Increase the degree of interactivity ULE scheduler

O. Hartmann ohartman at zedat.fu-berlin.de
Sat Nov 5 18:42:33 UTC 2011


Am 11/04/11 14:33, schrieb Ivan Klymenko:
> Maybe useful the following information:
> This problem appears not to all architectures and types of CPU.
> on the Russian forums
> http://www.bsdportal.ru/viewtopic.php?t=24900
> http://forum.lissyara.su/viewtopic.php?f=45&t=34641&sid=aa596f0b70806ba053011da911f9ccae
> was a brute force to find out that:
> there is a suspicion that:
> - for AMD processors, this problem is not observed at all when the number of cores >= 2
> - on all single-core is the problem
> - only for some models with Intel >= 2 cores of the problem is not found
> 
> Perhaps, after all, avg@ rights (Subject: couple of sched_ule issues), that is not working
> properly mechanism rebalancing and to determine the topology of CPU?
> All converge, because my patch ( http://docs.freebsd.org/cgi/mid.cgi?20111022132817.35db5ccd )
> for SMP systems just do respite for rebalancing, which eliminates the problem with interactivity ...
> 
> Thanks!
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Is the patch going to be merged into HEAD shortly?

Regards,
Oliver

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