https://issues.apache.org/bugzilla/show_bug.cgi?id=43790
--- Comment #8 from Ian Hartney <ian.hart...@gmail.com> 2012-03-20 14:57:07 UTC --- There does appear to be a concurrency issue with the synchronized block approach when using Java 5. However in Java 6 the synchronized block approach appears faster than the LinkedBlockingQueue approach. I have a little test harness that used 250 threads to concurrently access a queue in the same manner as the TagPoolHandler. Each loop does a get of an object, then a reuse call on the object 10000 times. It runs the same test using the synchronized block approach, then another using the LinkedBlockingQueue (LBQ) approach. On Java 5 the test takes around 11000 ms to complete for the synchronized block approach, the LBQ approach takes 700 ms. Conversely on Java 6 the synchronized block approach is much improved, taking around 450 ms whereas the LBQ approach takes 750 ms. So when using Java 5 it does appear that the LBQ approach has some significant performance advantages to the synchronized block approach. The tested versions of java were 1.5.0_22 and 1.6.0_23 -- Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
