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Windows 7: how much size can i set java heap size to with 4gb RAM?

09 Feb 2014   #1

windows 7 Ultimate 32-bit
how much size can i set java heap size to with 4gb RAM?

i'm using windows 7 32 bit with 4GB RAM. how much size can i set java heap size to so that other apps are not affected. The eclipse IDE is running slow. i'm not able to set eclipse heap size above 700mb with java heap size set to 2048mb.

My System SpecsSystem Spec
09 Feb 2014   #2

Microsoft Community Contributor Award Recipient


According to this IBM article, size your Java heap so that your application runs with a minimum heap usage of 40%, and a maximum heap usage of 70%. Although this is an older article I would guess that the parameters would still apply today.

IBM SDK for Java
My System SpecsSystem Spec
09 Feb 2014   #3
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1

A 32 bit OS can only utilize up to 3.2GB of ram, and some of that is dedicated to the system and video. I see posts about editing the eclipse.ini for heap size, but I believe there is no set amount that will definitely work.

eclipse.ini - Eclipsepedia

java - JVM Heapsize on 32 bit OS - Stack Overflow

A Guy
My System SpecsSystem Spec


 how much size can i set java heap size to with 4gb RAM?

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