On Tue, 25 May 2004 12:15:26 +0000 (UTC), ak <ak@pentagon-systems.com>
wrote:

>Hi Everyone,
>
>Can anyone assist me with a system issue that I think I am getting. The
>company that supplied and support my AIX system have said that my system
>is experiencing normal usage, however I'm not an AIX expert and I am
>sure that the system is not couping.
>
>The only things the server is doing is minor internal email not internet
>accessible, and a database that the users access via a telenet type
>client. I have a maximum limit of 201 users on at any one time and the
>system seems to be running extremely slow.
>
>Here is a iostat of a busy period, this is common for 2-4 hours While I
>have shown some bad examples, the average CPU idle time over these
>periods is less than 20%.
Hi,
Not sure if this is relevant or not in your case,
but in the past with some database software, I have
seen huge system degradation due to
the "VMM Sequential Write Behind" algorithm.
I normally turn off the sequential write behind
and turn on the random write behind and things
run a lot smoother. vmtune can be used for
setting these options.
The command that works well for me is:

vmtune -c 0 -W 32 -j 0 -z 0 -J 32

Hope this helps.

Kevin English

Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com




----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =---