[THIN] Re: Server Lockups -- Please Help

Yeah, it did...even breaking the team didn't bring it back.  We had to
disable one in the 6450, and in the 6400 we just pulled them both (looooong
story).  We are currently still working with Foundry on the issue...
apparently we aren't the only one that has had the problem.

Jen

-----Original Message-----
From: Jensen, Jay [mailto:jjensen@xxxxxxxxx]
Sent: Tuesday, October 15, 2002 8:33 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Server Lockups -- Please Help



Jennifer, did you try teaming the NIC's instead of disabling one of them?
If so, did that make your servers hang?

-----Original Message-----
From: Jennifer Booth [mailto:JBooth@xxxxxxxxxx]
Sent: Tuesday, October 15, 2002 10:15 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Server Lockups -- Please Help



Hi Dave -

        Funny... I have had the exact same difficulties on non-Citrix boxes
here:  6400, 6650 & 6450.  What kind of switches are you running?  We ended
up having to yank one or both of the Gig NICS in order to get a working box,
and the problem existed on both Intel and Broadcom NICs.  It looks like now
the problem may be within our Foundry switches and/or the configuration.  We
were unable to get a good answer from Dell, we had to get updated drivers
from Intel's site.  Even still, we ended up rebuilding the 6400 7 times,
doing all the same things you have tried.  But if we ran with only one of
the NICs, we were ok.

        Let me ask you this too:  When you reboot the box, how long is it
taking to give you the logon screen?  Then when you login, how long is it
taking to get a desktop?

        This may be a longshot, but it's something!  Hope it gives you some
clues...

Jennifer

Jennifer Booth
Systems Engineer
Viejas Enterprises
Alpine, California
jbooth@xxxxxxxxxx


-----Original Message-----
From: DMelczer@xxxxxxxx [mailto:DMelczer@xxxxxxxx]
Sent: Tuesday, October 15, 2002 5:05 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Server Lockups -- Please Help



I thought it could be very high CPU as well...unfortunately, every metric I
can measure tells me that this isn't the case...I do have Trend
ServerProtect running on the box, and this is a change from the Norton 5.0
AV I was running on the older servers.  I'm only scanning incoming, though.
The CPU and memory hit are minimal.  Even with 20 users on the box, CPU
utilization is still under 10%...I never see a spike or a drop...all of the
sudden, everything just times out...the funny part is that I can't even get
to access the services remotely...server manager times out as well.  I think
I mentioned this in a previous post, but it's almost like the RPC services
just hang...along with explorer...on the console, I can't even CTRL-ALT-DEL
to get to a login screen.  If I'm logged in during the crash, no screen
redraws are done at all.  I can't even CTRL-ALT-DEL to get to task manager.

The Dell 1650 are wonderful machines if you can keep the Windows OS running
on them...

Oh, well...hopefully the paging executive and SP2 stuff works.  Things are
looking good so far...

-Dave Melczer


-----Original Message-----
From: Mack, Rick [mailto:RMack@xxxxxxxxxxxxxx]
Sent: Monday, October 14, 2002 5:36 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Server Lockups -- Please Help


Hi Dave,

Saw something like it last week. Really neat. Asked the customer had
anything changed?

I was told no. ;-)

Server was slowing to a crawl and then stopping, I was monitoring almost
everything at the time. CPU fell to next to nothing, no i/o, no network
traffic to speak of.

Turned out that an application (Corel Draw 9) was absolutely thrashing the
file/print server on initialisation (coreldraw.ini in users' home
directory). End result was full network i/o request queue and at that point
ALL server i/o stopped. Customer had been rebooting at this point to get
things going again.

Left the server hung and ran srvmgr srvmgr on the file/print server,
disconnected all sessions. This "fixed" things temporarily. Upped maxmpxct
and maxworkitems on the f/p server. Things got better but not perfect.

Noticed Netshield on F/P server, NICs seemed different. When did thisd
happen? Last week.

Turned off real-time virus checking on F/P server. Problem gone. 

But really, aside from the new NICs, virus checking and recloned servers,
everything was the same. Sigh.....

Regards,

Rick

Ulrich Mack
rmack@xxxxxxxxxxxxxx
Volante Systems
18 Heussler Terrace, Milton 4064
Queensland Australia
tel +61 7 32467704



-----Original Message-----
From: DMelczer@xxxxxxxx [mailto:DMelczer@xxxxxxxx] 
Sent: Tuesday, 15 October 2002 4:15 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Server Lockups -- Please Help



I've never seen this one before in 6 years working with Citrix products,
perhaps someone out there can help:

Hardware:       2 new Dell 1650 PowerEdge Servers
                Dual 1.2 Ghz processors
                2 Gig RAM
                Intel Pro NICs (2) teamed copper gigabit

Software:       Microsoft NT4 Terminal Server Edition, SP6a
                MetaFrame XP 1.0 Service Pack 1 / FR1

Problem:        The system is fine and stable for hours on end, even under a
moderately heavy load (9 hours, 18+ users concurrent).  Then, all of a
sudden everything just stops -- server can be pinged, and mouse movements
allowed on the console, but nothing else.  All sessions refuse to screen
paint and lock up.  The only way to get the server out of this mode is to
power it off and power it on.

Solutions tried:        

- Removed all printer port monitors
- Recreated local host cache
- Reinstalled MetaFrame XP, FR1, Hotfixes 1, 2, 8, 11, 12, 16.
- Reinstalled SP6a for TSE
- Re-created ICA connection in Connection Config Application
- Set Priority on the teamed NICs
- Updated drivers for NICs
- Tried removing NICs from team and running with a single NIC active (tried
both NICs)
- Tried to hard-code NIC speeds and duplexes to avoid autosensing (can't do
it -- Intel PRO software doesn't allow hard-coding of gigabit...autosense
only...allows hardcoding of 10/100 at full/half, just nothing gigabit)

Has ANYONE seen anything like this before?  I'm preparing myself for the
infamous pinkslip...

Any suggestions welcomed, on or off list.

-Dave Melczer
dmelczer@xxxxxxxx



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