Re: Memory Tuning For AIX
2002-01-03 09:14:15
We solved this exact problem by reducing BUFPOOLSIZE in dsmserv.opt. It was
set very high, causing TSM to (apparently) pin that much memory for its own
use - then the OS didn't have enough. Symptoms: high paging, rotten TSM
performance, admin sessions took minutes to connect.
Recommend using SELFTUNEBUFPSIZE. (If you already are, then this advice
won't help of course.)
Good luck.
----------------------------
Mr. Lindsay Morris
Mr. Lindsay Morris
CEO
Applied System Design
www.servergraph.com <http://www.servergraph.com>
859-253-8000 ofc
425-988-8478 fax
> > Hello-
> > I am having a memory problem.
> > I am runnning AIX 4.3.2 on a H50. TSM is the only application
> > running on the server. When I run vmstat I get the following...
> >
> > kthr memory page faults cpu
> > ----- ----------- ------------------------ ------------ -----------
> > r b avm fre re pi po fr sr cy in sy cs us sy id wa
> > 0 0 136233 202 0 3 2 99 210 0 52 240 66 17 30 16 37
> > 1 3 136234 342 0 38 11 3727 4204 0 1322 6136 4665 12 11 3 74
> > 2 3 136236 160 0 44 12 3728 5326 0 1324 5844 4644 10 11 2 76
> > 1 3 136237 295 0 17 19 4113 5725 0 1305 7174 5091 13 10 3 74
> > 0 3 136237 629 0 19 9 4240 7442 0 1316 7200 5082 14 13 5 68
> >
> > Does this look normal to anyone? From my limited understanding
> of vmstat
> > it looks like:
> > CPU utilization is maxed out
> > I have blocked processes (the b column)
> > The scan rate (sr) column is very high.
> > The server has 1Gig of memory. I'm really not sure how to tell how much
> is
> > allocated to
> > the OS and how much is allocated to TSM. Does anyone have any ideas or
> > pointers is
> > tuning memory for AIX? Do I need a memory upgrade?
> > I started checking this because my server response is horrible.
> > Thanks.
> > Denis
> >
>
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