hotspot/src/share/tools/LogCompilation/README
author kvn
Fri, 04 Aug 2017 21:41:41 -0700
changeset 46763 1b0ff6953b5a
parent 20010 c66a7254680c
permissions -rw-r--r--
8185843: fix broken HotSpotInternals wiki links Reviewed-by: dholmes, vlivanov Contributed-by: muthusamy.chinnathambi@oracle.com

This is a very rough tool for parsing -XX:+LogCompilation output.
It's main purpose is to recreate output similar to
-XX:+PrintCompilation -XX:+PrintInlining output from a debug JVM.  It
requires a 1.5 JDK to build and simply typing make should build it.

It produces a jar file, logc.jar, that can be run on the
HotSpot log (by default, hotspot_pid{pid}.log) from LogCompilation output like this:

  java -jar logc.jar hotspot_pid1234.log

This will produce something like the normal PrintCompilation output.
Adding the -i option with also report inlining like PrintInlining.

More information about the LogCompilation output can be found at

https://wiki.openjdk.java.net/display/HotSpot/LogCompilation+overview
https://wiki.openjdk.java.net/display/HotSpot/PrintCompilation
https://wiki.openjdk.java.net/display/HotSpot/LogCompilation+tool