ADSM-L

Re: CPU usage and sizinging

2005-09-28 17:06:30
Subject: Re: CPU usage and sizinging
From: David E Ehresman <deehre01 AT LOUISVILLE DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 28 Sep 2005 11:49:54 -0400
Have you tuned your aix memory settings, e.g. maxperm/minperm?

>>> Ray.Louvier AT HALLIBURTON DOT COM 09/27/05 2:27 PM >>>
No we are not but the expire is starting to take so long it is starting
to overlap. We have 4 GB memory and are using 2 GB of it and starting to
page at about 40% we have a 2 GB paging pool

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Lawrence Clark
Sent: Tuesday, September 27, 2005 1:23 PM
To: ADSM-L AT VM.MARIST DOT EDU 
Subject: Re: CPU usage and sizinging

I assume you are not running db backups concurrently with expires.
expires would be changing the database and the two processes would
be hampering each other, especially since expiration will spawn
reclamations.

peaks of 60 to 70%, while high, do not suggests you are maxed out
there.

have you looked at memory utilization. We had 1gb on our tSM server
and
db is a little less than half yours.


>>> Ray.Louvier AT HALLIBURTON DOT COM 09/27/2005 2:05:35 PM >>>
I also use topas, but our cpu's run at 60 to 70 % at Expire inventory
and DB backup. So even though it shows we have CPU left would 4 cpu's
divide it out and make these processes run in a more acceptable time.
>From 6 or 8 hours for 900000 items to say 2 or 3 hours. Nothing else
is
running for 2 hours when these start

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
Of
Sung Y Lee
Sent: Tuesday, September 27, 2005 12:57 PM
To: ADSM-L AT VM.MARIST DOT EDU 
Subject: Re: CPU usage and sizinging

The one I use here to monitor CPU usage in AIX is command called Topas
http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixbman/prftungd 

/2365c53.htm


Sung Y. Lee

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 09/27/2005
09:21:54 AM:

> I suppose you could answer that question by monitoring CPU
utilization
(
> or paging) during the expire / reclamation cycle.
>
> Try the free demo of something like application manager 6 and
monitor
> it for several days and see if there is a spike during those times.
>
> >>> Ray.Louvier AT HALLIBURTON DOT COM 09/27/2005 9:07:30 AM >>>
> I have a question to the group that I hope I can get some answer or
> pointed to some doc's on. I have to justify buying an AIX 550 over a
> AIX
> 520. My argument is, that our Database backups and expire
inventories
> are running longer than they should on our 1 G two cpu 520 running
5.3
> AIX. The expire inventory runs for at least 5 to 6 hours and usually
> has
> about 700000 items. Our disk for the DB are separate channels raw
disk
> on an I/o chassis. My belief is that those two processes are CPU
> intensive.. Am I correct? Our DB is about 50 GB. We backup about 230
> nodes and about 1.3 TB a night. We are running TSM 5.2.4.
>
>
>
> Office: 281-871-5502  |  Mobile: 713-471-1844
>
>
>
>
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