[Samba] performance regression between 30.14a and 3.0.20

Jeremy Allison jra at samba.org
Fri Apr 28 19:49:35 GMT 2006

On Wed, Apr 26, 2006 at 01:20:23PM -0400, Greg Dickie wrote:
> OK all my gobbledy-gook stats aside..... sorry for being incoherent.
> Stracing reveals that files after 3.0.20b are opened with O_SYNC. Could 
> that be the source of the problems? I'll try and find that and test it 
> when I get home but the question is is it necessary?

OK, I just confirmed that iometer opens the files it tests
with FILE_WRITE_THROUGH set on the NTCreateX call. That
would do it....

The fix now in SAMBA_3_0 should fix this problem.


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