This looks promising.
So if I understand all this correctly, we've so far found two things that each contribute to the surprisingly slow startup of JSPs in v3:
1. The classpath for javac (after JSP compilation) contains lots (250) of unnecessary JARs.
2. The Security Manager is turned on by default in v3
When it comes to a [i]production[/i] installation, my guess is that the slow startup of JSPs is less of a problem, since there the JSPs are used over and over again, and the initial delay for compilation is ony an annoyance once.
[Message sent by forum member 'tmpsa']
http://forums.java.net/jive/thread.jspa?messageID=482154