Re: Stop machine threads are getting preemted by the rt period enforcement

[Max Krasnyansky]

Peter Zijlstra wrote:
> On Wed, 2008-06-04 at 11:07 -0700, Max Krasnyansky wrote:
>> Peter, Ingo,
>>
>> Take a look at the report below (came up during isolcpu= remove discussions).
>>
>> It looks like stop_machine threads are getting forcefully preempted because
>> they exceed their RT quanta. It's strange because rt period is pretty long.
>> But given that disabling rt period logic solves the issue the machine was not
>> really stuck.
> 
> Yeah, I know, I'm already looking at this

I see. Does it look like a bug in the rt period logic ?
Or did the stop_machine thread really run for a long time (in the report that
you got that is) ?

Max
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