> I recently installed and setup cwRsync on a Windows 2000 Server - > http://www.itefix.no/cwrsync/ -, and I was very impressed. I just > followed the instructions on the website and got it working.=20 > > I am using it to mirror 30Gb's of mailboxes everynight (only grabbing > the changes to each file), from a Windows 2000 box to a Linux box (RH9). > > The nightly replication takes approximately 8 hrs to complete, but the > actual size of the mailbox directory only increases by about 120Mb a > day. There are 750 mailboxes and each mailbox is between 50 and 200Mb in > size. > > I am using the following command line options: > > rsync -avz hostname::MailBoxes /mailboxreplica > > Can anyone recommend ways to speed this up - is there some extra > compression I can use, or a kind of "quick checksum" option that I could > use?
If you are on a fast network, -z will probably slow you down. Rsync + cygwin is typically slow due to the system call overhead in cygwin. There is a performance patch (patches/craigb-perf.diff) included with the 2.5.6, 2.5.7 and 2.6.0 releases that makes a measurable improvement. This patch is now in CVS. So you should build rsync from releases sources after applying the patches/craigb-perf.diff patch (or build from CVS). Or you can try a pre-built executable with the patch, like the cygwin-rsyncd package at http://backuppc.sourceforge.net. Craig -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html