2 * Copyright (c) 2011 Martin Sucha
3 * Copyright (c) 2019 Vojtech Horky
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 /** @addtogroup hbench
35 #include <str_error.h>
38 #include "../hbench.h"
41 * Note that while this benchmark tries to measure speed of direct
42 * read, it rather measures speed of FS cache as it is highly probable
43 * that the corresponding blocks would be cached after first run.
45 static bool runner(stopwatch_t
*stopwatch
, uint64_t size
,
46 char *error
, size_t error_size
)
48 const char *path
= bench_param_get("dirname", "/");
50 stopwatch_start(stopwatch
);
51 for (uint64_t i
= 0; i
< size
; i
++) {
52 DIR *dir
= opendir(path
);
54 snprintf(error
, error_size
, "failed to open %s for reading: %s",
55 path
, str_error(errno
));
60 while ((dp
= readdir(dir
))) {
66 stopwatch_stop(stopwatch
);
71 benchmark_t benchmark_dir_read
= {
73 .desc
= "Read contents of a directory (use 'dirname' param to alter the default).",