Re: [Benchmark] AIM9 results

Nikita Danilov
2002-12-18T19:02:29Z

Cliff White writes:
> > Andrew Morton wrote:
> >
> > >Andrew Morton wrote:
> > >
> > >
> > >>Hans Reiser wrote:
> > >>
> > >>
> > >>>Andrew and Chris, are these changes in performance definitely due to VM
> > >>>changes (and not some difference I am not thinking of between 2.5 and
> > >>>2.4 reiserfs code)?
> > >>>
> > >>>
> > >>>
> > >>aim9 is just doing
> > >>
> > >> for (lots)
> > >> close(creat(filename))
> > >>
> > >>
> > > unlink(filename); /* of course */
> > >
> > >
> > >
> > >
> > Oh, commercial fs vendors must really love tuning for this benchmark....
> > sigh....
> >
> Ya, we think the AIM stuff is getting a little old. The basic idea is fine, but
> many of the tests do _very little work. We (OSDL) would like to re-do
> AIM9+7 and make it more useful. We'd love to have some input from everyone....
> For example, how big a file should we create for a real creat() test ?

Probably it should be variable. You may take a look at the way "mongo"
script (http://www.namesys.com/benchmarks/mongo.tar.gz) used to
benchmark reiserfs calculates size of file
(reiser_fract_tree.c:determine_size() function). Hmm, I remember putting
long comment for this function, but now it is gone...

> cliffw
>
> > Hans
> >

Nikita.