Rsync - slow performance problem...

Hi,

I am running rsync (rsync-2.6.3-1) on CentOS 4 (2.6.9-11.EL).

I notice that the performance is pretty slow ranges between 2 and 6
MB/s.

The command that I use from a remote machine to this, the archiving
host, is:

rsync -avz -e ssh ./dir archsrv:/archive/DATA


An investigation with top shows that the system is cpu bound rather than
IO bound and that the sshd process is consuming 75% of the CPU compared
to the rsync process which uses about 25%.

Why is ssh using so much CPU? It seems wrong to me. I would expect rsync
to be using most as it has to do compression.

Any Ideas?

Best Regards
--=20

This e-mail and any files transmitted with it are confidential and =
intended
solely for the use of the individual or entity to whom they are =
addressed.
If you have received this e-mail in error please notify the sender =
immediately
and delete this e-mail from your system. Please note that any views or =
opinions
presented in this e-mail are solely those of the author and do not =
necessarily
represent those of Ricardo (save for reports and other documentation =
formally
approved and signed for release to the intended recipient). Only =
Directors
or Duly Authorised Officers are authorised to enter into legally binding
obligations on behalf of Ricardo unless the obligation is contained =
within
a Ricardo Purchase Order.

Ricardo may monitor outgoing and incoming e-mails and other =
telecommunications
on its e-mail and telecommunications systems. By replying to this =
e-mail you
give consent to such monitoring. The recipient should check this e-mail =
and
any attachments for the presence of viruses. Ricardo accepts no =
liability for
any damage caused by any virus transmitted by this e-mail. "Ricardo" =
means
Ricardo plc and its subsidiary companies.

Ricardo plc is a public limited company registered in England with =
registered
number 00222915.
The registered office of Ricardo plc is Bridge Works, Shoreham-by Sea,
West Sussex, BN43 5FG.
=20
--
To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync
Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html