RFR: 8309639: GenShen: Regression in LRU cache benchmark

[William Kemper]

On Thu, 17 Aug 2023 19:04:20 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> Should we make this conditional upon is_generational, and revert the non-generational mode to original behavior?

I'm more inclined to test if this feature (i.e., heuristic ignores abbreviated cycles) improves performance on the upstream branch. I will test for a measurable benefit for this feature. For now, I think we should fix this bug. If we can show the performance benefit of this feature, I think we should upstream it. Otherwise, we should just back it out altogether.

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PR Comment: https://git.openjdk.org/shenandoah/pull/307#issuecomment-1682968105