Re: High-volume server settings

[David Emmerich <dpemmerich@driftwood.eiu.edu>]

Here's what we have on our freshly deployed 5.0.13 setup.
zimbraHttpNumThreads: 500
zimbraHttpSSLNumThreads: 500
zimbraImapNumThreads: 500
zimbraLmtpNumThreads: 100
zimbraPop3NumThreads: 300
zimbraScheduledTaskNumThreads: 20

We have 3 mailbox servers with roughly 15,000 accounts per server.  How much memory, number of processors, and how many spindles do you have for each mailstore?

David Emmerich
Network Specialist II - ITS Systems Administration
Eastern Illinois University

----- Original Message -----
From: "Dmitry S. Makovey" <dmitry@athabascau.ca>
To: "zimbra-hied-admins" <zimbra-hied-admins@sfu.ca>
Sent: Tuesday, February 17, 2009 10:59:16 AM GMT -06:00 US/Canada Central
Subject: High-volume server settings


Hi everybody,

We are running Zimbra in a limited capacity right now. We've sorted out issues 
with OS/hardware level (I think), but now it seems we're stuck with 
application configuration. Apparently some on that list are running several 
thousands accounts per mailbox just fine and ours is stuttering (lots of 50x 
HTTP errors on proxy boxes) on a measly several hundred accounts. Any tips as 
far as app config goes? For example: what are the thread numbers for 
multi-thousand boxes? Ours right now are:

$ zmprov gs mailboxX.ca | grep -i threads
zimbraHttpNumThreads: 1000
zimbraHttpSSLNumThreads: 50
zimbraImapNumThreads: 200
zimbraLmtpNumThreads: 20
zimbraPop3NumThreads: 100
zimbraScheduledTaskNumThreads: 20

Is there anything else of particular interest for larger deployments?

-- 
Dmitry Makovey
Web Systems Administrator
Athabasca University
(780) 675-6245