I have been successfully collecting the accounting cards for a long
time. I have them from the very first IPL of this z890. I am not doing
chargeback. I would not do charge back from the accounting cards, I
would do it from the Monitor data stream because the per user
utilization and the rest of the system utilization is in a single place
for analysis.

Needless to say, I would love to buy all the great PRODUCTS that people
sell, but I have no budget. Anyway, that would be going forward in time.
My current need is to process some data from BACK IN TIME. I have to
work with data from FY2007 (Oct 1 2006 to Sep 30 2007) and I don't have
the detailed Monitor data to process with ESALPS or even with PerfTK
that I do have.

I have accounting cards and rexx and pipelines and wanted to see if
there were any use of NEW tools in LINUX for processing this data.
Apparently no one has thought of using new tools (new to VMers at least)
for processing old data.

I will go back to using rexx or if I am up late at night sometime I
might resurrect the FORTRAN G compiler I got from the Waterloo Mods tape
and do it all in my first programming language.

/Tom kern

-----------Original Message-----------------
From:         Rob van der Heij <[EMAIL PROTECTED]>

To set up something on CMS to collecting the account records is very
easy. Either set up 2 users to manage that, or a simple pipeline to do
it. The hardest part is to ensure your disk does not fill up.

My experience is that when you have accounting data and charge-back
based on that, customers will often challenge the reported usage and
related charges. When they normally use 1 hour of CPU per day and
suddenly one day 10 hours, they often claim it must be bad accounting
since they don't remember doing more work. I have been at an
installation where on average 40% of the CPU capacity was used by
looping servers and other operation problems.

When you have detailed monitor data available, you can still tell when
those 10 hours were consumed. And when you have process data available
as well, as you suggest, it is even possible to point at the process
consuming those CPU hours. This does require correct CPU usage inside
Linux, and sufficient high capture ratio to be relevant. Unfortunately
the new Linux instrumentation runs short on both aspects.

Rob

PS Needless to say that ESALPS keeps performance history for such
analysis and collects CPU usage with typically > 99.5% capture ratio,
so good enough for accounting purposes as well.
--
Rob van der Heij
Velocity Software GmbH
http://velocitysoftware.com/

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