Re: [bug report] sched: stop_machine() usage causes load balancerto misbehave

From: Steven Rostedt
Date: Thu Oct 02 2008 - 20:03:14 EST



On Thu, 2 Oct 2008, Chris Friesen wrote:

> I mentioned before that ftrace (specifically the ftraced daemon) seems to be
> interfering with the load balancer. After some experimenting, it appears that
> any regular calls to stop_machine() will end up confusing the load balancer.
>
> As an experiment, I disabled ftraced (which would normally result in correct
> load balancing) but added a single kernel thread which simply runs the
> following loop, where "chrisd2" is a dummy function.


Chris,

Thanks for looking into this. I don't have an answer for your question,
but I'll work harder to get the MCOUNT_REC working in PPC.

Does this happen with x86 too?

-- Steve
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