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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22 IBM iDoctor for iSeries Job Watcher: Advanced Performance Tool
2.1 Simplified view of running and waiting
One of the main purposes of the iDoctor for iSeries Job Watcher tool is to, in near real time,
quantify the amount of
wall clock time a thread or task spends running and the amount of
time it spends waiting. This first section introduces the concepts of running and waiting in a
rather simplistic environment. The real world complexities of iSeries processor sharing, LPAR
considerations, and so forth, will come later in our wait bucket descriptions.
All units of work in a system at any instant in time are in one of three states:
1. On a CPU ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.