On Jan 24, 2008, at 2:11 AM, Ron Hawkins wrote:
Ed,
Seeing as captured SRB time is attributed directly to the address
the owning
address space, why wouldn't you include SRB time in your billing.
In fact
CPU Time for billing nowadays usually includes IO interrupt time,
RCT Time
(swapping) and Hyperspace access.
I believe IBM has stayed with the original requirement for accounting
records in z/OS and it's ancestors, that is if there is any
ambiguity about
the ownership of CPU time then ignore it, otherwise record it.
That's why we
have uncaptured.
Ron
-----------------SNIP----------------------
Because it is ever changing. If you (example) charge you users for
say copying a tape and say in rel 3.8 the SRB time is 20 secs and say
in rel 3.8 the time is increased to 25 sec but in say 1.3 it goes
down to 10 sec and you upgrade to 1.8 it changes *again* in 2.1 to
25 secs . (and so on) (assuming the same amount of records) their
billing is changeable and the user comes to you and asks why am I
getting charged say 2.50 back in 3.8 and now I am getting hit with
3.50 (these are JUST examples don't get hung up on specifics I am
just pointing out variables that can happen) its difficult (to me) to
explain that at one time it didn't cost as much to do the same amount
of work as it does today (don't even try and talk about inflation
etc) he can see the timing of SRB has changed.
And how can the user budget for such changes as tomorrow the same job
might increase to say $5.00 When he is getting no more work done that
it costs say 6 months ago. I know I am not using real numbers but as
a typical user would say "why?". The money is as I said a simple
example not a real life one as I don't have a report in front of me.
Of course if you are recalling a dataset off a tape and your friendly
dasd back up package as more gets on a tape it has to spin further
into a tape one day that say 6 months from now that time can also be
a complicating issue and the amount of time you have to do to
investigate this does mount up and then how do you charge that time
of research? I have seen users challenge practically every charge and
it gets time consuming for the research. I have latterly seen a weeks
worth of research done over $1000. (us). And, it really gets ugly at
the end of the financial year the number of hours gets really high.
Division can't budget if their work doesn't change. Now granted you
can always charge more but then the users get upset, they do want
consistency for budget purposes.
Ed
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