How to identify which application/driver/process is causing the non paged pool leak

Posted on 2008-06-17
Medium Priority
Last Modified: 2008-07-01
Hi Experts,

One of my  servers is having a non paged memory leak (in the event viewer I can find errors source:srv eventid 2019  The server was unable to allocate from the system non paged pool because the pool was empty).
The server is running windows server 2003 SP1 (IBM hardware  Xseries366) I have already used the poolmon utility to capture the poolsnap and I identify that there is a leak in the following tags :  AFDC,AFDE and FILE

Anyone have more knowledge about those tags (whats the application/etc..)? And I will appreciate if you can guide me on how to solve the leaking in those tags (installing the latest firmware?)

I appreciate any help,

Boaz Galil:
Question by:dpatel_team
  • 3
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Author Comment

ID: 21819614
any idea on this issue?
LVL 39

Expert Comment

ID: 21820576

Author Comment

ID: 21837777
Yes ofcourse I used Poolmon - with Poolmon I identify that I have a leak at the following pools - AFDC/AFDE/FILE , but what is the next step ?
LVL 39

Assisted Solution

ChiefIT earned 2000 total points
ID: 21838253
According to this article the AFDC and AFDE files might be a Heuristic virus. Heuristic, by definition, is a loose practice to a solution. So, this may be a viru in its infantcy, (a trial and error method to create a virus if you will). If your AV software is set to scan for Heuristic viruses, your AV software may be chewing on those files that and causing a memory leak.


How is this important?
I love this article that is real and to the point. No AV package is 100%. Scanning for Heuristic viruses can warn you, but most likely a AV product will not delete the suspected file until it becomes a full blown virus. What I like about this article is that it points out best met computing practices is the best tool to prevent viruses while a AV/AS package is still important.

In your case, I would look at a cleaning tool for w32\downloader and its variants. This might be a good start.

It is not uncommon that a Heuristic scan causes a memory leak because the AV package doesn't know what to do with it.

Accepted Solution

dpatel_team earned 0 total points
ID: 21846418
The problem was solved by updating the IBM drivers,

I guess thats the first thing you need (updating drivers) to do whenver you bump into a non-page pool leak...

Thanks guys for your help.

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