W dniu 2012-02-10 21:28, Dan Gillis pisze:
I have a meeting with a customer next week to talk about z/OS batch job
scheduling. They claim to have about 20 scheduling employees. In my past
experience, that seems about 4x too high. So I thought I'd ask the group
the following question:
How many job schedulers do you have, and how many MIPS is the environment?
It doesn't depend on number of MIPS. It depends on:
- number of jobs
- number of environments (application instances, z/OS images)
- environment complexity
- change activity (new releases)
- BUT NOT MIPS.
Real life examples:
a) "modern company". Number of MIPS grew up approx 40 times, number of
environments grew up 25%. Approx 400 000 jobs monthly, quite complex
dependencies. Two folks on the beginning, now ...also two folks.
b) "old company". No job scheduler! Few hundreds MIPS, environment
functionally stabilized (very few, very small changes in the
application). Schedule table consist of few pages, it's printed by
administrator, jobs are submitted by operators. The operators are mostly
responsible for many other things (printing, ftp transmissions,
backups), so real FTE cost is ZERO.
c) "huge government organisation". They started with homegrown, poor
tools for scheduling and 20 person staff responsible only for batch. Now
they have commercial job scheduler ...and the staff grew up.
--
Radoslaw Skorupka
Lodz, Poland
--
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