[jdk17u-dev] RFR: 8331405: Shenandoah: Optimize ShenandoahLock with TTAS

[Aleksey Shipilev]

On Thu, 12 Sep 2024 08:19:00 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> I will approve this one here. But 17u is a stable release and now 3 years in maintenance. So please step back from backporting improvements to 17, except there is a really good reason for it.

Context: This patch series is fixing the issues seen that we have seen as problems in real services running Shenandoah with lots of Java threads. Alas, until services are able to migrate to JDK 21 en masse -- they only start doing this -- we unfortunately have a good reason to backport these fixes to 17u. We certainly should stop at 17u, and not backport fixes to 11u and 8u.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2845#issuecomment-2345715899