Slow write performance with Win 98 and Samba (fwd)

[Ryan Fox]

I've put up a couple tcpdump logs of uploading/downloading a 59MB .tar.gz
file.
The computers involved are com-rfox, a WinME box, and willy, a linux
2.4.2-xfs, samba 2.2.0 box.  (FYI:  My samba does have the recycle bin
patches that I requested on the list a couple weeks ago.)
My setup meets 5 of the 6 posted requirements to reproduce this problem.  I
do not, however, have security=server, I have security=user.  If the logs
don't show the problem being reproduced, and setting security=server and
letting it fall back to security=user may show it, let me know, and I'll
change my config.

http://rfox.noguska.com/upload.txt
http://rfox.noguska.com/download.txt

Hope this helps someone.
Ryan


----- Original Message -----
From: "Christopher R. Hertel" <crh at nts.umn.edu>
To: "Scott Prather" <sprather at austin.ibm.com>
Cc: "Christopher R. Hertel" <crh at nts.umn.edu>; "David Collier-Brown"
<davecb at canada.sun.com>; <samba-technical at lists.samba.org>;
<mgahagan at redhat.com>; "Medha Date" <mdate at austin.ibm.com>
Sent: Thursday, June 21, 2001 2:04 PM
Subject: Re: Slow write performance with Win 98 and Samba (fwd)


> > Actually, in my tests, I did see the problem with security=user.
>
> Can you cat a TCPDump, Ethereal, or even NetMon capture and put it
> somewhere I can get hold of it?  Let me know if you want to send it via
> E'mail and I'll send you another address.
>
> Thanks!!
>
> Chris -)-----
>
> > On Thu, Jun 21, 2001 at 12:44:38PM -0500, Christopher R. Hertel wrote:
> > > > There is a way to work around the delayed tcp ack problem.  Send a
> > > > SMBkeepalive packet to the client whenever there is a short write to
the
> > > > server.  It is not a pretty fix, but it makes Windows happy and
solves
> > > > this problem (this assumes you cannot turn off delayed ack on the
OS).
> > >
> > > We need to keep this in mind if the delayed-ack turns out to be the
> > > entire problem.  I believe that it is a major part of the problem, and
> > > the Sun folk should get a lot of credit for helping out on this.
> > >
> > > Still, I'm confused by the fact that security=user does not cause this
> > > situation to occur.
> > >
> > > Chris -)-----
> > >
> > > --
> > > Christopher R. Hertel -)-----                   University of
Minnesota
> > > crh at nts.umn.edu              Networking and Telecommunications
Services
> > >
> > >     Ideals are like stars; you will not succeed in touching them
> > >     with your hands...you choose them as your guides, and following
> > >     them you will reach your destiny.  --Carl Schultz
> >
> > --
> > Scott Prather
> > MCSE, MCP+I
> > Software Engineer
> > AIX PC Interoperability
> > sprather at austin.ibm.com
> > (512)838-3313
> >
>
>
> --
> Christopher R. Hertel -)-----                   University of Minnesota
> crh at nts.umn.edu              Networking and Telecommunications Services
>
>     Ideals are like stars; you will not succeed in touching them
>     with your hands...you choose them as your guides, and following
>     them you will reach your destiny.  --Carl Schultz
>
>