--- realfeel.c.orig	2004-10-27 15:04:46.237707040 +0200
+++ realfeel.c	2004-10-27 15:04:50.204104056 +0200
@@ -91,7 +91,7 @@ int set_realtime_priority(void)
 	 * set the process to realtime privs
 	 */
 	memset(&schp, 0, sizeof(schp));
-	schp.sched_priority = sched_get_priority_max(SCHED_FIFO);
+	schp.sched_priority = sched_get_priority_max(SCHED_FIFO) - 1;
 	
 	if (sched_setscheduler(0, SCHED_FIFO, &schp) != 0) {
 		perror("sched_setscheduler");
@@ -191,8 +191,19 @@ int main(int argc, char *argv[])
 		now = rdtsc();
 		delay = secondsPerTick * (now - last);
 		if (delay > max_delay) {
+			int i;
+
 			max_delay = delay;
 			printf("%.3f msec\n", 1e3 * (ideal - delay));
+			/*
+			 * To make sure that the delay due to the printf
+			 * is not counted we skip the next period:
+			 */
+			for (i = 0; i < 10; i++)
+				if (read(fd, &data, sizeof(data)) == -1)
+					fatal("blocking read failed");
+			last = rdtsc();
+			continue;
 		}
 		ms = (-(ideal - delay) + 1.0/20000.0) * 10000;
 		if (ms < 0)