--- rtirq.conf~	2012-05-04 04:20:31.000000000 -0700
+++ rtirq.conf	2012-05-23 12:40:11.738278138 -0700
@@ -35,6 +35,9 @@
 # Priority decrease step.
 RTIRQ_PRIO_DECR=5
 
+# Lowest priority.
+RTIRQ_PRIO_LOW=51
+
 # Whether to reset all IRQ threads to SCHED_OTHER.
 RTIRQ_RESET_ALL=0