Performance question...

Michael J Farina mfarina at
Wed Feb 25 13:45:20 EST 2004

I plan on building a Murder with over 150k accounts. 4 frontends and 4
backends My question is what would be best auth mechs for accounts and cyrus
processes? I have had a working test with GSSAPI, PLAIN for users. This
worked for everything except the imap proxyd. I would get a error about
packet sizes too big. I switched to DIGEST-MD5 and this problem stopped. Any
info you can give me would be great.

----- Original Message ----- 
From: "Etienne Goyer" <etienne.goyer at>
To: <info-cyrus at>
Sent: Wednesday, February 25, 2004 11:03 AM
Subject: Re: Performance question...

> On Wed, Feb 25, 2004 at 01:11:30AM -0300, Henrique de Moraes Holschuh
> >   3. A proper filesystem (ext2 and ext3 in default non-btree mode,
> >      I doubt UFS is any better).
> I hear that often but don't give it much credence.  We use ext3 in a
> Murder with 70K accounts and two backends.  We have no performance
> problem.  Actually, the performance is better than I envisionned at
> first.  I don't pretend to have done extensive file system comparison,
> but I guess if the default fs of your OS is fast *enough*, there is no
> reasons to go with non-standard filesystem.  Actually, from a practical
> sysadmin point of view, you would be better sticking with well-known and
> well-tested default that have well-known and well-tested tools (fsck,
> debugfs, etc).
> If I where to build a mailsystem with many hundreds of thousands or
> millions account, that would be another story of course.
> -- 
> Etienne Goyer                    Linux Québec Technologies Inc.
>       etienne.goyer at
> ---
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