cygwin rsync over ssh very slow

Posted by Waleed Hamra on Super User See other posts from Super User or by Waleed Hamra
Published on 2012-11-30T09:31:47Z Indexed on 2012/11/30 11:10 UTC
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I have 2 machines running Windows Xp SP3. I have cygwin installed on both, version 1.7. I have rsync and ssh installed on both, and configured using default settings as per ssh-host-config and ssh-user-config programs provided.

I moved the public keys into their respective locations, and basically ssh is working fine. i began an rsync operation, using:

rsync -av --delete --hard-links local_dir username@other_machine:/some_dir

well... on both machines, the processor is running near idle, no heavy usage. I checked IO using process explorer on both machines, and that too is at normal levels (1~2 MB/s), so I can't see where the bottlenecks are, because network performance is aweful. I'm not going over 1MB/s... when a normal file copy using windows sharing achieves some ~10 MB/s..

What could be wrong?

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