March 2005
Intermediate to advanced
298 pages
9h 21m
English
book
IBM iDoctor iSeries Job Watcher: Advanced Performance Tool
by Jim Cook, Sandi Chromey, Tom Edgerton, Debbie Hatt
Content preview from IBM iDoctor iSeries Job Watcher: Advanced Performance Tool
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Chapter 2. Overview of job waits and iDoctor for iSeries Job Watcher 23
How much time a unit of work spends in state 1 depends on the program design and how
much work it is requested to perform.
How much time a unit of work spends in state 2, ready to run but waiting for a processor to
use, is a function of the amount of CPU competition it experiences while getting its work done.
How much time a unit of work spends in state 3 depends on many factors. At this point, we
need to differentiate between two types of waits:
Type A: Waiting for a work request to arrive (also known as
idle)
Type B: Waits that occur while performing a work request (als ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.