Very bad performance when copying large files from windows to samba-share

Christopher R. Hertel crh at
Mon Apr 15 08:00:02 GMT 2002

David Collier-Brown wrote:
> "Christopher R. Hertel" wrote:
> > be 'rabbit pellet' transfer we dug into a while back?
> > If so, using security=server should also be avoided to avoid the
> > problem.
> >
> > The problem in this case (for the rest of our viewers) is that
> > Windows Explorer (the GUI) detects subtle timing delays and will
> > slow itself down.  It sends the file using small packets, sends a
> > flush after each packet, and requires an ACK after each write and
> > each flush.
>         Just out of curiosity, what did security=server contribute:
>         added latency in some obscure part of the process???

As far as we could tell...  yes.  ;)

I really should have documented that whole episode.

Chris -)-----

Christopher R. Hertel -)-----                   University of Minnesota
crh at              Networking and Telecommunications Services

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