memory load control

[Guest_imported]

Guys.........
i have just install PDT to diagnose
performance problems on my B50...
It's reports said:
"There is an evidence for virtual memory
contention:yet memory load control is disabled"
My question is that
what is memory load control
how i can enable it
Hope to get reply from u experts>
Suresh Meneak

 

[vickersdc]

If you're system has over 128MB of RAM, then you don't need to worry about this.

If it has under this amount then the system may be thrashing, which may be disabled by...

/usr/sample/kernel/schedtune -h 0

...(for systems with over 128MB, thrashing is disabled anyway).

You can ascertain if the system is thrashing by calculating the "thrashing ratio" which is...

T=page_outs / page_reclaims

...(get these figures from vmstat: po and fr columns respectively).

For PDT information, check out...

http://anguilla.u.arizona.edu/doc_link/en_US/a_doc_lib/aixbman/prftungd/frame12_toc.html

and select chapter 12.

Hope it helps.
Dave V.