RFR: 8372999: Parallel: Old generation min size constraint broken [v4]

Wed Dec 3 14:10:33 UTC 2025

> Adding a missed min-gen-size-checking before shrinking old-gen.
> 
> `TEST=serviceability/tmtools/jstat/GcCapacityTest.java JTREG="JAVA_OPTIONS=-XX:+UseParallelGC -XX:InitialRAMPercentage=0"` fails before and passes after the fix.
> 
> Test: tier1

Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:

  review

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28629/files
  - new: https://git.openjdk.org/jdk/pull/28629/files/61f27a47..3af0c97b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28629&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28629&range=02-03

  Stats: 10 lines in 1 file changed: 7 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/28629.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28629/head:pull/28629

PR: https://git.openjdk.org/jdk/pull/28629