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* More accurate throughput tests by removing most of the overhead. 

* Don't fill the timing tests with stdio shit, gives much better results.

Now the only overhead is a tiny fraction of the tested time.
140MB/s in both directions in line buffered mode on my lightly loaded Athlon 3000.


SVN revision: 19472
This commit is contained in:
David Walter Seikel 2006-01-01 17:20:33 +00:00
parent ccc3de03a5
commit 28923a44ba
1 changed files with 51 additions and 62 deletions
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113
legacy/ecore/examples/exe_example.c
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@ -15,7 +15,7 @@ int size = 0;
int exe_count = 0;
int data_count = 0;
int line_count = 0;
int one_percent = 0;
double then = 0.0, now = 0.0;
Ecore_Exe *exe0 = NULL;
Ecore_Exe *exe1 = NULL;
Ecore_Exe *exe2 = NULL;
@ -58,26 +58,20 @@ exe_data_count(void *data, int type, void *event)
if (ev->lines)
{
int i;
for (i = 0; ev->lines[i].line != NULL; i++)
line_count++;
printf("%d ", i);
}
for (i = 0; i < ev->size; i++)
{
data_count++;
if ((data_count % one_percent) == 0)
{
putchar('.');
fflush(stdout);
}
/* printf("%d ", i); This is for testing the number of lines per event.*/
}
data_count += ev->size;
if (data_count >= size)
{
now = ecore_time_get();
printf("\n\nApproximate data rate - %f bytes/second (%d lines and %d bytes in %f seconds).\n", ((double) data_count) / (now - then), line_count, data_count, now - then);
if (data_count != size)
printf("Size discrepency of %d bytes.\n", size - data_count);
printf("\n");
/* Since there does not seem to be anyway to convince /bin/cat to finish... */
ecore_exe_terminate(exe0);
}
@ -98,9 +92,49 @@ exe_exit(void *data, int type, void *event)
return 1;
}
int timer_once(void *data)
{
int argc;
char **argv;
int i = 1;
ecore_app_args_get(&argc, &argv);
ecore_event_handler_add(ECORE_EVENT_EXE_DATA, exe_data_count, NULL);
printf("FILE : %s\n", argv[i]);
exe0 = ecore_exe_pipe_run("/bin/cat", ECORE_EXE_PIPE_WRITE | ECORE_EXE_PIPE_READ | ECORE_EXE_PIPE_READ_LINE_BUFFERED, NULL);
if (exe0)
{
struct stat s;
exe_count++;
if (stat(argv[i], &s) == 0)
{
int fd;
size = s.st_size;
if ((fd = open(argv[i], O_RDONLY)) != -1)
{
char buf[1024];
int length;
then = ecore_time_get();
while ((length = read(fd, buf, 1024)) > 0)
ecore_exe_pipe_write(exe0, buf, length);
close(fd);
}
}
/* FIXME: Fuckit, neither of these will actually cause /bin/cat to shut down. What the fuck does it take? */
ecore_exe_pipe_write(exe0, "\004", 1); /* Send an EOF. */
ecore_exe_pipe_write_close(exe0); /* /bin/cat should stop when it's stdin closes. */
}
return 0;
}
int main(int argc, char **argv)
{
double then = 0.0, now = 0.0;
ecore_app_args_set(argc, (const char **) argv);
ecore_init();
ecore_event_handler_add(ECORE_EVENT_EXE_EXIT, exe_exit, NULL);
@ -141,56 +175,11 @@ int main(int argc, char **argv)
printf(" [*] exe3 = %p (echo \"ls\" | /bin/cat)\n", exe3);
}
else
{
int i = 1;
ecore_timer_add(0.5, timer_once, NULL);
ecore_event_handler_add(ECORE_EVENT_EXE_DATA, exe_data_count, NULL);
printf("FILE : %s\n", argv[i]);
exe0 = ecore_exe_pipe_run("/bin/cat",
ECORE_EXE_PIPE_WRITE | ECORE_EXE_PIPE_READ | ECORE_EXE_PIPE_READ_LINE_BUFFERED,
NULL);
if (exe0)
{
struct stat s;
exe_count++;
if (stat(argv[i], &s) == 0)
{
int fd;
size = s.st_size;
one_percent = s.st_size / 100;
if (one_percent == 0)
one_percent = 1;
if ((fd = open(argv[i], O_RDONLY)) != -1)
{
char buf[1024];
int length;
while ((length = read(fd, buf, 1024)) > 0)
ecore_exe_pipe_write(exe0, buf, length);
close(fd);
}
}
/* FIXME: Fuckit, neither of these will actually cause /bin/cat to shut down. What the fuck does it take? */
ecore_exe_pipe_write(exe0, "\004", 1); /* Send an EOF. */
ecore_exe_pipe_write_close(exe0); /* /bin/cat should stop when it's stdin closes. */
}
}
if (one_percent)
then = ecore_time_get() + 0.1; /* Factor in the exe exit delay at least. */
if (exe_count > 0)
if ((exe_count > 0) || (argc > 1))
ecore_main_loop_begin();
if (one_percent)
{
now = ecore_time_get();
printf("Approximate data rate (overhead not accounted for) - %f bytes/second ( %d lines and %d bytes in %f seconds).\n", ((double) data_count) / (now - then), line_count, data_count, now - then);
if (data_count != size)
printf("Size discrepency of %d bytes.\n", size - data_count);
}
ecore_shutdown();
return 0;
}