[jdk21u-dev] RFR: 8322149: ConcurrentHashMap smarter presizing for copy constructor and putAll

Wed Jun 11 07:56:36 UTC 2025

On Thu, 29 May 2025 14:31:38 GMT, Francesco Andreuzzi <duke at openjdk.org> wrote:

> Clean backport of JDK-8322149. Clear performance gains (30%) for `ConcurrentHashMap#putAll` and copy constructor.

Label `jdk21u-fix-no` was added to [JDK-8322149](https://bugs.openjdk.org/browse/JDK-8322149), closing.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1841#issuecomment-2961614967