-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chuck,
On 12/9/2010 11:09 PM, Caldarale, Charles R wrote: > I'm also very, very interested in the exact cause for the improvement > observed with multiple JVMs using "another servlet container" - which > may have no applicability to Tomcat. Glad to see someone else is skeptical. I wonder what the environment was, too: the JRE version is very sensitive: older versions of the runtime were much slower for even uncontended locks, etc. and of course GC gets better with every release. - -chris > It's worse than that - the compressed OOPs are relative as well, so > it's an add and a shift. However, if you keep the heap size down (so > that direct 32-bit pointers are used), that extra overhead is > eliminated - but now you're constrained by a small heap. I hadn't thought of them being relative, but I guess the OS is obviously doing some virtual memory mapping as well. Heh... running a 32-bit JVM will certainly speed-up memory access, as long as you're willing to live inside a 1.6GiB heap :) - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk0CcvAACgkQ9CaO5/Lv0PBw7wCggidq59l99UqxGuTRao1rLbtI tvgAn2QXNYOHwEOo6tjCsEgeUrwTeYwn =kA2h -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
