Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: 2.6.9-rc1-mm1 | Date | Thu, 26 Aug 2004 22:36:13 +0200 |
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On Thursday 26 of August 2004 18:38, Con Kolivas wrote: > Rafael J. Wysocki wrote: > > On Thursday 26 of August 2004 13:07, Con Kolivas wrote: > >>Andrew Morton wrote: > >>>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc1/ > >>>2 .6.9-rc1-mm1/ > >>> > >>> > >>>- nicksched is still here. There has been very little feedback, except > >>>that it seems to slow some workloads on NUMA. > >> > >>That's because most people aren't interested in a new cpu scheduler for > >>2.6. > > > > I am, but I have no benchmarks that give any useful numbers. > > That's because there are none for interactivity; you're simply > reinforcing my point.
Hm, can you tell me please what you consider as the most obvious interactivity issue that you expect to be improved by your scheduler? A typical scenario in which the "standard" one will be "not good enough" in your opinion?
> >>The current one works well enough in most situations and people > >>aren't trying -mm to fix their interactive problems since they are few > >>and far between. > > > > Actually, with the current scheduler, updatedb really sucks. It's > > supposed to be a background task, but it hogs IO resources and memory > > like crazy (disclaimer: it's my personal subjective observation). > > The cpu scheduler plays almost no part in this. It's the I/O scheduler > and the vm.
I wasn't quite sure so thanks for pointing it out to me.
> IOnice will help the former _when it comes out_. Dropping > the swappiness kind of helps the latter; although there are numerous > alternative tweaks appearing for that too.
I know that. It does not hurt me that much. :-) Still, on a dual-Opteron box with a gig of RAM I would expect it to "behave" a bit better in the default configuration ...
Regards, RJW
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