[Samba] "file not found" under high-contention

starlight.2012q2 at binnacle.cx starlight.2012q2 at binnacle.cx
Fri May 11 09:21:44 MDT 2012


At 07:49 AM 5/11/2012 -0700, Jeremy Allison wrote:
>On Fri, May 11, 2012 at 10:39:57AM -0400, 
>Need to see the over the wire trace to really
>know I'm afraid.

Ran 'procmon'.  Here is a trace of the Samba scenario:

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryStandardInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000141
AllocationSize:	1,048,576
EndOfFile:	8,546
NumberOfLinks:	1
DeletePending:	False
Directory:	False

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryFileInternalInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000097
IndexNumber:	0x81f

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryBasicInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000124
CreationTime:	12/8/2010 15:23:15
LastAccessTime:	5/11/2012 11:11:36
LastWriteTime:	12/8/2010 15:23:15
ChangeTime:	12/8/2010 15:23:15
FileAttributes:	N

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryStandardInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000180
AllocationSize:	1,048,576
EndOfFile:	8,546
NumberOfLinks:	1
DeletePending:	False
Directory:	False

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryFileInternalInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000083
IndexNumber:	0x81f

Date & Time:	5/11/2012 11:11:36
Event Class:	File System
Operation:	QueryNameInformationFile
Result:	SUCCESS
Path:	\\siobhan\d\df\sr\inc\df_types.h
TID:	5608
Duration:	0.0000078
Name:	\siobhan\d\df\sr\inc\df_types.h

====================

And here is the trace of the good, NTFS scenario:

Date & Time:	5/11/2012 11:18:46
Event Class:	File System
Operation:	QueryFileInternalInformationFile
Result:	SUCCESS
Path:	C:\flume\env\kf_i_errlog
TID:	6804
Duration:	0.0000024
IndexNumber:	0x1400000001557f

Date & Time:	5/11/2012 11:18:46
Event Class:	File System
Operation:	QueryBasicInformationFile
Result:	SUCCESS
Path:	C:\flume\env\kf_i_errlog
TID:	6804
Duration:	0.0000020
CreationTime:	9/27/2010 21:41:52
LastAccessTime:	9/27/2010 21:41:52
LastWriteTime:	8/15/2001 13:41:14
ChangeTime:	5/11/2012 11:18:35
FileAttributes:	A

Date & Time:	5/11/2012 11:18:46
Event Class:	File System
Operation:	QueryStandardInformationFile
Result:	SUCCESS
Path:	C:\flume\env\kf_i_errlog
TID:	6804
Duration:	0.0000022
AllocationSize:	0
EndOfFile:	0
NumberOfLinks:	2
DeletePending:	False
Directory:	False

Date & Time:	5/11/2012 11:18:46
Event Class:	File System
Operation:	QueryFileInternalInformationFile
Result:	SUCCESS
Path:	C:\flume\env\kf_i_errlog
TID:	6804
Duration:	0.0000017
IndexNumber:	0x1400000001557f

Date & Time:	5/11/2012 11:18:46
Event Class:	File System
Operation:	QueryNameInformationFile
Result:	SUCCESS
Path:	C:\flume\env\kf_i_errlog
TID:	6804
Duration:	0.0000023
Name:	\flume\env\kf_i_errlog




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