ADSM-L

Re: Memory Tuning For AIX

2015-10-04 17:13:39
Subject: Re: Memory Tuning For AIX
From: Joel Fuhrman [mailto:joelf AT CAC.WASHINGTON DOT EDU]
To: ADSM-L AT VM.MARIST DOT EDU
Chris -  tapas is part of which fileset and in which directory does it
reside?

On Thu, 3 Jan 2002, Chris Gibes wrote:

> There is a better tool. It was introduced in AIX 4.3.2 and it's called
> topas (it's very similiar to "monitor" or "top") Simply enter "topas" at
> the AIX command prompt. As to the problem, if the system is really paging,
> it's most likely your bufpool is set too high. I would try lowering your
> bufpool size. If that helps, then don't increase your bufpool until after
> you get more memory. Topas will allow you to see hot processes, disks,
> adapters and paging all at the same time, which will make it much easier
to
> figure what process is monopolizing your resources.
>
> Good Luck
>
>
> At 07:02 AM 1/3/02 -0500, you wrote:
> >I think the wide range of answers as to what this output means is a good
> >indication that IBM would do well to develop a more concise tool for
> >reviewing resource utilization.  As for my opinion I would start with
> >'vmtune' and then look at 'iostat'.  Good Luck
> >
> >Thanks,
> >Jon Martin
> >
> >-----Original Message-----
> >From: Denis L'Huillier [mailto:dlhuillier AT PERSHING DOT COM]
> >Sent: Wednesday, January 02, 2002 1:34 PM
> >To: ADSM-L AT VM.MARIST DOT EDU
> >Subject: Memory Tuning For AIX
> >
> >
> >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
>
> Chris Gibes <gibes AT berbee DOT com>
> Tivoli Certified Consultant
> IBM Certified System Administrator
> Berbee- Milwaukee Branch
> (262) 521-5616
>
>
> Berbee...putting the E in business
>
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