Hi all ADSM-ers

We are installing ADSM on AIX

Levels :  AIX       4.1.5
          ADSM-Server   V2R1L5M13
          ADSM Client   Level 7

and we see, that ADSM doesn't use all the speed of hardware.
We have an SSA-Subsystem and DLT7000 drives and we dont get the expected
I/O rates with ADSM.
Our DLT7000 drives perform with about 10-12 GB/hour with compression
enabled
(write speed is 5 MB/sec. w.o. compression so we should get at least 18
GB/hour).
The same effects we see with our SSA-Disks.
They'll never perform over 4MB/sec and in middle with 2.5 -3.5 MB/sec with
ADSM
and no other I/Os are running on that machine.
In an native environment(cp,dd,...) we get better device rating's with the
same devices,
so its our opinion,that it's a problem with ADSM.
Maybe this is the way,how ADSM works , but I'm interested in other
Benchmark Data
with adequate devices .

Has anybody tuning tips for me.


regards
D. Pohl
(ADSM-Support)
V.I.S. Informationssysteme GmbH
Germany

please respond to : dirk_pohl AT visinfosys DOT com
               or to the adsm-l