Buck, You're dead on.
-- however --
I find that in almost every case I work, the standard is "acceptable
response times and the batch work gets done 'on time'" What's acceptable
is generally the IT leaders phone not ringing with complaints, and batch
times are the save finished before the on line day starts.
Trying to get folks to set an actual measurement and to track against it is
much harder than you would ordinarily think. The second you start tracking
things like that, someone in HR gets the bright idea that it should be
written into performance reviews, even if the folks that get measured by it
may not have the ability to affect it much.
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Buck
Calabro
Sent: Friday, April 22, 2016 8:42 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Re: system tuning question
On 4/22/2016 8:17 AM, Hoteltravelfundotcom wrote:
The system seems a bit slow in response time.
I have very strong opinions regarding tuning. I believe that all tuning has
two prerequisites:
1) A goal expressed as numerical quantities vs a specific time frame.
For example: Between 10 and 11 AM 90% of interactive jobs will have
subsecond response time.
2) A measurement which can be used to judge where the system is.
After the prerequisites are met, keep records of
a) what got changed
b) the new measurement
This way you will be able to undo any adverse adjustments, as well as start
to pick out patterns of how your system handles various workloads.
--
--buck
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