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SubjectRe: ext2/3 performance regression in 2.6 vs 2.4 for small interleaved writes
On Thu, 12 Feb 2004, Jon Burgess wrote:

[snip]

> >You might be able to improve things significantly on ext2 by increasing
> >EXT2_DEFAULT_PREALLOC_BLOCKS by a lot - make it 64 or 128. I don't recall
> >anyone trying that.
> >
> >
> I'll give it a go.

I think that a better choise for Ext2 and Ext3 is to put each stream
in a different directory (but that only makes sense if those directories
are in different groups). In that way, file blocks will not be interleaved on
disk, which is the problem. Try this, if you can, and let us know your
results.

Regards,

Juan.

[snip]
>
> Jon
>

--
D. Juan Piernas Cánovas
Departamento de Ingeniería y Tecnología de Computadores
Facultad de Informática. Universidad de Murcia
Campus de Espinardo - 30080 Murcia (SPAIN)
Tel.: +34968367657 Fax: +34968364151
email: piernas@ditec.um.es
PGP public key:
http://pgp.rediris.es:11371/pks/lookup?search=piernas%40ditec.um.es&op=index

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