[Samba] performance regression between 30.14a and 3.0.20

Greg Dickie greg at max-t.com
Fri Mar 31 01:04:21 GMT 2006

Hey Jeremy,

  This happens when testing under iometer. I can give you the exact
paramaters if you want.


On Wed, 2006-03-29 at 09:50 -0800, Jeremy Allison wrote:
> On Wed, Mar 29, 2006 at 11:03:02AM -0500, Greg Dickie wrote:
> > 
> >   Suddenly occurred to me that I wasn't seeing the performance I used to
> > while running 3.0.21c. Went back and tested 3.0.14a on the exact same
> > configuration and boom, smaller writes (8K) were about twice as fast. I
> > narrowed it down to a change between 14a and 20 but there were alot of
> > changes in there.
> > 
> > Can anyone think of what this could be?
> How are you testing this ? If you can give me the exact same test
> config I can run under cachegrind and it'll tell me exactly where
> the extra time is being spent between the 3.0.14a and 3.0.20 versions.
> Thanks,
> 	Jeremy.

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