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A simple file write performance test

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px4dev 2012-09-13 21:42:51 -07:00
parent a294ee2b87
commit d7fb2175eb
3 changed files with 78 additions and 0 deletions
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1
apps/px4/tests/tests.h
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@ -96,5 +96,6 @@ extern int test_time(int argc, char *argv[]);
extern int test_uart_console(int argc, char *argv[]);
extern int test_jig_voltages(int argc, char *argv[]);
extern int test_param(int argc, char *argv[]);
extern int test_file(int argc, char *argv[]);
#endif /* __APPS_PX4_TESTS_H */

76
apps/px4/tests/tests_file.c Normal file
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@ -0,0 +1,76 @@
/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. 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.
* 3. Neither the name PX4 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.
*
****************************************************************************/
/**
* @file tests_file.c
*
* File write test.
*/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <systemlib/err.h>
#include <systemlib/perf_counter.h>
#include <string.h>
#include <arch/board/up_hrt.h>
#include "tests.h"
int
test_file(int argc, char *argv[])
{
uint8_t buf[512];
hrt_abstime start, end;
perf_counter_t wperf = perf_alloc(PC_ELAPSED, "SD writes");
int fd = open("/fs/microsd/testfile", O_TRUNC | O_WRONLY | O_CREAT);
memset(buf, 0, sizeof(buf));
start = hrt_absolute_time();
for (unsigned i = 0; i < 1024; i++) {
perf_begin(wperf);
write(fd, buf, sizeof(buf));
perf_end(wperf);
}
end = hrt_absolute_time();
close(fd);
warnx("512KiB in %llu microseconds", end - start);
perf_print_counter(wperf);
perf_free(wperf);
return 0;
}

1
apps/px4/tests/tests_main.c
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@ -109,6 +109,7 @@ struct {
{"all", test_all, OPT_NOALLTEST | OPT_NOJIGTEST, 0},
{"jig", test_jig, OPT_NOJIGTEST | OPT_NOALLTEST, 0},
{"param", test_param, 0, 0},
{"file", test_file, 0, 0},
{"help", test_help, OPT_NOALLTEST | OPT_NOHELP | OPT_NOJIGTEST, 0},
{NULL, NULL, 0, 0}
};