Appserver 8.1 shows a 10% regression in performance when running appserver in development mode on J2SE 5.0 instead of J2SE 1.4.2_05 on Windows operating systems. On other operating systems, we see a 5% performance boost.

The culprit appears to be that the UseSpinning flag is no longer on in J2SE 5.0 on Windows; if we add this flag manually, then we get the performance back. However, the appserver cannot support different out of the box configurations like that.For development, the appserver uses these options (since developers are more interested in startup): -client -Xmx512m -XX:NewRatio=2.
###@###.### 10/12/04 20:36 GMT