kernels 3.4 slower due to allocation workqueue

Yann Dupont Yann.Dupont at univ-nantes.fr
Tue Apr 16 03:37:01 CDT 2013


Le 16/04/2013 09:24, Yann Dupont a écrit :
> Le 15/04/2013 15:45, Mark Tinguely a écrit :
>>
>> Here are the allocation worker changes.
>>
>
> Hello mark,  thanks for you answer
>
>> The biggest performance commit should be aa292847, which limits the 
>> callers to the worker.
>>
Yes. This is the case :

3.4.39 with aa292847b9fc6e187547110de833a7d3131bbddf applied gives full 
speed again, at least on this very specific test. Will try to have a 
more global view of the effects on other tests.

Thanks,

-- 
Yann Dupont - Service IRTS, DSI Université de Nantes
Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont at univ-nantes.fr



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