Home/ Questions/Q 8846455
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-14T11:59:23+00:00

When writing microbenchmarks, one can observe a large difference in runtime depending on whether

  • 0

When writing microbenchmarks, one can observe a large difference in runtime depending on whether a method has been compiled or not. Is there a way to tell from within a program whether a particular method has been compiled? Alternatively, is there a way to request it, or to know how to warm it up adequately without any extra information about e.g. flags passed to the JVM? Obviously this will not necessarily be perfect (e.g. there may be some condition present that causes the JVM to fall back to interpreted code), but it would certainly be an improvement.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    For Sun/Oracle JVM you can use the -XX:CompileThreshold=1000 setting.

    This – as the official documentation states – defines:

    Number of method invocations/branches before compiling

    Then, just use the number to “warm up” the JVM.

    You can also use the -XX:-PrintCompilation together with -XX:CompileThreshold in order to be notified (in the console) when a method is compiled.

    • 0