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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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47
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 <stdlib.h>
#include <errno.h> #include <errno.h>
@ -8,7 +8,7 @@
#include <string.h> #include <string.h>
#include <getopt.h> #include <getopt.h>
#include <fcntl.h> #include <fcntl.h>
#include <stdbool.h> #include <math.h>
#include <glib.h> #include <glib.h>
@ -30,11 +30,11 @@ int
main (int argc, char* argv[]) main (int argc, char* argv[])
{ {
int* files; int* files;
char optstring[] = "b:Dl:"; char optstring[] = "b:Dl:q";
uint32_t block_size = 64 * 1024 * 4; uint32_t block_size = 64 * 1024 * 4;
int max_files = -1; int max_files = -1;
#ifdef __APPLE__ #ifdef __APPLE__
bool direct = false; int direct = 0;
#endif #endif
const struct option longopts[] = { const struct option longopts[] = {
{ "blocksize", 1, 0, 'b' }, { "blocksize", 1, 0, 'b' },
@ -49,6 +49,7 @@ main (int argc, char* argv[])
int flags = O_RDONLY; int flags = O_RDONLY;
int n = 0; int n = 0;
int nfiles = 0; int nfiles = 0;
int quiet = 0;
while (1) { while (1) {
if ((c = getopt_long (argc, argv, optstring, longopts, &option_index)) == -1) { if ((c = getopt_long (argc, argv, optstring, longopts, &option_index)) == -1) {
@ -56,20 +57,23 @@ main (int argc, char* argv[])
} }
switch (c) { switch (c) {
case 'b': case 'b':
block_size = atoi (optarg); block_size = atoi (optarg);
break; break;
case 'l': case 'l':
max_files = atoi (optarg); max_files = atoi (optarg);
break; break;
case 'D': case 'D':
#ifdef __APPLE__ #ifdef __APPLE__
direct = true; direct = 1;
#endif #endif
break; break;
default: case 'q':
usage (); quiet = 1;
return 0; break;
default:
usage ();
return 0;
} }
} }
@ -101,7 +105,9 @@ main (int argc, char* argv[])
return 1; 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; nfiles = n;
files = (int *) malloc (sizeof (int) * nfiles); files = (int *) malloc (sizeof (int) * nfiles);
@ -138,7 +144,7 @@ main (int argc, char* argv[])
double max_elapsed = 0; double max_elapsed = 0;
double total_time = 0; double total_time = 0;
while (true) { while (1) {
gint64 before; gint64 before;
before = g_get_monotonic_time(); before = g_get_monotonic_time();
@ -154,7 +160,9 @@ main (int argc, char* argv[])
gint64 elapsed = g_get_monotonic_time() - before; gint64 elapsed = g_get_monotonic_time() - before;
double bandwidth = ((nfiles * block_size)/1048576.0) / (elapsed/1000000.0); 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; total_time += elapsed;
@ -169,6 +177,7 @@ out:
double bandwidth = ((nfiles * _read)/1048576.0) / (total_time/1000000.0); double bandwidth = ((nfiles * _read)/1048576.0) / (total_time/1000000.0);
double min_throughput = ((nfiles * block_size)/1048576.0) / (max_elapsed/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 ("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; return 0;