Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs

[Andrew Morton]

Samium Gromoff <deepfire@xxxxxxxxxxxxxxxx> wrote:
>
> 
> > > The machine is a dual P3 450MHz, 512MB, aic7xxx, 2 disk RAID-0 and                   
> > >  ReiserFS.  It's a few years old and has always run Linux, most                      
> > >  recently 2.4.24.  I decided to try 2.6.1 and the performance is                     
> > >  disappointing.                                                                      
> >                                                                                        
> > 2.6 has a few performance problems under heavy pageout at present.  Nick               
> > Piggin has some patches which largely fix it up.                                       
> 
> I`m sorry, but this is misguiding. 2.6 does not have a few performance
> problems under heavy pageout.
> 

As you have frequently and somewhat redundantly reminded us.

Perhaps you could test Nick's patches.   They are at

	http://www.kerneltrap.org/~npiggin/vm/

Against 2.6.2-rc2-mm2.  First revert vm-rss-limit-enforcement.patch, then
apply those three.

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