Optimal VMTUNE Guidelines for a TSM Server
2002-09-16 18:01:44
I am trying to figure out what these are. The defaults are not good on a
large server.
The suggestion is figure out how much memory does dsmserv need and then work
from there.
So lets take the example of a 2G server with a buffer pool of 256MB and an
overall memory requirement of 400MB. That would make you think there is
about 1.6GB left around. Problem is the default filesystem maxperm is 80%
of the 2GB or about 1.6GB. This would mean nothing left for the rest of the
processes, thus lots of paging. I am thinking a buffer of about 128MB
should be in there. So, in this case, maybe set maxperm to 65%.
The real question is what other vmtune knobs should be considered in a TSM
server. The IO prefetch, large or small? Is there a book on how to do
this?
ETC
ETC.
Paul D. Seay, Jr.
Technical Specialist
Naptheon Inc.
757-688-8180
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