[Imap-uw] uninterruptible sleep, high load average, high iowait
markrcrispin at live.com
Wed Oct 22 11:23:33 PDT 2008
> - we currently have no quotas (you read that right) on disk usage and
> despite warnings from I.T., many users' Inboxes had grown to between 400
> and 600MB. Sent and Trash folders for several users> 1GB. Some users
> have as many as 300 imap folders, so while there are just 60 users,
> we're hitting the machine pretty hard (IMO).
> - our tech support mail account is shared by about 15 people who may
> attach to it at one time.
I hope that you're using mbx format and not traditional UNIX mailbox format
(mbox format) especially as you have multiple access to the same mailbox.
Traditional UNIX format is a disaster with that type of size. mbx format
starts to creek around that point as well, although the issues in mbx is more
with the number of messages than the raw mailbox size.
In imap-2007b, you will find mix format which should scale much better to
this type of mailbox.
Note that I no longer support UW IMAP; I'm just responding as a community
member. I've forked Panda IMAP -- http://panda.com/imap/ -- and am
working on (among other things) a completely new IMAP server at
-- Mark --
Store, manage and share up to 5GB with Windows Live SkyDrive.
More information about the Imap-uw