BigAdmin Submitted Article: Understanding Concurrent Mark Sweep Garbage Collector Logs. Performance Tuning Garbage Collection in Java. This document is a summary or outline of Sun's document: Tuning Garbage collection with the 1.4.2 Hotspot JVM located here: 1.0 Introduction For many applications garbage collection performance is not significant Default collector should be first choice2.0 Generations Most straightforward GC will just iterate over every object in the heap and determine if any other objects reference it.
This gets really slow as the number of objects in the heap increase GC's therefor make assumptions about how your application runs. Most common assumption is that an object is most likely to die shortly after it was created: called infant mortality This assumes that an object that has been around for a while, will likely stay around for a while. Garbage Collection: ConcMarkSweep vs. RMI.
Abstract Use of the ConcMarkSweep garbage collector for the “tenured” generation is undesirable when RMI (Remote Method Invocation) garbage collection is occurring.
Introduction. Turbo-charging Java HotSpot Virtual Machine, v1.4.x to Improve the Performance and Scalability of Application Servers. Oracle Oracle Oracle Technology Network > Java JavaOne JavaOne Sessions Available.
Garbage Collection - Frequently Asked Questions. This document describes the behavior of the Java( tm) HotSpot( tm) virtual machine.
This behavior is not part of the VM specification, however, and is subject to change in future releases. Moreover the behavior described here is generic behavior and will not apply to the execution of all Java applications. How is the generational collector implemented in HotSpot(tm)? Tuning Garbage Collection with the 5.0 Java[tm] Virtual Machine. Introduction The Java TM 2 Platform Standard Edition (J2SE TM platform) is used for a wide variety of applications from small applets on desktops to web services on large servers.
In the J2SE platform version 1.4.2 there were four garbage collectors from which to choose but without an explicit choice by the user the serial garbage collector was always chosen.