* Alexis Gallagher (2004-07-12 19:46 +0200) > I am finding that rsync+ssh is giving extremely slow file transfers. But > this slowdown is hitting not when it needs to send data over the > network, but when it applies the rsync algorithm which is supposed to be > faster than sending all the data over the network. This is very puzzling. > > For a benchmark, I tried transfering a 5.4 MB mp3 file three different > ways. Here were my results, as reported by 'scp -v' and 'rsync > --progress --stats': > > scp: 311000 B/s > rsync (file not there): 309000 B/s > rsync (file already there): 741 B/s > > When the file is alredy there, rsync reports a speedup of about 70. > (When the file is not already there, the speed up is 1, of course.) I am > running rsync over ssh with pre-generated keys installed in my .ssh > directories.
rsync under Cygwin is extremly slow and CPU intensive. For example a simple script that syncs my dot files from my local NetWare server takes 1:10 minutes to run and eats about 60% CPU while on my Gentoo box (which has exactly the same hardware) it takes 7 seconds and 2% CPU. Try disabling checksumming, zipping and transfer the whole file ('-W'). Try it without ssh. Thorsten -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/