[THIN] Re: Server farm freezing
- From: Adam.Baum@xxxxxxxxxxxxxx
- To: thin@xxxxxxxxxxxxx
- Date: Thu, 25 Sep 2003 09:07:44 -0700
There is also 824309. I have a simliar problem to that below, but it only
affects new logons. You enter credentials, but never get a desktop.
Existing sessions may, or may not, slow down a bit. I haven't called in
yet for the fix because a pre-req is SP4.
adam
"Foote, Eric"
<EFoote@xxxxxxx> To: <thin@xxxxxxxxxxxxx>
Sent by: cc:
thin-bounce@freel Subject: [THIN] Re: Server farm
freezing
ists.org
09/25/2003 08:38
AM
Please respond to
thin
There is a Microsft HF that fixes a freezing problem that occurs when other
users log on.
324446 I think.
Eric
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of David E. Payne
Sent: Wednesday, September 24, 2003 5:13 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Server farm freezing
We do have the "my documents" and "desktop" folder all being
redirected to the user home directory on a w2k file server. The
attempt is to minimize the instances where users are losing files by
saving documents anywhere.
We've also got a c/s app that accesses a SQL database directly. I'll
investigate both the f/s and db server for symptoms of being
"hammered".
-dave
From: Mack, Rick [mailto:RMack@xxxxxxxxxxxxxx]
Sent: Wednesday, September 24, 2003 2:30 AM
To: David E. Payne
Subject: RE: [THIN] Server farm freezing
Hi Dave,
The uuencoding looks like OWA gone bad ;-)
But back to your problem...
The fact that the systems recover when you pull the network makes
make me almost certain that one of your back-end systems is getting
too sluggish ot too hammered (your file server).
Things that I regularly do (on the back end file servers!) is define
and increase maxmpxct/maxworkitems, make sure virus checking software
is set to inbound checking only, check to make sure nothing else is
hammering the file servers (eg backup jobs gone overtime) and make
sure that you haven't got something stupid going on like a
combination of compressed directories/files and virus checking. In a
windows 2000 AD, doing the same on your domain controllers isn't a
bad idea.
If nothing's changed in the last week or so on the back-end, you'll
often find that something new on the TS systems (eg folder
redirection, new apps etc) is hammering the network a lot harder,
precipitating the hangs. The "fix" is usually tuning the back end
systems, or getting a bit smart about where your app writes/reads
temporary files etc. A classic example for me was Corel Draw 9.
This problem isn't hard to cure so hang in there.
regards,
Rick
Ulrich Mack
rmack@xxxxxxxxxxxxxx
Volante Systems
18 Heussler Terrace
Milton 4064 Queensland, Australia
tel +61 7 32467704
-----Original Message-----
From: David E. Payne
To: thin@xxxxxxxxxxxxx
Sent: 24/09/2003 1:53 PM
Subject: [THIN] Server farm freezing
I'm having a problem with a 4-server farm. Specs: Metaframe XPa SP3
FR3, W2K SP3, IMA database on SQL 2000. Applications: Office, Great
Plains, Medinformatics.
Seemingly randomly, one of the 4 servers will start to lock up.
Sessions will start hanging, the server will become unresponsive, new
sessions will be able to get a logon screen and enter credentials,
but the logon never gets past the greyed logon screen. Eventually,
the other servers will start hanging as well, until the whole farm is
down.
While the systems are hanging, we've been able to monitor some
activity. There are no obvious CPU spikes, runaway processes, memory
leaks, or out of control disks. The IMA service and other MF
services will not stop and restart during the freezes, they just hang
when trying to stop or restart them.
The only way we've been able to revive the machines is to 1) reboot,
or 2) unplug the network cable for 20 seconds and plug it back in.
Then, whatever is hanging up the systems releases and we're able to
get users back on the system.
I've put some calls into Citrix on the issue and we haven't been able
to pin it down yet. We rebuilt one system from scratch, and
installed only the main business app on it, and started getting
freeze ups within a couple of days.
I'm looking for any insight into similar problems or recommendations
for avenues of attack for this issue.
Thanks,
-dave
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overcome them. SAVE MONEY by scaling-up rather than buying more servers.
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