mardi avril 05, 2005

More diet experiments
Following-up on my NetBeans Diet post :

1/ When removing every module and using the plain NetBeans Platform, the new numbers are 1117 classes loaded (1422 Kbytes) in 0.57 seconds. But of course in this case I have no IDE features really (but still useful for Rich Client developement - see Elan's posts here and here).

2/ Using the -Xshare:off option to turn off JDK 5.0 system class sharing does have an impact as jstat -class only measures the classes effectively loaded and not the "shared classes" image. I've run my tests with no option (other than -client) which is equivalent to -Xshare:auto. Starting the NetBeans platform with -Xshare:off does more than double the number of classes loaded.

3/ I wouldn't draw conclusions on the loading time as my VM and IDEs are available via NFS.


Here's a summary of what I've measured: