[CentOS] Debugging/optimizing LAN/Fileserver Performance

Tue Aug 21 07:37:25 UTC 2012
Mogens Kjaer <mk at lemo.dk>

On 08/21/2012 09:30 AM, Götz Reinicke wrote:
> 564 root  20   0 98.5m 6872 2968 R 99.0  0.2   1:08.10 sshd

It looks like ssh is the rate limiting step in your rsync.

What cipher are you using for ssh?

I use

rsync --rsh='/usr/bin/ssh -c arcfour128' ...

that helps quite a bit on my hardware, your hardware might do better
with another cipher.

You should check out https://bbs.archlinux.org/viewtopic.php?id=136713 
to learn more about this.

Mogens Kjaer, mk at lemo.dk