Re: [PATCH] posix-timers: RCU conversion

[Avi Kivity]

On 04/05/2011 12:03 PM, Peter Zijlstra wrote:
> On Tue, 2011-04-05 at 11:56 +0300, Avi Kivity wrote:
> >
> >  Could be waking up due to guest wakeups, or qemu internal wakeups
> >  (display refresh) or due to guest timer sources which are masked away in
> >  the guest (if that's the case we should optimize it away).
>
> Right, so I guess we're all clutching at straws here :-)
>
> Ben how usable is that system when its in that state? Could you run a
> function trace or a trace with all kvm and sched trace-events enabled?

Ben, to do that, look up http://www.linux-kvm.org/page/Tracing; the 
command for combined sched/kvm tracing is

# trace-cmd record -b 20000 -e kvm -e sched



--
error compiling committee.c: too many arguments to function

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