Blog Control to Major Tom.

List of JVM Options

At the urging of a few folks that have found this useful, I have posted a list I have been maintaining of all the JVM Options I could find. The list includes descriptions and versions of the JVM the options are valid for. Hopefully this will be useful to other Java Platform developers out there. Apparently it has been useful inside Sun to others besides myself. Anyways, you can find the list at http://blogs.sun.com/roller/page/watt/JVMOptionsList. Enjoy.

(2004-09-17 17:47:15.0) Comments [7] // Permalink

Comments:

Whoops, ran into some limitions of the software. For now I have hosted the list on another server, until I get the problem resolved.

Posted by Watt on September 17, 2004 at 06:26 PM PDT #

I skimmed over the list, and actually most of flags are debug flags (example -XX:+UseNewFeature1), that's totally a debug flag for developers. And in general we don't like giving people flags outside of the ones that are available by typing java -help.

Posted by Azeem Jiva on September 18, 2004 at 08:14 AM PDT #

That's a little harsh don't you think? The list produced by "java -help" is pretty small. It doesn't even display any of the well known XX options either. Many of which are necessary to tune the JVM under certain conditions. Not to mention they have been written about elsewhere, as referenced.

Posted by Watt on September 18, 2004 at 10:18 AM PDT #

I think many customers already 'know' about the vast majority of these flags. During PS/support engagements, we invariably have customers try out certain flags to see if their problem is solved, or to get better debugging information. java.sun.com itself is littered with many of these flags, although without very good documentation about them. This list will just help everyone to know which flags exist in which versions...something that has been sorely needed for a while now. -M

Posted by Moazam Raja on September 18, 2004 at 08:25 PM PDT #

Watt coudl you post the details as one full blog entry..the url you gave is now timing out..

Posted by Fred Grott on September 20, 2004 at 12:54 PM PDT #

I just moved the location of the file onto my blog, now that the blogs.sun.com admin changed the settings to allow it. This should be more stable than where it was hosted before.

Posted by Watt on September 21, 2004 at 12:50 PM PDT #

This is like the rosetta stone of jvm options! Looks like it took a lot of effort. Hopefully the JVMs autotuning (starting in 5.0) will make most of these obsolete one day

Posted by Calvin Austin on October 22, 2004 at 10:01 AM PDT #

17 Sep 2004