On Wednesday, Jan 29, 2003, at 00:11 Australia/Sydney, Broderick, Sean
wrote:

Hi,

The CPU usage (%sys) is extremely high, like 80 - 90%, on the TSM
server
(Sun V880 running TSM v5.1.5) during the backup window. Particularly
when
TDP R3 clients are attempting their SAP backups via backint / brbackup
and
as such the throughput is extremely poor (<9MB/s direct to disk cache
via
gigabit network).

How are your disk stgpool volumes configured? Is the system paging? How
much
RAM do you have? Any errors on your network interfaces? How fast does
an ftp
run?

Since the vast majority of the work done by dsmserv during backups is
I/O,
a high sys% CPU is to be expected. OTOH, our Sun TSM servers can hit 9
MB/s
on 100 Mb ethernet, with much older hardware.

Cheers,
--
Paul Ripke
Unix/OpenVMS/DBA
101 reasons why you can't find your Sysadmin:
68: It's 9AM. He/She is not working that late.
-- Koos van den Hout