Well it appears that this revision is not a one to ignore if you care about performance (and you have the guts of an early adapter:-) The "small" revision update is not small at all and contains 3 important performance improvements:
1. The long anticipated G1 garbage collector
2. Escape analysis
3. Compressed OOPs
I will elaborate on these features in my next posts.... for now you may look at http://java.sun.com/javase/6/webnotes/6u14.html
What does this say about JDK1.7 ? Down porting features before 1.7 is released...... makes you wonder is 1.7 going to be Sun's Vista?
6 comments:
Hi,
You forgot to mention that in order to use the G1 in production you have to pay for it :-(
Eyal
Well this is quite shocking.....
:-)
They either want to control the number of early adopters who use this GC algorithm or Oracle state of mind is already in there.
I will not recommend using this in production anyway in the near future.So lets hope that it will become free to use soon.....
Two thoughts:
1.) Escape Analysis has been (to my knowledge) there for a long time (unless they introduced more advanced algorithm...?)
2.) The G1 GC does _Not_ require you to pay for it, however, they would like you to pay for it so they can give you support with this (still) experimental feature. Read http://java.sun.com/javase/6/webnotes/6u14.html for a clarification.
Yep,
they updated the release notes following the debate and the reaction
of the community.
see http://www.infoq.com/news/2009/06/g1-free-or
At least they react to community in a timely fashion :-)
Post a Comment