зеркало из
https://github.com/iharh/notes.git
synced 2025-11-04 07:36:08 +02:00
41 строка
1.1 KiB
Plaintext
41 строка
1.1 KiB
Plaintext
https://github.com/AdoptOpenJDK/jitwatch/wiki
|
|
https://jakubstransky.com/2018/02/03/jvm-code-friendly-to-jit-optimisation/
|
|
|
|
To generate the hotspot.log file used by JITWatch run your program with the following JVM switches.
|
|
|
|
-XX:+TraceClassLoading
|
|
|
|
-XX:-TieredCompilation // to turn off the tiered compil-n
|
|
|
|
-XX:+PrintInlining
|
|
-XX:+PrintCompilation
|
|
-XX:+PrintAssembly
|
|
-XX:+LogCompilation // combines PrintCompilation and PrintInlining in one horrible xml (LogCompilation - for CLI, JITWatch - for GUI)
|
|
|
|
-XX:+UnlockDiagnosticVMOptions
|
|
-XX:+PrintInlining
|
|
-XX:+PrintAssembly
|
|
|
|
-Xbatch // ???
|
|
2> /dev/null
|
|
|
|
out:
|
|
ms batch-id flags
|
|
flags
|
|
! - ex-hanling
|
|
% - never-ending loop
|
|
|
|
The hotspot.log file is generated in the program execution directory.
|
|
|
|
https://gist.github.com/chrisvest/2932907
|
|
https://wikis.oracle.com/display/HotSpotInternals/PrintAssembly
|
|
|
|
Performance Techniques:
|
|
https://wiki.openjdk.java.net/display/HotSpot/PerformanceTechniques
|
|
|
|
Options:
|
|
http://www.oracle.com/technetwork/articles/java/vmoptions-jsp-140102.html
|
|
|
|
qa
|
|
https://stackoverflow.com/questions/1503479/how-to-see-jit-compiled-code-in-jvm
|