RE: Interactive CPW

["Andy Nolen-Parkhouse" <aparkhouse@xxxxxxxxx>]

Rick,

The best reference for your question would be the Performance and
Capabilities Reference for your particular release.  Check the web page
below for a PDF file.

http://www-1.ibm.com/servers/eserver/iseries/perfmgmt/resource.htm

I truly don't think that there is anything out there which measures CPW,
other than the CPW benchmark itself.  Your best bet might be to take the
CPW rating and figure that as a percentage of processor utilization.  If
you had a machine with a processor CPW of 1000 and an interactive CPW of
200, then your machine would reach its interactive limit when the
interactive jobs and their associated tasks reached 20% of processor.

The remaining task would be to take performance data and segregate it
according to whether or not it is flagged as interactive.  I don't
whether or not anyone has written such a utility.  If all of your
interactive work occurs in the same subsystem, it would not be too
difficult, although there are complications as outlined in the manual
above.  Some non-interactive asynchronous tasks get charged back to
interactive jobs, so your measurements will not be exact.  For V5R1,
check on page 26 for the "managing interactive capacity" section.

Yes, both of the access methods you list are interactive.

Regards,
Andy Nolen-Parkhouse

> On Behalf Of Rick Nardone
> Subject: Interactive CPW
>
> Confused on what makes up Interactive CPW.  Took a look at the
archives;
> there are some contradictory posts, some are dated and may not reflect
> current IBM policy.  Could someone point me in the right direction?
While
> I
> would like an IBM doc that lays this out, my main questions are:
>
> - Are CA/400 Express TCP/IP connections for 5250 work Interactive?
> - Is Webfacing Interactive?
>
> Also, does anyone know of a product(freeware preferably) that will
allow
> us
> to determine what our peak CPW(both Processor and Interactive)
utilization
> is?
>
> Thanks..