rsync over ssh performance problem in cygwin

[Jim Kleckner]

This sounds a lot like this topic described here:
  http://sources.redhat.com/ml/cygwin/2002-12/msg00690.html

My recollection is that rsync 2.5.6 didn't get the
cygwin patches for buffering applied, sigh.
Look here:
  http://pserver.samba.org/cgi-bin/cvsweb/rsync/#dirlist
for the code base and here:
 
http://pserver.samba.org/cgi-bin/cvsweb/rsync/patches/craigb-perf.diff?rev=1.1
for the buffering patches.

Since this file:
  http://pserver.samba.org/cgi-bin/cvsweb/rsync/fileio.c
still appears unpatched, this suggests that the
performance patches for cygwin still have not been
applied to the code base.

If you want to try out the version that I use with
the buffering patches, you can get it here:
  http://www.kleckner.net/rsync.tgz

I'll leave it there for a month or so.

Good luck - Jim

Dmitry Melekhov wrote:

> Hello!
> 
> We have strange problem with rsync performance.
> 
> We do files syncronization from w2k (cygwin, rsync 2.5.6) over ssh to 
> Linux (rsync 2.5.5).
> 
> We have several  10Mb  files.
> First time, when directory on Linux is empty, all looks OK- 
> syncronization takes about 10 minites.
> But when we try to do this second time, i.e. with files on Linux and 
> windows, synconization takes more than 10
> minites for _file_ !
> And, ssh process on windows eats about 90% of cpu
> Any ideas?
> 
> btw, certanly, linux-linux works ok in the same situation.




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