Exclude the test results for the XP box from the equation, and exclude
1.6 because it is really "done" yet, and his test results for the iBook
with the same CPU and (I assume OS X version) show the following:
Time of execution for StringBuffer test:
In the Mac with VM 1.3
20 ms
Same execution now with VM 1.4.2_12:
17 ms
Using VM 1.5.0_07:
26 ms
In 1.3, we get 20ms, then in 1.4 it improves to 17ms, then in 1.5 the
execution time goes up to 26ms, which means that processing time using
1.5 has degraded by slightly over 50% with respect to 1.4. If you go
back to his e-mail with all the test results you show a consisitent
performance improvement as the JVM versions go up with the Pentium based
machine. The article, if I recall it correctly, was intended to show
some of the optimization improvements on Sun releases as we go from
1.4->1.5->1.6.
It would seem to me that this indicates those performance improvements
have not been implemented in 1.5, which is an official release now.
