Latest news

NEW: APRIL NEWSLETTER

• We list all the latest Java performance related news and articles
  • "G1 becomes official; a new jcmd command-line diagnostic tool; and finally we can get notified of garbage collections!"
• All the latest Java performance tips extracted in concise form
  • "Statelessness scales forever. Scalability is all about loose coupling. Identify the single points of failure."

MARCH NEWSLETTER

• We list all the latest Java performance related news and articles
  • "Then we got ergonomic garbage collection algorithms which could vary the maximum heap size dynamically according to it's internal heuristics, and we were told that we shouldn't set ms to mx because this defeated the ergonomics"
• All the latest Java performance tips extracted in concise form
  • "An update scheduled to run in the UI thread can happen at any time, not under your control, so you need to ensure that the update references the correct data, and that changes reschedule updates to the UI." and "For inter-process communication on the same machine, you can use shared memory via memory-mapped files in Java and this will be faster than TCP loopback."

FEBRUARY NEWSLETTER

• We list all the latest Java performance related news and articles
  • "The huge proliferation of language interest happening just now is the IT community's response to the fact that none of the current mainstream languages is ideal"
• All the latest Java performance tips extracted in concise form
  • "When -XX:+PrintReferenceGC output shows a high Reference reclamation time, enable -XX:+ParallelRefProcEnabled" and "The enemies of latencies are: garbage collection pause (the biggest by far); inter-thread communication; thread context scheduling; synchronization and locks; I/O; algorithmic inefficiencies"

Previous newsletters

All our previous newsletters can be viewed from here

How to use this site

This site has four main information resources:

• The uncategorized tips page lists many other web pages with Java performance tuning related information. Each web page has its performance tuning tips extracted and listed immediately after the URL is listed. These tips are being categorized, and the tips page links to those categories currently available. If the performance area you are interested in is not yet categorized, send us an email from this page telling us the categorization you'd like to see. In any of the tips pages, use your browser's "find" or "search" option to identify particular tips you are interested in on the page, and follow up by reading the referenced web page if necessary or desired.
• The resources page lists Java performance tuning resources including books, tools, reports, other performance tuning sites of interest, and Java performance tuning discussion groups.
• The news pages are monthly newsletters listing any new Java performance tuning related information, together with Kirk Pepperdine's discussion group roundup and Javva The Hutt.
• The tool reports pages are detailed introductory reports on various Java performance related tools, for both free and commercial tools.

This site has been designed to download almost as fast as possible. (Some stylistic markup and required server-side processing has been used in preference to absolute speed contraints.) The web tree contains very few graphics and almost no complex typesetting markup except for very simple tables, and the main pages can be accessed directly from the menu.

This line is only to help search engines: Java performance tuning Java tuning Java optimization Java optimize Java optimizing Java fast Java faster Java speedup Java performance Java High-Performance