Re: [reiserfs-dev] Re: New XFS, ReiserFS and Ext2 benchmarks

Hans Reiser
2001-05-22T07:58:49Z

My apologies, I meant that the make is probably compiler bound (I said CPU
bound) not FS bound.

We find that one must use cp and similar utilities (not compilers) to become FS
bound when using a Linux FS (unlike the older Unixes for which compiles were
considered excellent benchmarks).

Hans Reiser wrote:

Hans
>
> Ricardo Galli wrote:
> >
> > Hi,
> > you can find at http://bulma.lug.net/static/ a few new benchmarks among
> > Reiser, XFS and Ext2 (also one with JFS).
> >
> > This time there is a comprehensive Hans' Mongo benchmarks
> > (http://bulma.lug.net/static/mongo/ )and a couple of kernel compilations and
> > read/write/fsync operations tests (I was very careful of populating the
> > cache before the measures for the last two cases).
> >
> > Regards,
> >
> > --ricardo
> > http://m3d.uib.es/~gallir/
>
> These are interesting benchmarks, my only caveats are that make bzImage is
> probably CPU bound not IO bound (the traditional value of compiles as FS
> benchmarks does not apply to Linux filesystems, as they don't do the misdesigned
> synchronization policy of older Unices, and compiles are CPU bound for them in
> my experience), that I don't understand fully why we are so much faster at the
> cp -ar, and I would like Yura to try to reproduce the cp -ar as it seems too
> good to be true.
>
> Thanks for investing the time into this Ricardo.
>
> Hans