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

Samium Gromoff
2004-02-03T07:53:20Z

At Mon, 2 Feb 2004 23:07:45 -0800,
Andrew Morton wrote:
>
> Samium Gromoff <deepfire@sic-elvis.zel.ru> 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