcore = UINT32_MAX;
if (spdk_get_ticks() > g_tsc_end) {
if (__sync_bool_compare_and_swap(&g_app_stopped, false, true)) {
spdk_app_stop(0);
}
return;
}
if (next_lcore == UINT32_MAX) {
next_lcore = spdk_env_get_next_core(spdk_env_get_current_core());
if (next_lcore == UINT32_MAX) {
next_lcore = spdk_env_get_first_core();
}
}
call_count[next_lcore]++;
event = spdk_event_allocate(next_lcore, submit_new_event, NULL, NULL);
spdk_event_call(event);
}
static void
event_work_fn(void *arg1, void *arg2)
{
submit_new_event(NULL, NULL);
submit_new_event(NULL, NULL);
submit_new_event(NULL, NULL);
submit_new_event(NULL, NULL);
}
static void
event_perf_start(void *arg1)
{
uint32_t i;
call_count = calloc(spdk_env_get_last_core() + 1, sizeof(*call_count));
if (call_count == NULL) {
fprintf(stderr, "call_count allocation failed\n");
spdk_app_stop(1);
return;
}
g_tsc_rate = spdk_get_ticks_hz();
g_tsc_us_rate = g_tsc_rate / (1000 * 1000);
g_tsc_end = spdk_get_ticks() + g_time_in_sec * g_tsc_rate;
printf("Running I/O for %d seconds...", g_time_in_sec);
fflush(stdout);
SPDK_ENV_FOREACH_CORE(i) {
spdk_event_call(spdk_event_allocate(i, event_work_fn,
NULL, NULL));
}
}
static void
usage(char *program_name)
{
printf("%s options\n", program_name);
printf("\t[-m core mask for distributing I/O submission/completion work\n");
printf("\t\t(default: 0x1 - use core 0 only)]\n");
printf("\t[-t time in seconds]\n");
}
static void
performance_dump(int io_time)
{
uint32_t i;
if (call_count == NULL) {
return;
}
printf("\n");
SPDK_ENV_FOREACH_CORE(i) {
printf("lcore %2d: %8ju\n", i, call_count[i] / g_time_in_sec);
}
fflush(stdout);
free(call_count);
}
int
main(int argc, char **argv)
{
struct spdk_app_opts opts = {};
int op;
int rc = 0;
opts.name = "event_perf";
g_time_in_sec = 0;
while ((op = getopt(argc, argv, "m:t:")) != -1) {
switch (op) {
case 'm':
opts.reactor_mask = optarg;
break;
case 't':
g_time_in_sec = spdk_strtol(optarg, 10);
if (g_time_in_sec < 0) {
fprintf(stderr, "Invalid run time\n");
return g_time_in_sec;
}
break;
default:
usage(argv[0]);
exit(1);
}
}
if (!g_time_in_sec) {
usage(argv[0]);
exit(1);
}
printf("Running I/O for %d seconds...", g_time_in_sec);
fflush(stdout);
rc = spdk_app_start(&opts, event_perf_start, NULL);
spdk_app_fini();
performance_dump(g_time_in_sec);
printf("done.\n");
return rc;
}
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