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PE,TaskMgr not running on Windows 2003;EventID 333
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molotov View Drop Down
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Topic: PE,TaskMgr not running on Windows 2003;EventID 333
    Posted: 21 May 2009 at 1:32pm
Interesting document:
Detection, Analysis, and Corrective Actions for Low Page Table Entry Issues
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molotov View Drop Down
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 1:30pm
Sorry I missed you last post. I enabled that yesterday before I crashed the server.
In the event the entry was made in the hopes that manually crashing the server would aid in troubleshooting, I don't expect that to help.  In the event the entry was made knowing that a manual crash would of course cause the server to restart and review and respect the TrackPTEs value, then good - it seems that now the server should be ready to bugcheck and provide additional details, when PTEs are sufficiently depleted.  Provided you're OK with that, that is...

From what I recall, there was adequate available physical memory, but the PTEs used to describe that memory were likely low (since paged and non-paged did not appear to show signs of exhaustion).
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zizebra View Drop Down
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Posts: 150 		Post Options Post Options   Quote zizebra Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 1:20pm
motolov question here.
Is it practical to conclude from yesterdays poolmon logs I uploaded that, memory available according to both logs is 33Gb yet the system could no longer allocate memory (no more ptes)

Sorry I missed you last post. I enabled that yesterday before I crashed the server.


Edited by zizebra - 21 May 2009 at 1:24pm
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Posts: 150 		Post Options Post Options   Quote zizebra Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 12:55pm
Having read these articles you referred here, I have another lead to check. The performance of all servers. I Have 7 virtual servers with 36Gb of memory and I have 7 other server with 8Gb memory and 7 others with 1Gb. Given the facts presented in the docs have to check the performance  history of each of these classes.
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 12:16pm
This:
 
In conjunction with setting REG_DWORD TrackPTEs to 1 in [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
 
May prove helpful, if you're willing to reboot the server after making the change, and then wait for the server to crash... Ermm
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molotov View Drop Down
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 12:03pm
Not sure - early reboot during dump generation?  Corrupted disk drivers in memory?  Not enough system resources to be able to write the dump?
 
Also of potential interest...
Free System Page Table Entries (PTEs)
Possible Cause: Too much physical memory...
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zizebra View Drop Down
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Posts: 150 		Post Options Post Options   Quote zizebra Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 11:54am
let me see on that. Since we are using virtual machines. They must not be very different. On the keyboard crash method what do you think is causing incomplete dump
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 11:43am
According to TechNet (for Exchange, mind you), warning is 8000 free PTEs, critical is 5000 free PTEs.
Ruling Out Memory-Bound Problems
Isolate the causes of PTE exhaustion, which is not as straightforward as isolating the cause of paged or nonpaged pool exhaustion. There is no tool such as MemSnap to track PTE consumption. Only general corrective actions can be taken to resolve a PTE exhaustion scenario.
PTE leak cases
 PTE exhaustion due to a leak can be isolated using Performance Monitor (using the counters described above that are associated with free system PTEs). A PTE leak will show itself as a continuous depletion of Performance Monitor Memory\Free System PTEs over several days. Contact Microsoft Product Support Services for assistance with diagnosing PTE leak conditions.


You could try to isolate the driver by comparing what loaded drivers (versions, etc.) are different between the two systems...
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Posts: 150 		Post Options Post Options   Quote zizebra Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 11:35am
So far no negative values. I have been monitoring other servers. Other servers seem to be keeping the same values. While this one server is on steady downward trend.
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Posts: 17492 		Post Options Post Options   Quote molotov Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2009 at 11:28am
Keep an eye on that value... I take it the other server is not experiencing the same rapid decrease in the number of free PTEs...

snapshots for poolmon.
Is the MFE0 tag for non-paged showing goofy values (negative allocs / frees, etc.)?
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