From: Peter Wong <wpeter@us...> - 2002-08-06 20:14:09
>On Tue, Aug 06 2002, Adrian Bunk wrote:
> > On Tue, 6 Aug 2002, Jens Axboe wrote:
> > >...
> > > try a work load that excercises the block i/o layer alone (O_DIRECT,
> > > raw, whatnot) and then compare 2.4 and 2.5. ibm had some slides on
> > > from ols, unfortunately I don't know if they have then online.
> > Pages 390-406 in
> > http://www.linux.org.uk/~ajh/ols2002_proceedings.pdf.gz
> > or are you talking about something different?
> Right thanks, exactly those. Table 3 on page 395 is the one I noted.
> Forget readv, as that hasn't been done in 2.5 yet. I'd say a 2.5.17
> untweaked kernel beating 2.4 tweaked beyond recognition isn't too shabby
> for a devel series kernel.
The corresponding presentation in the sdd format is available at
Peter Wai Yee Wong
IBM Linux Technology Center, Performance Analysis