Showing posts with label Cache Manager. Show all posts
Showing posts with label Cache Manager. Show all posts

Tuesday, September 6, 2016

Waiting for concurrent page fault completion

An interesting call stack when a thread waits in a page fault for another thread completing paging data from a file

00 nt!KiSwapContext
01 nt!KiSwapThread
02 nt!KiCommitThreadWait
03 nt!KeWaitForSingleObject
04 nt!MiWaitForCollidedFaultComplete
05 nt!MiResolveTransitionFault
06 nt!MiResolveProtoPteFault
07 nt!MiDispatchFault
08 nt!MmAccessFault
09 nt!KiPageFault
0a nt!memcpy
0b nt!CcCopyBytesToUserBuffer
0c nt!CcMapAndCopyFromCache
0d nt!CcCopyReadEx
0e nt!CcCopyRead
0f nt!FsRtlCopyRead
10 ***
11 ***
12 ***
13 nt!NtReadFile
14 nt!KiSystemServiceCopyEnd

Friday, June 17, 2016

Caching and file object reference in Windows.

This is how the last reference to a file object backing cached file data is being released by the kernel. In that case this was a network filesystem

19 nt!IofCallDriver
1a mup!MupiCallUncProvider
1b mup!MupStateMachine
1c mup!MupClose
1d nt!IofCallDriver
1e nt!IopDeleteFilec
1f nt!ObpRemoveObjectRoutine
20 nt!ObfDereferenceObjectWithTag
21 nt!ObfDereferenceObject
22 nt!CcDeleteSharedCacheMap
23 nt!CcWriteBehind
24 nt!CcWorkerThread
25 nt!ExpWorkerThread
26 nt!PspSystemThreadStartup
27 nt!KiThreadStartup