Geoff,

Another place to look is at your disk subsystem - from the host controller
all the way to physical disks.  I've seen disk units having problems, but
no errors being recorded on the host (TSM) server.   If you start having to
retry every disk operation a few times, performance degrades significantly.

Nick Cassimatis

----- Forwarded by Nicholas Cassimatis/Raleigh/IBM on 08/03/2006 09:38 AM
-----

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 08/03/2006
07:08:52 AM:

> Geoff -
>
> If TSM is slow to respond to anything on that system, it is likely
> that the system in general is hurting, perhaps due to a runaway
> process or virtual storage shortage.  Your AIX Error Log and /var/adm/
> messages are worth checking, as well as 'topas'.  If it's only TSM,
> then there may be a looping thread in the server process.  Do Query
> PRocess and Query SEssion to see what's happening, and the Activity
> Log for general circumstances.  Don't overlook network causes...where
> other people in your shop may be pondering the same problem.
>
>    Richard Sims