This is the output of !vm command from an hang dump. The system hangs every 3-4 days.
*** Virtual Memory Usage ***
Physical Memory: 16774339 ( 67097356 Kb)
Page File: \??\C:\pagefile.sys
Current: 68157440 Kb Free Space: 68145560 Kb
Minimum: 68157440 Kb Maximum: 68157440 Kb
Page File: \??\D:\pagefile.sys
Current: 67404556 Kb Free Space: 67394968 Kb
Minimum: 67404556 Kb Maximum: 201292068 Kb
Available Pages: 10629840 ( 42519360 Kb)
ResAvail Pages: 11045894 ( 44183576 Kb)
Locked IO Pages: 0 ( 0 Kb)
Free System PTEs: 37825 ( 151300 Kb) ******* 3334221 system cache map requests have failed ****** Modified Pages: 2113 ( 8452 Kb)
Modified PF Pages: 1744 ( 6976 Kb)
NonPagedPool 0 Used: 0 ( 0 Kb)
NonPagedPoolNx 0 Used: 23925 ( 95700 Kb)
NonPagedPool 1 Used: 0 ( 0 Kb)
NonPagedPoolNx 1 Used: 2738 ( 10952 Kb)
NonPagedPool Usage: -2143215616 (8607006720 Kb)
NonPagedPoolNx Usage: 61170 ( 244680 Kb)
NonPagedPool Max: 522988 ( 2091952 Kb)
********** Excessive NonPaged Pool Usage *****
PagedPool 0 Usage: 68479 ( 273916 Kb)
PagedPool 1 Usage: 29229 ( 116916 Kb)
PagedPool 2 Usage: 2538 ( 10152 Kb)
PagedPool Usage: 100246 ( 400984 Kb)
PagedPool Maximum: 523264 ( 2093056 Kb) ********** 2 pool allocations have failed ********** Session Commit: 11488 ( 45952 Kb)
Shared Commit: 11408 ( 45632 Kb)
Special Pool: 0 ( 0 Kb)
Shared Process: 6450 ( 25800 Kb)
PagedPool Commit: 100336 ( 401344 Kb)
Driver Commit: 2649 ( 10596 Kb)
Committed pages: 6164380 ( 24657520 Kb)
Commit limit: 50615224 ( 202460896 Kb)
My questions are :
- How should I interpret the negative value of NonPagedPool Usage?
- Shouldn’t the sum of “NonPagedPool N Used” equal to NonPagedPool Usage?
- Likewise, shouldn’t the sum of “NonPagedPoolNx N Used” equal to NonPagedPoolNx Usage?
Excessive Non-Page Pool (NPP) Memory Usage of 3.9TB May Be Seen When Using Windbg Build 6.12.0002.633
http://support.microsoft.com/kb/2509968
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