ricardo at wenn.com
Tue Nov 8 15:59:01 EET 2011
What is the setup on the EVA, FC or iSCSI?
Sent from my BlackBerry® wireless device
From: Peer Heinlein <p.heinlein at heinlein-support.de>
Sender: dovecot-bounces at dovecot.org
Date: Tue, 8 Nov 2011 14:50:25
To: <dovecot at dovecot.org>
Subject: [Dovecot] Performance-Tuning
I have > 11 TB hard used Mailstorage, saved als maildir in ext3 on HP EVA.
I always wanted to make some mesurements about several influences to the
performance (switch to ext4, switch to mdbox), but I never had enough time
to do that.
At the moment I *need* more speed, we have too much waitI/O on the system
and I already used all other performance and tuning-tricks (separated cache,
noatime, fsync and all that stuff).
I have to change my setup, maybe somebody else here have hard facts:
*) Is ext4 faster? How much faster?
*) Is it faster because of the ext4 kernel-module (which can be used on ext3
to) or because of the ext4 filesystem layout?
*) Is mdbox really faster? I'd like to have mdbox to have better performance
in running my backup-processes. But does it bring some performance boosts
Thanks for any hints an tricks,
Heinlein Professional Linux Support GmbH
Linux: Akademie - Support - Hosting
Zwangsangaben lt. §35a GmbHG:
HRB 93818 B / Amtsgericht Berlin-Charlottenburg,
Geschäftsführer: Peer Heinlein -- Sitz: Berlin
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