Is Reiserfs better than ext3

Jules Agee julesa at
Fri Jan 9 14:09:50 EST 2004

For what it's worth, I spoke with an employee of Sendmail, Inc. about 
eighteen months ago. At the time, for their MUA they were using an old 
1.x.something version of Cyrus-imapd that they had been patching and 
maintaining for some time, but of course it uses a very similar storage 
format to current Cyrus releases. He told me that they always recommend 
that their customers use ReiserFS when running Linux.

ext3 is great for reliability, and if your server is powerful enough for 
the number of users you have it may not matter. But moving a Cyrus 
server from ext3 to ReiserFS or XFS will almost certainly give you some 
performance increase.

ext3 in the Linux 2.4 kernel starts bogging down when you have a very 
large number of files in a single directory, such as a large Cyrus 
mailbox folder. It doesn't support directory indexing like ReiserFS, 
JFS, or XFS do, though I think in the Linux 2.6 kernel, directory 
indexing is an optional ext3 feature...


Ramprasad A Padmanabhan wrote:
> Hello all,
> I am having around 2000 users on my cyrus server ( redhat 9.0 )
> someone told be I should reformat my partition in Reiserfs rather that 
> ext3 and I will get a great perlformance improvement
> Is that so
> Thank
> Ram

Jules Agee
System Administrator
Pacific Coast Feather Co.
julesa at      x284

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