items tagged with jvm

We are working since 3 days on tuning a big application: 

• Client server enterprise grade application,
• Run on 2 JVM  with 4Gb (Tomcat/Application server) of RAM each!
• Run on 2 Double core AMD 64 bits server,
• Linux 64bits,
• Has a lot of parallel users and > 10000 are registered
• Use a product meta model which separate definition from implementation data.
• Java server faces, java, ajax

• The same code as above,
• In windows XP, 
• IBM T40,  Intel Pentium M 1.6 GHz,  DDR266/PC2100
• 1 JVM with 500Mb in Tomcat,
• 1 GB of physical Ram,
• 1 Desktop user who may run also Lotus Notes, Microsoft Office at the same time...

The Apache  software fundation has put a new project in it's incubator line: Harmony

A free open source Java virtual machine and classes librairies!!!

Right now it is only a thread, and a FAQ...an interesting discussion has start on Slashdot.org  

Purpose of this project is to create and use an open source, compatible implementation of J2SE
5, the latest version of the Java 2 Standard Edition specification.

"The Apache Software Foundation provides support for the Apache community of open-source software projects. The Apache projects are characterized by a collaborative, consensus based development process, an open and pragmatic software license, and a desire to create high quality software that leads the way in its field. We consider ourselves not simply a group of projects sharing a server, but rather a community of developers and users."

Update: Sun executives have endorsed the project, and the company might even participate. found at www.informationweek.com