Win a copy of Re-engineering Legacy Software this week in the Refactoring forum
or Docker in Action in the Cloud/Virtualization forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

InfoQ article on Java Hotspot performance

 
Ilja Preuss
author
Sheriff
Posts: 14112
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I found this article to be quite interesting and wanted to share it with you: http://www.infoq.com/news/2008/05/hotspot_performance
 
Ulf Dittmer
Rancher
Pie
Posts: 42967
73
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Interesting indeed. I've heard it said elsewhere that Java 6 is quite a bit faster than Java 5; this seems to be one of the areas where a lot of progress has been made.
 
Joe Ess
Bartender
Pie
Posts: 9258
10
Linux Mac OS X Windows
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator


That's crazy talk!
I wish there were a mode you could run the VM in where it would give you feedback on your code. And do it in the manner of Nick Burns, Your Company's Computer Guy
[ June 23, 2008: Message edited by: Joe Ess ]
 
Peter Johnson
author
Bartender
Posts: 5852
7
Android Eclipse IDE Ubuntu
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
There was a session at JavaOne this year presented by Sun and Intel engineers where they outlined many of the performance improvements made in the recent versions of JVM 6, with more on the way. Interesting stuff.
 
Pat Farrell
Rancher
Posts: 4678
7
Linux Mac OS X VI Editor
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
There is a rule about performance that has been true at least for 40 years: Over time, equivalent ways of doing something merge to have identical performance.

Loop unrolling has been critical for performance for at least 15 years, Its great to see the JVMs doing it automatically and without any effort.

I think the next step is for languages to make use of quad and octo core processors simpler. Threads and Concurancy are necessary, but not sufficient. Its still way to hard to make code work in parallel.
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic