Java Memory explained (SUN JVM)

views:

1384

answers:

+4 Q:

Java Memory explained (SUN JVM)

I tried to find a interpretation of the memory segments of the sun java vm, which would also understandable by an administrator. It should explain what heap / non-heap memory is and the significance of the different memory pools.

If it would somehow relate to the jconsole view, it would be a bonus.

Is there somewhere a website with such an explanation?

+1 A:

A fairly recent one: http://www.ibm.com/developerworks/java/library/j-nativememory-linux/

cadrian 2009-05-13 14:26:36

+3 A:

This article from Sun on Tuning Garbage Collection with the 5.0 Java Virtual Machine should have pretty good definitions and explanations of everything you are looking for; I don't believe a ton has changed on this subject between 5.0 and 6.0

There is also this whitepaper on Memory Management in the Java HotSpot Virtual Machine.

More Sun documentation, technical articles, and whitepapers.

matt b 2009-05-13 14:28:14

I especially like the whitepaper, but as I said above, nothing suitable for a non-programmer.

Mauli 2009-05-15 13:07:35

+8 A:

Here's a list of resources I had noted down. Some of these explain how the heap/garbage collection works and some have details on how to configure everything.

IBM

Sun

Other

A_M 2009-05-13 15:30:15

+1 for good collections

grayger 2009-05-13 16:20:48

I like the list, but there is not one explanation which would be suitable for a non-programmer.

Mauli 2009-05-15 13:04:55

I don't know what it is you are after then. A really high level, non-technical overview? This stuff is very technical in nature, but you don't have to be a programmer to understand it (although it helps). I've added a JavaWorld article which gives some pictures of how the heap is broken down. I'm sure you'd find more stuff like this if you Google for some of the terms used in this article, e.g. Eden Space, New Generation, Old Generation, Survivor Space, Tenured, etc.

A_M 2009-05-15 15:12:19

I find that Sun's Memory Management Whitepaper offers a good overview.

The final section offers useful links to delve deeper into areas of particular interest.

Leigh 2009-05-13 15:35:09

Also, please see these JavaOne sessions for JVM GC. (including video playback)

Wonil 2010-03-05 19:14:55

ansaurus

tags:

views:

answers:

Java Memory explained (SUN JVM)

related questions