June 2012
Intermediate to advanced
638 pages
20h 46m
English
book
WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
by Jan Bajerski, Davide Barillari, Libor Cada, Susan Hanson, Guo Liang Huang, Rispna Jain, Shishir Narain, Jennifer Ricciuti, Christian Steege
Content preview from WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
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Chapter 10. Performance, scalability, and high availability 287
10.1.3 JVM garbage policy: Metronome
A new Metronome garbage collection policy is included with the IBM SDK for Java 7 for
evaluation purposes. It is a real-time incremental garbage collection policy and is supported
through WebSphere Real Time.
The Metronome Garbage Collector consists of two types of threads: An alarm thread and a
number of collection threads. The single alarm thread wakes at regular intervals to check
whether insufficient free space is available and no garbage collection is taking place. If these
conditions are met, the alarm thread triggers the collection threads to start garbage
collection. A number of collection threads mark live objects so that unmarked objects ...
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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.