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

[Nick Piggin]

Andrew Morton wrote:

> Philip Martin <philip@xxxxxxxxxxxxxxxxx> 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.
>
>
> > My test is a software build of about 200 source files (written in C)
> > that I usually build using "nice make -j4".
>
> Tried -j3?

Its got 512MB RAM though so its not swapping, is it?

Philip, can you please send about 30 seconds of vmstat 1
output for 2.4 and 2.6 while the test is running. Thanks

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/