AIX - Swap space issue

There's a high paging swap process happen everyday from 00:00 to 15:00. It impacts all the application slow down. Could I know how could I trace and troubleshoot what process or application causes the high paging swap?
My system currently running on AIX 5.3 ML7. The system memory is 11840Mbytes and the paging space available is as below:-
Page Space      Physical Volume   Volume Group    Size %Used Active  Auto  Type
hd6             hdisk0            rootvg       12288MB     1   yes   yes    lv

This system is a client server for tsm backup. Thx in advance.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

If it starts every day at 00:00 excact then you might want to check the crontab for scheduled tasks:

crontab -l | grep "0 0"

You can also use tools like topas, nmon, top to display realtime performance.

For top 10 processes real time:
ps -e -o pcpu -o ruser -o args|sort -nr|grep -v %CPU|head -10

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
terrencetanAuthor Commented:

I capture the nmon snapshot on the CPU Utilization and the Memory Utilization of the system. Could you pls help veriify from the snapshot I attached, could it be the page steals, page scans and page fault value too high?

What I can do to minimize the huge swapping of paging space in the system? Thx in advanced again.

From that I see on the the screenshot only process dsmc from TSM (PID 635040) seemed to page at that moment.
could it really be that your TSM backup takes such a long time (15 hrs.)?
It's not uncommon for dsmc to consume large amounts of memory.
If this is the client scheduler process, you can restart it periodically (if no activity, of course).
Tip: Type a '4' at your nmon session above to have the 'top' display sorted by size, so you can identify other processes with high memory usage.
terrencetanAuthor Commented:
OK. I'll monitor the swap space and top processes working on system during the high paging space swapping process. Thanks a lot.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Unix OS

From novice to tech pro — start learning today.