[Musix-Help] FW: reiserfs o ext3 -2º

[Federico]

Voy a comentar brevemente mi experiencia personal:

Estoy trabajando hace unos meses en la unificacion de tres servidores de
correo en una sola plataforma. La cantidad de usuarios es
aproximadamente unos 50.000

Uno de los primeros benchmarks que corri fue para ver que filesystem
usar. De los tres que probe (ext3, reiserfs y xfs) el claro elegido fue
reiserfs. Porque? Mejor performance para archivos pequenhos (fundamental
para los mails), Mejor performance para directorios con cientos de
subdirectorios y menor utilizacion de cpu (al menos que ext3, en eso xfs
es mejor).

De todas formas es una pena que reiserfsv4 todavia no este soportado en
los kernels 2.6, ya que tiene -aun mejor- performance que reiserfsv3 (la
version actual). Pero supongo que a lo largo de este anho se implemente.

Si les interesa: www.namesys.com/benchmarks.htm

Saludos

Marcos Guglielmetti wrote:
> Pero acá alguien duda de que ext3 sea peor:
> 
> Re: [a-users] File Systems?
> De: 
> tim hall <tech en glastonburymusic.org.uk>  (GlastonburyMusic)
>   Para: 
> AGNULA user forum <users en lists.agnula.org>
>   Fecha: 
> 23/01/06 16:28
>    
> On Sunday 22 January 2006 20:43, Dominique Michel was like:
> 
>>>Surely you mean ext3?
>>
>>You may be right, because I have changed it. I use ext2.
>>
>>The advantage of reiser and xfs over ext3 is at reiser and xfs have
>>a journal that's built into the data stream somehow and not a separate
>>file. I have learn that only recently and I have choose ext2 because 
> 
> at
> 
>>I get big trouble onetime with an ext3 partition where the journal was
>>crashed.
> 
> 
> It should be possible to rebuild the journal. Not sure how you do that 
> offhand.
> 
> 
>>Basiquelly I see ext3 as an ext2 filesystem with a journal, so
>>the performances will not be better. The article on
>>
> 
> http://myweb.cableone.net/eviltwin69/Arcana.html#Mark%20Knecht's%20filesyst
> 
>>em%20tests semm to say the same thing with other word. He get worst 
> 
> result
> 
>>with ext3 as with ext2. It is the case because the ext3 fs must stop 
> 
> to
> 
>>write the datas when it write the journal.
> 
> 
> Yes, this is absolutely true. However, when testing software with 
> realtime 
> privileges, journalling is a _must_ :|. As the journal is a bolt-on in 
> ext3 
> it required less head-scratching at the time.
> 
> 
>>So I will try to change my system partition to reiser or xfs when I 
> 
> get
> 
>>some time.
> 
> 
> Be interested to hear how you get on.