I was looking into what was causing the lag when I open my samba
(3.0.27a) shares from windows (XP, SP2). I see a lot of consecutive
directory opening. Process Monitor seems to suggests that windows
is being stupid about alternate data streams: it tries to create
directoryname:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d}, fails, and
tries another sixty-ish times before failing and doing the same with
every other directory entry, which can add up to seconds in terms of time.
It seems that ADS support is planned for future Sambas, but in the
meantime, does anyone know of some workaround, server-side or client-side?
Or is this caused by another issue?
Bits of Process Monitor log, for reference: (mildly edited for readability):
(Note that BUFFER OVERFLOW is not an error.
I'd remove the lines, but the functions called may be relevant)
12:20:26.8111613 AM CreateFile O:\technical SUCCESS
12:20:26.8129029 AM ReadFile O:\technical INVALID DEVICE REQUEST
12:20:26.8130925 AM QueryInformationVolume O:\technical BUFFER OVERFLOW
12:20:26.8132141 AM QueryAllInformationFile O:\technical BUFFER OVERFLOW
12:20:26.8156088
AM CreateFile
O:\technical:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d} PATH
NOT FOUND
12:20:26.8159856 AM CloseFile O:\technical SUCCESS
12:20:26.8175923 AM CreateFile O:\technical SUCCESS
12:20:26.8191648 AM ReadFile O:\technical INVALID DEVICE REQUEST
12:20:26.8192031 AM QueryInformationVolume O:\technical BUFFER OVERFLOW
12:20:26.8192252 AM QueryAllInformationFile O:\technical BUFFER OVERFLOW
12:20:26.8228748
AM CreateFile
O:\technical:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d} PATH
NOT FOUND
12:20:26.8235760 AM CloseFile O:\technical SUCCESS
12:20:26.8252307 AM CreateFile O:\technical SUCCESS
12:20:26.8271502 AM ReadFile O:\technical INVALID DEVICE REQUEST
12:20:26.8272061 AM QueryInformationVolume O:\technical BUFFER OVERFLOW
12:20:26.8272290 AM QueryAllInformationFile O:\technical BUFFER OVERFLOW
12:20:26.8291879
AM CreateFile
O:\technical:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d} PATH
NOT FOUND
12:20:26.8294594 AM CloseFile O:\technical SUCCESS
12:20:26.8319192 AM CreateFile O:\technical SUCCESS
12:20:26.8342349 AM ReadFile O:\technical INVALID DEVICE REQUEST
12:20:26.8342734 AM QueryInformationVolume O:\technical BUFFER OVERFLOW
12:20:26.8342952 AM QueryAllInformationFile O:\technical BUFFER OVERFLOW
....and so on.
Regards,
--Bart
