[THIN] Re: Server Lockups -- Problem Solved?

  • From: DMelczer@xxxxxxxx
  • To: thin@xxxxxxxxxxxxx
  • Date: Wed, 16 Oct 2002 08:02:57 -0400

Well, I'm extremely pleased to say that we've passed the critical point and
gone a complete cycle without a server lockup.  

For those interested, or experiencing similar difficulties, I can say that
if the server is indeed fixed, then the fix was one of two things:

- Installing Service Pack 2
- Re-enabling the Paging Executive (THANK YOU ROB BEEKMANS!) -- change
HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management\ to
the following:

DisablePagingExecutive -- REG_DWORD:  Value 0x0

I'm going to continue to monitor and if problems arise again, I'll let
everyone know.

I just want to extend a very sincere "Thank You" to everyone who offered
suggestions.  This problem was almost impossibly difficult to troubleshoot
from the beginning, but the creative members of this list have come through
once again.  Other members may not be able to fully appreciate the value of
this list until they run into a difficult problem, but I can say that the
group here is the best I've ever been a part of.

Thank you to one and all for saving my job...especially Rob -- you're
definitely "da Man!" and I do owe you a beer...

-Dave Melczer

-----Original Message-----
From: DMelczer@xxxxxxxx [mailto:DMelczer@xxxxxxxx]
Sent: Monday, October 14, 2002 2:15 PM
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


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