--- /dev/null
+/* gcc -o readtest readtest.cc `pkg-config --cflags --libs glib-2.0` */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <fcntl.h>
+
+#include <glib.h>
+
+char* data = 0;
+
+int
+read_one (int fd, ssize_t sz)
+{
+
+ return 0;
+}
+
+void
+usage ()
+{
+ fprintf (stderr, "readtest [ -b BLOCKSIZE ] [ -s ] [ -D ] filename-template\n");
+}
+
+int
+main (int argc, char* argv[])
+{
+ int* files;
+ char optstring[] = "b:D";
+ uint32_t block_size = 64 * 1024 * 4;
+ bool direct = false;
+ const struct option longopts[] = {
+ { "blocksize", 1, 0, 'b' },
+ { "direct", 0, 0, 'D' },
+ { 0, 0, 0, 0 }
+ };
+
+ int option_index = 0;
+ int c = 0;
+ char const * name_template = 0;
+ int flags = O_RDONLY;
+ int n = 0;
+ int nfiles = 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 'D':
+ direct = true;
+ break;
+ default:
+ usage ();
+ return 0;
+ }
+ }
+
+ if (optind < argc) {
+ name_template = argv[optind];
+ } else {
+ usage ();
+ return 1;
+ }
+
+ while (1) {
+ char path[PATH_MAX+1];
+
+ snprintf (path, sizeof (path), name_template, n+1);
+
+ if (access (path, R_OK) != 0) {
+ break;
+ }
+
+ ++n;
+ }
+
+ if (n == 0) {
+ fprintf (stderr, "No matching files found for %s\n", name_template);
+ return 1;
+ }
+
+ printf ("Discovered %d files using %s\n", n, name_template);
+
+ nfiles = n;
+ files = (int *) malloc (sizeof (int) * nfiles);
+
+ for (n = 0; n < nfiles; ++n) {
+
+ char path[PATH_MAX+1];
+ int fd;
+
+ snprintf (path, sizeof (path), name_template, n+1);
+
+ if ((fd = open (path, flags, 0644)) < 0) {
+ fprintf (stderr, "Could not open file #%d @ %s (%s)\n", n, path, strerror (errno));
+ return 1;
+ }
+
+#ifdef __APPLE__
+ if (direct) {
+ /* Apple man pages say only that it returns "a value other than -1 on success",
+ which probably means zero, but you just can't be too careful with
+ those guys.
+ */
+ if (fcntl (fd, F_NOCACHE, 1) == -1) {
+ fprintf (stderr, "Cannot set F_NOCACHE on file #%d\n", n);
+ }
+ }
+#endif
+
+ files[n] = fd;
+ }
+
+ data = (char*) malloc (sizeof (char) * block_size);
+ uint64_t read = 0;
+
+ while (true) {
+ gint64 before;
+ before = g_get_monotonic_time();
+
+ for (n = 0; n < nfiles; ++n) {
+
+ if (::read (files[n], (char*) data, block_size) != block_size) {
+ fprintf (stderr, "read failed on file %d (%s)\n", n, strerror (errno));
+ return -1;
+ }
+ }
+
+ read += block_size;
+ 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", read, elapsed/1000000.0, bandwidth);
+ }
+
+ return 0;
+}
+
+
+++ /dev/null
-/* gcc -o readtest readtest.cc `pkg-config --cflags --libs glib-2.0` */
-
-#include <stdlib.h>
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <string.h>
-#include <getopt.h>
-#include <fcntl.h>
-
-#include <glib.h>
-
-char* data = 0;
-
-int
-read_one (int fd, ssize_t sz)
-{
-
- return 0;
-}
-
-void
-usage ()
-{
- fprintf (stderr, "readtest [ -b BLOCKSIZE ] [ -s ] [ -D ] filename-template\n");
-}
-
-int
-main (int argc, char* argv[])
-{
- int* files;
- char optstring[] = "b:D";
- uint32_t block_size = 64 * 1024 * 4;
- bool direct = false;
- const struct option longopts[] = {
- { "blocksize", 1, 0, 'b' },
- { "direct", 0, 0, 'D' },
- { 0, 0, 0, 0 }
- };
-
- int option_index = 0;
- int c = 0;
- char const * name_template = 0;
- int flags = O_RDONLY;
- int n = 0;
- int nfiles = 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 'D':
- direct = true;
- break;
- default:
- usage ();
- return 0;
- }
- }
-
- if (optind < argc) {
- name_template = argv[optind];
- } else {
- usage ();
- return 1;
- }
-
- while (1) {
- char path[PATH_MAX+1];
-
- snprintf (path, sizeof (path), name_template, n+1);
-
- if (access (path, R_OK) != 0) {
- break;
- }
-
- ++n;
- }
-
- if (n == 0) {
- fprintf (stderr, "No matching files found for %s\n", name_template);
- return 1;
- }
-
- printf ("Discovered %d files using %s\n", n, name_template);
-
- nfiles = n;
- files = (int *) malloc (sizeof (int) * nfiles);
-
- for (n = 0; n < nfiles; ++n) {
-
- char path[PATH_MAX+1];
- int fd;
-
- snprintf (path, sizeof (path), name_template, n+1);
-
- if ((fd = open (path, flags, 0644)) < 0) {
- fprintf (stderr, "Could not open file #%d @ %s (%s)\n", n, path, strerror (errno));
- return 1;
- }
-
-#ifdef __APPLE__
- if (direct) {
- /* Apple man pages say only that it returns "a value other than -1 on success",
- which probably means zero, but you just can't be too careful with
- those guys.
- */
- if (fcntl (fd, F_NOCACHE, 1) == -1) {
- fprintf (stderr, "Cannot set F_NOCACHE on file #%d\n", n);
- }
- }
-#endif
-
- files[n] = fd;
- }
-
- data = (char*) malloc (sizeof (char) * block_size);
- uint64_t read = 0;
-
- while (true) {
- gint64 before;
- before = g_get_monotonic_time();
-
- for (n = 0; n < nfiles; ++n) {
-
- if (::read (files[n], (char*) data, block_size) != block_size) {
- fprintf (stderr, "read failed on file %d (%s)\n", n, strerror (errno));
- return -1;
- }
- }
-
- read += block_size;
- 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", read, elapsed/1000000.0, bandwidth);
- }
-
- return 0;
-}
-
-
projects / ardour.git / commitdiff