RFR: 8355003: Implement Ahead-of-Time Method Profiling [v4]
Igor Veresov
iveresov at openjdk.org
Mon Apr 28 09:15:28 UTC 2025
> Improve warm-up time by making profile data from a previous run of an application instantly available, when the HotSpot Java Virtual Machine starts. Specifically, enhance the [AOT cache](https://openjdk.org/jeps/483) to store method execution profiles from training runs, reducing profiling delays in subsequent production runs.
>
> More details in the JEP: https://bugs.openjdk.org/browse/JDK-8325147
Igor Veresov has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 32 commits:
- Merge branch 'master' into pp2
- Fix class filtering
- Remove the workaround of setting AOTRecordTraining during assembly
- Address some of the review comments
- Merge branch 'master' into pp
- Add AOTCompileEagerly flag to control compilation after clinit
- Port 8355334: [leyden] Missing type profile info in archived training data
- Port 8355296: [leyden] Some methods are stuck at level=0 with -XX:-TieredCompilation
- Use ENABLE_IF macro
- Missing part of the last commit
- ... and 22 more: https://git.openjdk.org/jdk/compare/2447b981...7fb7ae62
-------------
Changes: https://git.openjdk.org/jdk/pull/24886/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24886&range=03
Stats: 3185 lines in 57 files changed: 2960 ins; 103 del; 122 mod
Patch: https://git.openjdk.org/jdk/pull/24886.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/24886/head:pull/24886
PR: https://git.openjdk.org/jdk/pull/24886
More information about the hotspot-compiler-dev
mailing list