From: Darryl Ousterhout (D.Ousterhout@LABSAFETY.COM)
Date: Fri Sep 13 2002 - 10:50:03 EDT
Bill,
I might be way off here, but why don't you look at tuning your memory? If
bos.adt.samples are loaded, you should be able to use 'vmtune'. All the
tuning tools are located in /usr/samples/kernel. The book "Accelerating AIX,
Performance tuning for programmers and system administrators" talks about
tweaking the memory to get the most out of it. What I would look at first is
the 'minperm' and 'maxperm' values. AIX right out of the box by default has
some 'less then perfect' memory figures. If you tighten these up initially,
it will greatly reduce your paging. Just a thought.
Regards,
Darryl
-----Original Message-----
From: Bill Verzal [mailto:Bill_Verzal@BCBSIL.COM]
Sent: Friday, September 13, 2002 8:54 AM
To: aix-l@Princeton.EDU
Subject: Memory and swap question
OK - I need to convince management of something. I am hoping the scenario
I am presenting to the list will work. Please be my Guinea pigs.
I have a Regatta node that I believe to be memory constrained. How can we
tell ? We ran out of swap space and the system hung. I proposed adding
memory but was told "they got what they asked for, leave it alone."
So I upped swap space from 512MB to 2GB. Currently it is 13.5% used, which
I calculate out to 276MB.
Can I make the statement "If I add 276MB of memory, our swapping should
decrease significantly" (or some similar statement) ???
Thanks, Bill
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Bill Verzal
Technical Consultant
Forbes Technical Consulting
(312) 653-3684
bill_verzal@bcbsil.com
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