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tweaks to make more C-like and quieten down if desired; plus additional output at end

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This commit is contained in:
Paul Davis 2015-01-20 16:17:53 -05:00
parent 168c4e9bc6
commit 752d837ddc
1 changed files with 32 additions and 23 deletions
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55
tools/readtest.c
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@ -1,4 +1,4 @@
/* gcc -o readtest readtest.c `pkg-config --cflags --libs glib-2.0` */
/* gcc -o readtest readtest.c `pkg-config --cflags --libs glib-2.0` -lm */
#include <stdlib.h>
#include <errno.h>
@ -8,7 +8,7 @@
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <stdbool.h>
#include <math.h>
#include <glib.h>
@ -30,11 +30,11 @@ int
main (int argc, char* argv[])
{
int* files;
char optstring[] = "b:Dl:";
char optstring[] = "b:Dl:q";
uint32_t block_size = 64 * 1024 * 4;
int max_files = -1;
#ifdef __APPLE__
bool direct = false;
int direct = 0;
#endif
const struct option longopts[] = {
{ "blocksize", 1, 0, 'b' },
@ -49,30 +49,34 @@ main (int argc, char* argv[])
int flags = O_RDONLY;
int n = 0;
int nfiles = 0;
int quiet = 0;
while (1) {
if ((c = getopt_long (argc, argv, optstring, longopts, &option_index)) == -1) {
break;
}
switch (c) {
case 'b':
block_size = atoi (optarg);
break;
case 'l':
max_files = atoi (optarg);
break;
case 'D':
case 'b':
block_size = atoi (optarg);
break;
case 'l':
max_files = atoi (optarg);
break;
case 'D':
#ifdef __APPLE__
direct = true;
direct = 1;
#endif
break;
default:
usage ();
return 0;
break;
case 'q':
quiet = 1;
break;
default:
usage ();
return 0;
}
}
if (optind < argc) {
name_template = argv[optind];
} else {
@ -101,8 +105,10 @@ main (int argc, char* argv[])
return 1;
}
printf ("Discovered %d files using %s\n", n, name_template);
if (!quiet) {
printf ("Discovered %d files using %s\n", n, name_template);
}
nfiles = n;
files = (int *) malloc (sizeof (int) * nfiles);
@ -138,7 +144,7 @@ main (int argc, char* argv[])
double max_elapsed = 0;
double total_time = 0;
while (true) {
while (1) {
gint64 before;
before = g_get_monotonic_time();
@ -154,8 +160,10 @@ main (int argc, char* argv[])
gint64 elapsed = g_get_monotonic_time() - before;
double bandwidth = ((nfiles * block_size)/1048576.0) / (elapsed/1000000.0);
printf ("BW @ %lu %.3f seconds bandwidth %.4f MB/sec\n", (long unsigned int)_read, elapsed/1000000.0, bandwidth);
if (!quiet) {
printf ("BW @ %lu %.3f seconds bandwidth %.4f MB/sec\n", (long unsigned int)_read, elapsed/1000000.0, bandwidth);
}
total_time += elapsed;
if (elapsed > max_elapsed) {
@ -169,6 +177,7 @@ out:
double bandwidth = ((nfiles * _read)/1048576.0) / (total_time/1000000.0);
double min_throughput = ((nfiles * block_size)/1048576.0) / (max_elapsed/1000000.0);
printf ("Min: %.4f MB/sec Avg: %.4f MB/sec || Max: %.3f sec \n", min_throughput, bandwidth, max_elapsed/1000000.0);
printf ("Max Track count: %d @ 48000SPS\n", (int) floor(1048576.0 * bandwidth / (4 * 48000.)));
}
return 0;