OmitStackTraceInFastThrow

经常遇到由于这个参数而导致异常堆栈消失的问题，之前看过一篇blog大概有个映像，这里自己记录一下具体的内容。

 

可以参见这篇文章里的测试情况

 

 

Hotspot caused exceptions to lose their stack traces in production – and the fix

 

http://jawspeak.com/2010/05/26/hotspot-caused-exceptions-to-lose-their-stack-traces-in-production-and-the-fix/

 

 

可以看sun官方针对这个的说明

The compiler in the server VM now provides correct stack backtraces for all "cold" built-in exceptions. For performance purposes, when such an exception is thrown a few times, the method may be recompiled. After recompilation, the compiler may choose a faster tactic using preallocated exceptions that do not provide a stack trace. To disable completely the use of preallocated exceptions, use this new flag: -XX:-OmitStackTraceInFastThrow.

 

 

http://java.sun.com/j2se/1.5.0/relnotes.html#hotspot