Opened 12 years ago

Closed 12 years ago

#1931 closed bug (fixed)

Negative Modified Page Queue Count

Reported by: bonefish Owned by: axeld
Priority: critical Milestone: R1/alpha1
Component: System/Kernel Version: R1/pre-alpha1
Keywords: Cc:
Blocked By: Blocking:
Has a Patch: no Platform: All

Description

hrev24417, VMware

While running a relatively harmless Perl test the page writer suddenly and unmotivatedly started to hog the CPU. As the attachment shows the count of the modified queue has become -1, which causes the semaphore acquisition to be skipped (sModifiedTemporaryPages is unsigned).

Attachments (1)

kdl-session-berserking-page-writer (4.6 KB ) - added by bonefish 12 years ago.

Download all attachments as: .zip

Change History (2)

by bonefish, 12 years ago

comment:1 by bonefish, 12 years ago

Resolution: fixed
Status: newclosed

Probably fixed in hrev24430. That race condition would be a good explanation at least.

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