|
Lots...
Start with your disk
drives as they are the slowest part of any computer. Defrag (and do it
regularly). Check the size of all users mailbox files. POP3 will cause all
messages to download to the users machines (usually) so mailboxes should be
pretty small. But if you find some that are not, talk to those users to
understand how they are setting their client. Run CHKDSK /F on the drives (yes a
reboot is needed, just do it!). Run Perfmon and monitor the Disk Queue Length.
If you see sustained time with a value over 2, you may have problems that need
to be addressed (see MS). Disable all logging (as a test).
A couple of quick
telnet sessions to your POP3 service shows in excess of 125,000 connections
since the last restart and between 10 and 25 connections in addition to the one
I made. The response during this test was pretty quick (subjectively). >From this
perspective, it looks pretty "normal" right now.
Is there any period
of time when things seem to be slower than normal? Any pattern to
this?
I would expect the
restart of POP3 would help and for longer than 3 minutes. It might be a good
idea to enable logging for POP3 and see what you get in those 3
minutes.
Oh,
clients should NOT be causing a POP3 check any more often than about every
5-10 (10 is better) minutes. If a user sets his to 1 minute, tell him
NO! Disable access to his account and when he complains, explain that
checking that often is not going to get his email any faster and is placing an
un-needed load on your server.
I guess that is
enough for now...
Dan
Donnelly
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of John Queen Sent: Wednesday, February 01, 2006 10:47 AM To: [email protected] Subject: RE: [IMail Forum] POP3 Service processor utilization I ran the upgrade last night and am
seeing the same issues on 8.22. Does anyone have any other
ideas?
Thanks!
John
Queen From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Grant Griffith - IMail Sent: Monday, January 30, 2006 12:12 PM To: [email protected] Subject: RE: [IMail Forum] POP3 Service processor utilization John, we are running
IMail 8.22 and are not seeing this. We have around 6000 users and most of
them use POP3 without any issues. Our server is about the same as
yours. I hardly ever see POP3 taking much resources at all. Might
want to upgrade as I think there were some vulnerabilities is versions before
8.22? I could be wrong though. Thanks, Grant
Griffith EI8HTLEGS, A Division
of ETC (812)932-1000 From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of John
Queen Question, For the past 2
or 3 weeks the POP3d32.exe service is using all available processor and
basically slowing the server to a crawl. Restarting the service only helps for
about 3 minutes. The service consistently uses 60~70% of the processor all the
time. We are on version 8.21,
Dual 2.8GHz XEON processors, 4 GB RAM. Memory utilization is
around 1GB total. Is there a way to
throttle the POP3 service to use less processor? I have around 3,000 users
currently on the server and am looking at moving our additional 3~5,000 users to
this server from Merak shortly. How to I keep POP3 from stealing so much
processor? Thanks! John
Queen |
- RE: [IMail Forum] POP3 Service processor utilizati... GlobalWeb.net Webmaster
- Re: [IMail Forum] POP3 Service processor util... Matrosity Hosting
- RE: [IMail Forum] POP3 Service processor util... John T \(Lists\)
- RE: [IMail Forum] POP3 Service processor util... Daniel Donnelly
