Re: Increase the degree of interactivity ULE scheduler

В Sat, 05 Nov 2011 19:42:12 +0100
"O. Hartmann" <ohartman_at_zedat.fu-berlin.de> пишет:

> 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_at_ 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!
> 
> Is the patch going to be merged into HEAD shortly?
> 
> Regards,
> Oliver
> 

I'm not sure... Most of all we must address the root causes of this
problem...