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Squeezeframe

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Reply with quote  #1 
Sorry if I am duplicating but I did not see this topic when searching.

My 2012 R2 print server occasionally locks at 100% CPU. When you can finally login not much can be done.  Getting in line for a command or menu is nearly impossible.  When the Task Manager comes up you can see multiple entries of Service Host.  The Spooler doesn't go down, it times jobs out.

The web offers many suggestions but maybe I'm just a bad Googler.  I've tried the advice without luck.  You cannot restart the Service or Stop/Start the Spooler.  We don't download or install updates on this server anymore because it's become so finicky so that's out.

Making troubleshooting hard is I've seen 5858 errors in my logs without any system lock.

The only resolution to date is wait, which we cannot afford to do or Restart the guest operating systems thru vmware, bringing up its own error.  It comes up fast and runs perfectly for an undetermined amount of time.

We do see some .dll language files that don't load occasionally but I would think a bad driver is a bad driver and in my case there is no indication of where to start looking.

There is a project to create a new server with Server 2016 and the latest drivers we can find and maybe that will stop the bleeding but in the mean time.

5858 Error - 2020-03-13 14_56_57-Window.png  Critical 41 - 2020-03-13 14_48_55-Window.png

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dennis-360ict

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Reply with quote  #2 
We've had a lot of problems with wmi in windows. Basicly when wmi has too much load, it just breaks down. if we do load tests on windows desktops on terminal servers, wmi is the first to break down with basicly the same symptoms. The Hyper-v management tools used to have similar problems.

There might be a root cause for your problmen, but you might get away with just adding more resources like cpu/mem. What also migt help is killing the wmi processes in the task manager when you have a console session. wmi just restarts and you probably won't even notice it. If that helps, you can set triggers on high cpu load to kill the process.


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Squeezeframe

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Dennis,

I've asked for more resources but am met with resistance, why has it run so well, so long?

When I lock up I cannot restart the process/service as the high CPU prevents even a Ctrl-Alt-Del from appearing.

Thank you for trying to help,

John
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dennis-360ict

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Reply with quote  #4 
Well, something has changed. Maybe an update that handles wmi/printing differently,  a user who's report just got bigger, etc. etc. Thats what i ment with finding the root cause, but that can take a while.

We've had the same on our RSDH servers. We started out with a max of 150 users, it went down to 130 and now we are at 100 users for a maximum. Updates, but mostly updates on the user software is to blame. Which is fine i think, every 5 years we move to new hardware and the capacity just doubles or triples, you see the same with the requirements of windows itself..

You might wanna try adding resources just to test if it would fix things?

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Squeezeframe

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Reply with quote  #5 
Dennis,

Thank you for the clarification as it happened again yesterday with nothing, at least that I can find, in the Administrative or WMI logs. Another hard shutdown and restart through vm-ware was decided on, not from me, and that cannot be good on the OS I wouldn’t think.

We’ve been asking to create new print servers for a while but something always pushes it to the back burner. Maybe we can get it done now.

John
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dennis-360ict

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