On 6/1/05, Ryan Verner <[EMAIL PROTECTED]> wrote:
> On Wed, 2005-06-01 at 07:01 +1000, Howard Lowndes wrote:
> >
> > Ryan Verner wrote:
> > > On Tue, 2005-05-31 at 22:28 +1000, David wrote:
> > >
> > >>>I have a routine that runs an rsync to sync data from a Linux fs to a
> > >>>vfat fs which I have smbmounted on a linux fs.
> > >>>
> > >>>It runs quite happily for a while, then stalls.
> > >>>
> > >>>the rsync command I an using is:
> > >>>rsync -vrtL --delete /home/ext3fs /home/vfatfs
> > >>>
> > >>>What is the best way to find out why it might be stalling?  I know
> > >>>where, but why.
> > >>>
> > >>
> > >>
> > >>I've had a lot of trouble with rsync stalling. I've managed to cure it
> > >>without understanding the reasons. Try adding --bwlimit=nnnn
> > >
> > >
> > > Sounds like packet shaping somewhere is causing packet loss, which rsync
> > > tends not to handle very well.

This may explain your problem and fits in with a packet shaping issue

http://jared.sonicspike.net/pipermail/adsl-qos/2003-November/000477.html
and this 
http://edseek.com/~jasonb/articles/traffic_shaping/scenarios.html

you may not be shaping with iptables but your net admin may
be shaping you on their switches etc..

> >
> > I wouldn't be expecting packet shaping on a LAN.

Never say never.  A lot of switches are now implementing CoS
boundaries on their user ports.

Then again I could just be firing from the hip ;-) But it is worth a look

-- 
James
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