RFR: 8373695: G1: Using a value near integer max for ActiveProcessorCount causes fatal crash

Tue Dec 16 17:41:21 UTC 2025

On Mon, 15 Dec 2025 19:46:14 GMT, Jonas Norlinder <jnorlinder at openjdk.org> wrote:

> G1ConcRefinementThreads default value depends on ParallelGCThreads which in turn may depend on ActiveProcessorCount. These have different ranges that are valid. Patch will ensure argument setup code never try to assign a value larger than what G1ConcRefinementThreads expects.

Could an alternative be to limit ParallelGCThreads?

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PR Review: https://git.openjdk.org/jdk/pull/28831#pullrequestreview-3584239774