Re: [RFC][PATCH 25/26] sched, numa: Only migrate long-running entities

Rik van Riel
2012-07-09T14:54:13Z

On 07/09/2012 08:26 AM, Peter Zijlstra wrote:
> On Sun, 2012-07-08 at 14:34 -0400, Rik van Riel wrote:

>> Do we really want to calculate the amount of CPU time used
>> by a process, and start migrating after just one second?
>>
>> Or would it be ok to start migrating once a process has
>> been scanned once or twice by the NUMA code?
>
> You mean, the 2-3rd time we try and migrate this task, not the memory
> scanning thing as per Andrea, right?

Indeed. That way we can simply keep a flag somewhere,
instead of iterating over the threads in a process.

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