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improved timing and load statistics

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This commit is contained in:
Antonio Carzaniga 2021-06-08 21:24:55 +02:00
parent 6d3fea4443
commit b7b39e4034
1 changed files with 17 additions and 13 deletions
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30
balls.c
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@ -666,7 +666,7 @@ void print_usage (const char * progname) {
"\tfy=<y-force>\n"
"\tradius=<min-radius>-<max-radius>\n"
"\tv=<min-velocity>-<max-velocity>\n"
"\tdelta=<frame-delta-time>\n"
"\tdelta=<frame-delta-time> (in seconds)\n"
"\tface=<filename>\n"
"\tclear=<clear-alpha>\n"
"\tstats=<sample-count> :: rendering timing statitstics (0=disabled, default)\n"
@ -678,26 +678,30 @@ void print_usage (const char * progname) {
unsigned int stats_sampling = 0;
gboolean timeout (gpointer user_data) {
guint64 start = 0, elapsed_usec;
if (stats_sampling > 0)
start = g_get_monotonic_time ();
update_state();
draw_balls_onto_window();
if (stats_sampling > 0) {
elapsed_usec = g_get_monotonic_time () - start;
static guint64 elapsed_usec_total = 0;
static guint64 update_usec_total = 0;
static unsigned int samples = 0;
guint64 start = g_get_monotonic_time ();
update_state();
guint64 update_usec = g_get_monotonic_time () - start;
draw_balls_onto_window();
guint64 elapsed_usec = g_get_monotonic_time () - start;
++samples;
elapsed_usec_total += elapsed_usec;
update_usec_total += update_usec;
if (samples == stats_sampling) {
printf("\rframe rendering: time = %lu usec, max freq = %.2f (avg over %u samples) ", elapsed_usec_total / samples, (1000000.0 * samples) / elapsed_usec_total, samples);
printf("\rupdate = %lu us, total = %lu us, load = %.0f%% (avg over %u samples) ",
update_usec_total / samples, elapsed_usec_total / samples,
(100.0*elapsed_usec_total / (1000000.0*samples*delta)), samples);
fflush(stdout);
samples = 0;
elapsed_usec_total = 0;
update_usec_total = 0;
}
++samples;
elapsed_usec_total += elapsed_usec;
} else {
update_state();
draw_balls_onto_window();
}
return TRUE;
}