RFR: 8336707: Contention of ForkJoinPool grows when stealing works [v27]
Doug Lea
dl at openjdk.org
Thu Nov 14 00:18:55 UTC 2024
> This addresses tendencies in previous update to increase fencing, scanning, and signalling that can increase contention, and slow down performance especially on ARM platforms. It also uses more ARM-friendly constructions to reduce overhead (leading to several changes that all of the same form),
Doug Lea has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 48 additional commits since the last revision:
- Merge branch 'openjdk:master' into JDK-8336707
- Rename variable
- Merge branch 'openjdk:master' into JDK-8336707
- Improve readbility; tweak runState checks
- Address review comments
- Merge remote-tracking branch 'refs/remotes/origin/JDK-8336707' into JDK-8336707
- Merge branch 'openjdk:master' into JDK-8336707
- Merge branch 'openjdk:master' into JDK-8336707
- Reconcile internal docs; renamings
- Minor improvements
- ... and 38 more: https://git.openjdk.org/jdk/compare/3ac4c723...cb179dda
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/21507/files
- new: https://git.openjdk.org/jdk/pull/21507/files/a5f038f9..cb179dda
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=21507&range=26
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=21507&range=25-26
Stats: 11364 lines in 225 files changed: 6033 ins; 3516 del; 1815 mod
Patch: https://git.openjdk.org/jdk/pull/21507.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/21507/head:pull/21507
PR: https://git.openjdk.org/jdk/pull/21507
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