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/*
* Copyright (c) 2009 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Steven Dake (sdake@redhat.com)
*
* libqb is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* libqb is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libqb. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <qb/qbipcc.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <signal.h>
#include <qb/qbrb.h>
#include <qb/qbdefs.h>
#include <qb/qbutil.h>
#include <qb/qblog.h>
static qb_ringbuffer_t *rb = NULL;
#define ITERATIONS 100000
#define BUFFER_CHUNK_SIZE (50*50*10)
static struct timeval tv1, tv2, tv_elapsed;
#define timersub(a, b, result) \
do { \
(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
if ((result)->tv_usec < 0) { \
--(result)->tv_sec; \
(result)->tv_usec += 1000000; \
} \
} while (0)
static void sigterm_handler(int32_t num)
{
qb_log(LOG_INFO, "writer: %s(%d)\n", __func__, num);
qb_rb_close(rb);
exit(0);
}
static void bm_start(void)
{
gettimeofday(&tv1, NULL);
}
static void bm_finish(const char *operation, int32_t size)
{
float ops_per_sec;
float mbs_per_sec;
gettimeofday(&tv2, NULL);
timersub(&tv2, &tv1, &tv_elapsed);
ops_per_sec =
((float)ITERATIONS) / (((float)tv_elapsed.tv_sec) +
(((float)tv_elapsed.tv_usec) / 1000000.0));
mbs_per_sec =
((((float)ITERATIONS) * size) /
(((float)tv_elapsed.tv_sec) +
(((float)tv_elapsed.tv_usec) / 1000000.0))) / (1024.0 * 1024.0);
qb_log(LOG_INFO, "write size %d OPs/sec %9.3f MB/sec %9.3f",
size, ops_per_sec, mbs_per_sec);
}
static void bmc_connect(void)
{
rb = qb_rb_open("tester", BUFFER_CHUNK_SIZE * 3,
QB_RB_FLAG_SHARED_PROCESS, 0);
if (rb == NULL) {
qb_perror(LOG_ERR, "failed to create ringbuffer");
exit(1);
}
}
static char buffer[1024 * 1024];
static void bmc_send_nozc(size_t size)
{
ssize_t res = 0;
repeat_send:
res = qb_rb_chunk_write(rb, buffer, size);
if (res < size) {
goto repeat_send;
}
}
static void show_usage(const char *name)
{
printf("usage: \n");
printf("%s <options>\n", name);
printf("\n");
printf(" options:\n");
printf("\n");
printf(" -n non-blocking ipc (default blocking)\n");
printf(" -v verbose\n");
printf(" -h show this help text\n");
printf("\n");
}
int32_t main(int32_t argc, char *argv[])
{
const char *options = "vh";
int32_t opt;
int32_t i, j;
int32_t size;
int32_t verbose = 0;
while ((opt = getopt(argc, argv, options)) != -1) {
switch (opt) {
case 'v':
verbose++;
break;
case 'h':
default:
show_usage(argv[0]);
exit(0);
break;
}
}
signal(SIGINT, sigterm_handler);
qb_log_init("rbwriter", LOG_USER, LOG_EMERG);
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);
qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD,
QB_LOG_FILTER_FILE, "*", LOG_INFO + verbose);
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
bmc_connect();
for (j = 1; j < 49; j++) {
bm_start();
size = 7 * (j + 1) * j;
if (size > BUFFER_CHUNK_SIZE) {
size = BUFFER_CHUNK_SIZE;
}
for (i = 0; i < ITERATIONS; i++) {
bmc_send_nozc(size);
}
bm_finish("ringbuffer", size);
}
qb_rb_close(rb);
return EXIT_SUCCESS;
}
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