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

[Samium Gromoff]

At Mon, 2 Feb 2004 23:07:45 -0800,
Andrew Morton wrote:
> 
> 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.

Right. I`m rather emotional about this...

Kind of hard seeing the all starry and shiny 2.6 going down the toilet on my
little server with 16M RAM.

> 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.

Hmmm, i`d prefer plain 2.6, but i`ll try it anyway.

regards, Samium Gromoff


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