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

Ingo Molnar
2009-02-18T00:38:21Z

* Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:

> No, it was my confusion -- I later realized that your data
> above meant that the force-quiescent-state code path was not
> being heavily exercised. So no need for this trace!

Do you have any theory for why RCU was activated every 100-200
microseconds, resulting in 20% ksoftirqd CPU use - and why the
problem went away with classic-rcu?

Ingo