Re: Performance problem

["Clare Holtham" <Clare.Holtham@xxxxxxxxxxxxxx>]

Hi Chris,
Due to holidays I've only just seen your message. Obviously to really solve
your problem you need to shell out for more interactive welly from IBM,
however there IS some damage limitation you can do. I have had some success
with the following technique:
1) Reduce the activity level in QINTER to 7 or less (aiming to restrict
interactive work)
2) Check that the timeslice of the QINTER class is something like 300
(depending on the size of your box) - not the shipped default 2000 - if
2000, change it.
3) Ensure that your other work (batch, query, etc) does not run at normal
priority (i.e. 50 for batch) - raise these priorities to 35, say.
This will prevent the situation where, as soon as CFINT kicks in, all the
jobs get their priorities reduced to 89 and the system feels like you're
trying to walk through treacle! OK, some users will have to wait when their
interactive jobs go 'ineligible', but this is the price you pay for avoiding
total system sludge mode.
You could also get interactive users to 'schedule' their work - i.e. orders
in the morning, accounts in the afternoon etc - like we used to do years
ago!
The priority thing is because IBM have so called 'bands' of priority, and
when an active job gets downgraded it goes to the next 'band' down.
If you want any more info, or help, please e-mail me offline and I'll see
what I can do,
cheers,
Clare

Clare Holtham
IBM Certified AS/400 Systems Administrator
SmallBlue Services
E-Mail: Clare.Holtham@btinternet.com
Mobile: +44 (0)7960 665958

----- Original Message -----
From: "Chris Wenk" <christophe.wenk@kuehne-nagel.com>
To: <MIDRANGE-L@midrange.com>
Sent: Monday, April 30, 2001 7:48 AM
Subject: Performance problem


> Hi all
>
> I've got a performance problem on my AS/400 720.
> Most likely I've got to many users doing a signon
> and therefore the task "CFINT01" is more or less
> constantly over 80%.
> (Have V4R4M0, and loaded the latest cumulative ptfs)
> I know that an upgrade of the interactive card would help.
> However, to avoid the problem as an interim solution I would like to
> restrict the access on QINTER. I tried to change with
> CHGJOBQE the maximum active jobs to 60. This didn't help.
> After 60 entries other people can still logon.
>
> Any ideas/examples ?
>
> Thanks a lot
> Chris
>
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