> In the course of my experiments with rt kernels
> it so happens that the gui versions of tuna built
> from upstream (RHEL, F11) SRPMs show wrong affinity settings
> for IRQ threads.
It wasn't actually a tuna bug but rather misunderstanding on my part.
When tuna-0.8.4-1 gui is being used to set IRQ affinity
it also changes affinity settings of a related kernel thread.
On the other hand rtctl-1.5-1 script can only restore
kernel threads affinities. The following rtctl-1.5-1 patch
may be used to restore IRQ affinities on system startup
according to affinity settings of related kernel threads if needed:
--- /usr/sbin/rtctl.20090912 2009-09-12 19:50:37.000000000 +0400
+++ /usr/sbin/rtctl 2009-09-13 12:14:01.000000000 +0400
@@ -82,6 +83,8 @@
}
if (group_affinity[i] != "*") {
print "taskset -p " group_affinity[i] " " $1 " > /dev/null"
+ if (match($2, /\[IRQ-(.*)\]$/, tmp))
+ print "echo " strtonum(group_affinity[i]) " > /proc/irq/" tmp[1] "/smp_affinity"
}
break
}
Sasha
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