Public bug reported: Binary package hint: tomcat6
Forking an issue from #541520 The current default of a 128MB heap does not make sense. This was chosen when Java 1.4 had a default maximum heap size of 64MB. In Java 1.5 and later, the JVM will automatically size the heap based on available memory. So the current default setting actually unnecessarily sets a limit on the memory available to tomcat, when not setting anything at all would actually allow the modern JVMs to do a better job. References: http://java.sun.com/javase/technologies/hotspot/gc/gc_tuning_6.html#par_gc.ergonomics.default_size http://java.sun.com/javase/6/docs/technotes/guides/vm/gc-ergonomics.html http://java.sun.com/docs/hotspot/gc5.0/ergo5.html *** initial heap size: Larger of 1/64th of the machine's physical memory on the machine or some reasonable minimum. Before J2SE 5.0, the default initial heap size was a reasonable minimum, which varies by platform. You can override this default using the -Xms command-line option. maximum heap size: Smaller of 1/4th of the physical memory or 1GB. Before J2SE 5.0, the default maximum heap size was 64MB. You can override this default using the -Xmx command-line option. *** ** Affects: tomcat6 (Ubuntu) Importance: Undecided Status: New -- Improved Java Memory/Performance Defaults https://bugs.launchpad.net/bugs/568823 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
