JDK-8320877 : Shenandoah: Remove ShenandoahUnloadClassesFrequency support
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 17,21,22
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2023-11-28
  • Updated: 2024-01-16
  • Resolved: 2023-11-29
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JDK 21 JDK 22
21.0.3Fixed 22 b26Fixed
Related Reports
Relates :  
JDK-8228720 - Shenandoah: Implementation of concurrent class unloading
Relates :  
JDK-8322150 - [GenShen] TestPeriodicGC fails with "Generational mode: Should have periodic young GC in logs"
Description
ShenandoahUnloadClassesFrequency was added long time ago when Shenandoah did not support concurrent class unloading. We kept it in to simplify backports. At this point, most releases support concurrent class unloading, and there is no reason to keep the flag in. The default is "1" since JDK-8228720.
Comments
[jdk21u-fix-request] Approval Request from Aleksey Shipilëv Clean backport to improve Shenandoah maintainability and keep codebases in sync. Fix is contained in Shenandoah, eliminates unnecessary tunable. Risk is low.
09-01-2024
A pull request was submitted for review. URL: https://git.openjdk.org/jdk17u-dev/pull/2115 Date: 2024-01-09 11:49:53 +0000
09-01-2024
A pull request was submitted for review. URL: https://git.openjdk.org/jdk21u-dev/pull/147 Date: 2024-01-09 11:45:05 +0000
09-01-2024
Changeset: b65ccff3 Author: Aleksey Shipilev <shade@openjdk.org> Date: 2023-11-29 17:25:40 +0000 URL: https://git.openjdk.org/jdk/commit/b65ccff357e2e294b027f693ceb3d25410236a6b
29-11-2023
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/16847 Date: 2023-11-28 12:05:16 +0000
28-11-2023