Re: 2.6.9-rc1-mm1

[Con Kolivas <kernel@kolivas.org>]

[-- Attachment #1: Type: text/plain, Size: 1224 bytes --]

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.

>>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. 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.

Cheers,
Con

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 256 bytes --]