void dump_hist_stats (void) { double minavg, maxavg, avgavg; /* max is last, where its visible w/o scrolling */ minavg = dump_histogram (histogram_min, "min"); avgavg = dump_histogram (histogram_avg, "avg"); maxavg = dump_histogram (histogram_max, "max"); fprintf(stderr,"HSH|--param|--samples-|--average--|---stddev--\n"); dump_stats (histogram_min, "min", minavg); dump_stats (histogram_avg, "avg", avgavg); dump_stats (histogram_max, "max", maxavg); }
int main(int ac, char **av) { Image *img; int *histogram; InitializeMagick("./"); img = get_image_from_path(av[1]); img = get_grayscale_image(img); histogram = create_histogram(img); dump_histogram(histogram, av[2]); dump_image(img, "./", "gray", "jpeg"); return (0); }
void worker(void *cookie) { long long minj = 10000000, maxj = -10000000, dt, sumj = 0; unsigned long long count = 0; int err, n; err = rt_sem_create(&switch_sem, "dispsem", 0, S_FIFO); if (err) { fprintf(stderr,"switch: cannot create semaphore: %s\n", strerror(-err)); return; } for (n=0; n<nsamples; n++) { err = rt_sem_p(&switch_sem, TM_INFINITE); if (err) { if (err != -EIDRM) fprintf(stderr,"switch: failed to pend on semaphore, code %d\n", err); rt_task_delete(NULL); } if (++count != switch_count) { count = switch_count; lost++; continue; } // First few switches are slow. // Probably due to the Linux <-> RT context migration at task startup. if (count < ignore) continue; dt = (long) (rt_timer_tsc() - switch_tsc); if (dt > maxj) maxj = dt; if (dt < minj) minj = dt; sumj += dt; if (do_histogram) add_histogram(dt); } rt_sem_delete(&switch_sem); minjitter = minj; maxjitter = maxj; avgjitter = sumj / n; printf("RTH|%12s|%12s|%12s|%12s\n", "lat min", "lat avg", "lat max", "lost"); printf("RTD|%12.3f|%12.3f|%12.3f|%12lld\n", rt_timer_tsc2ns(minjitter) / 1000.0, rt_timer_tsc2ns(avgjitter) / 1000.0, rt_timer_tsc2ns(maxjitter) / 1000.0, lost); if (do_histogram) dump_histogram(); exit(0); }
static void worker(void *cookie) { long long minj = 10000000, maxj = -10000000, dt, sumj = 0; unsigned long long count = 0; int err, n; err = rt_sem_create(&switch_sem, "dispsem", 0, S_FIFO); if (err) { warning("failed to create semaphore (%s)\n", symerror(err)); return; } for (n = 0; n < nsamples; n++) { err = rt_sem_p(&switch_sem, TM_INFINITE); if (err) { if (err != -EIDRM && err != -EINVAL) warning("failed to pend on semaphore (%s)\n", symerror(err)); exit(EXIT_FAILURE); } dt = (long) (rt_timer_tsc() - switch_tsc); if (switch_count - count > 1) { lost += switch_count - count; count = switch_count; continue; } if (++count < warmup) continue; if (dt > maxj) maxj = dt; if (dt < minj) minj = dt; sumj += dt; if (do_histogram) add_histogram(dt); } rt_sem_delete(&switch_sem); minjitter = minj; maxjitter = maxj; avgjitter = sumj / n; printf("RTH|%12s|%12s|%12s|%12s\n", "lat min", "lat avg", "lat max", "lost"); printf("RTD|%12.3f|%12.3f|%12.3f|%12lld\n", rt_timer_tsc2ns(minjitter) / 1000.0, rt_timer_tsc2ns(avgjitter) / 1000.0, rt_timer_tsc2ns(maxjitter) / 1000.0, lost); if (late) printf("LATE: %d\n", late); if (do_histogram) dump_histogram(); exit(0); }