On Wed, 2012-01-25 at 10:31 +0100, Tim Sander wrote:

Bad news, the ksoftirq(sirq-net-tx) error seems to happen not so often any 
more but it still happens :-(.

Tim,

Is the system still usable when this happens? If so, can you configure
in ftrace, and run a trace on what ksoftirq is doing:

mkdir /debug
mount -t debugfs nodev /debug
cd /debug/tracing
echo <pid-of-ksoftirq> > set_ftrace_pid
echo function > current_tracer
cat trace

Thanks!

-- Steve