Author: Richard Welty Date: To: exim-users Subject: Re: [Exim] Advise pleae: Performance problems under high load - migrate from mbox->maildir
On Tue, 28 Aug 2001 09:21:32 +0100 (BST), Philip wrote: >That's certainly one approach. Another one is to try setting
>lock_fcntl_timeout in the appendfile transport. RTFM to see how this
>might affect things. It certainly helped one busy site. Something else
>that might help, depending on how many mailboxes you have, is to split
>them into /var/mail/xxx/username so that they aren't all in the same
>directory. Look at ${nhash for a way of computing xxx.
this is where, in dealing with some serious performance issues, i'd
consider multiple scsi controllers and multiple disks, and spread the
/var/mail/xxx directories across multiple controllers/disks, or better
yet, if there's a budget, a nice raid array with some redundancy (the
original author did say that losing mail was not acceptable, didn't
he? sounds like the budgetary case is already made.)
