Hello all, I also use Tomcat (v4.0.4), and I have run my webapp with a variety of JVMs in order to find which is best in terms of performance. It could be important to point that my Java code conforms to the 1.3 API specification, no 1.4-exclusive class or method is used.
I found out that the best performing JVM on a single-processor Linux machine is Blackdown-1.3.1 with green threads and the OpenJIT compiler. Other JVMs I tried are: IBM v1.3.0 - 1.3.1, Sun v1.3.1 - 1.4.x It was a surprise for me to find out such a result, infact some benchmark classes I've done in order to measure pure processing power showed the IBM JDK as the best performer: nevertheless, when it comes to running my webapp under Tomcat, Blackdown 1.3.1 with green threads and OpenJIT makes it run _noticeably_ faster. Consequently, I surfed the net in order to find some command-line options to pass to the JVM in order to increase native threading scalability, but I didn't find anything useful. I looked at the NGPT home page, surfed the net and found some interesting benchmarks : http://www.opengroup.org/rtforum/jan2002/slides/linux/abt.pdf . At http://www.ibm.com/developerworks/oss/pthreads/, they say: "This release is fully suitable as a replacement for LinuxThreads by either a single user or group or an entire distribution." Does it mean that if I patch the kernel and install it on my system, my JVM will use it? I guess it's not so easy :-) Bye, Marco Trevisan ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
