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

Nick Piggin
2004-02-01T23:53:09Z

Andrew Morton wrote:

>Philip Martin <philip@codematters.co.uk> 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