There are a number of things to check :

1) Is the TSM database spread out over multiple disks ? Having the database
spread over multiple disks will result in faster read/writes to disk and
improve the performance.

2) Check the top ten processes on the server when the paging space is high :

ps -A -Fpcpu,runame,pid,tty,args | sort -n  -r | head

3) Run the following commands throughout the day to see the server stats and
disk usage :

vmstat 2 10

iostat 2 10

Rich



-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Miles Purdy
Sent: Monday, September 20, 2004 9:04 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: AIX Paging Space Utilization


I have also seen paging space issues my server that runs only TSM.

OS: AIX 5.1 ML 6
TSM server: 5.1 and 5.2.3.1
Memory: 2GB
Space: 2 GB (now 3 GB)

We have logged cases with IBM, to no avail. I have check all the settings
myself. IBM has checked everything and found no problems. I'd also be
interested in any help.

Miles



>>> Curtis.Stewart AT LAWSON DOT COM 16-Sep-04 4:51:20 PM >>>

I'm running into issues with paging space utilization on my AIX based TSM
system.

Host OS                AIX 5.2
TSM Version                5.2.2.3
Physical Memory        12GB
Dual CPU P630
TSM Database 1         36.6GB
TSM Database 2        59.7GB

I have two TSM instances running on the same box and recently (after a
reboot) I've seen the paging space utilization increase dramatically. I've
gotten to the point where I have to stop one of the instances of TSM and let
the system recover paging space, then restart TSM.  Anyone have any tips? I
do think I may have my bufpoolsize settings a little high, at 1GB for each
instance. I haven't experimented with lowering these settings. My cache hit
is 99+ACU- consistently.

TSM Options: See Attached File (options.txt)
AIX Memory Settings: See Attached File (memsettings.txt)

Curtis Stewart
curtis.stewart AT lawson DOT com


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