Compute jvm heap size to host web application

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+2 Q:

Compute jvm heap size to host web application

Hello, I want to host a web application on a private JVM they offer 32, 64, 128, 256 MB plans.

My web application uses Spring. And I store some objects for every logged in user session.

My question is: How can I profile my web app to see how much heap size it needs so I can choose a plan?, How can I simulate hundreds of users logged in at the same time?

I'm developing the application using Netbeans 6.7 Java 1.6 Tomcat 6.0.18

Thank you.

+1 A:

I'd recommend using a tool like JMeter to do your load testing. You can use jvisualvm to see basic heap usage or grab a heap dump to see exact details.

Kaleb Pederson 2010-04-06 20:48:08

+2 A:

For profiling you can use VisualVM, YourKit, etc.
For simulating load you can use Apache JMeter

matt b 2010-04-06 20:48:26

But if I want to simulate load and see how does the memory increases with every new user do I need to use JMeter in conjunction with VisualVM or YourKit?

Enrique 2010-04-06 21:16:12

@Enrique - there's no reason to think that it wouldn't work.

Stephen C 2010-04-07 00:48:20

Jmeter can be used to create/simulate load and VisualVM or Yourkit can be used to profile the app under load, so yes. You'd want to use them together.

matt b 2010-04-07 01:38:31

ansaurus

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Compute jvm heap size to host web application

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