Large dirs [Was: Re: Clustering and replication]

[Janne Peltonen]

On Tue, Jan 30, 2007 at 11:22:55AM -0500, Joel Nimety wrote:
> Janne Peltonen wrote:
> > On Tue, Jan 30, 2007 at 11:01:03AM +0100, Simon Matter wrote:
> >>> This might be a problem, since we have some users that really have 10000
> >>> messages in their INBOX. Although it seems that Cyrus itself cannot cope
> >>> with this either... in our current, non-clustering setup. But then, it's
> >>> an old version.
> >> Interesting, I have some folders with ~100'000 messages and cyrus handles
> >> it very nice. Did you say you have a problem with 10'000 messages in a
> >> mailbox?
> > I didn't inspect the case at all closely, but yes, there was one user
> > with some 10'000 messages in one folder experiencing slowdown, and after
> > I suggested him to clean up his INBOX, there were no more complaints.
> > But it was (is) really an old version of Cyrus on a very busy server.
> What fs are you using?  ext3 without special flags whould choke on
> 10-20k message per directory.  ResierFS (and maybe XFS?  JFS?) handle
> large numbers of files per directory >20K just fine

Solaris 8 ufs. Shouldn't have any trouble with that # of files per
dir. But thanks for the info abt ext3, might be useful if we decide
against gfs on the future system - any references?


--Janne