Re: [Bug #12650] Strange load average and ksoftirqd behavior with 2.6.29-rc2-git1

Ingo Molnar
2009-02-16T20:09:23Z

* Paul E. McKenney <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> wrote:

> Here the calls to rcu_process_callbacks() are only 75
> microseconds apart, so that this function is consuming more
> than 10% of a CPU. The strange thing is that I don't see a
> raise_softirq() in between, though perhaps it gets inlined or
> something that makes it invisible to ftrace.

look at the latest trace please, that has even the most inline
raise-softirq method instrumented, so all the raising is
visible.

Ingo