RFR: 8266431: Dual-Pivot Quicksort improvements (Radix sort)

[Vladimir Yaroslavskiy]

On Mon, 22 Sep 2025 08:29:43 GMT, Tagir F. Valeev <tvaleev at openjdk.org> wrote:

> It would be nice to have a high-level chart showing how the actual sorting algorithm is selected based on parallel/sequential, input size and whatever else. For an outsider, it's hard to grasp the whole picture. Is radix sort used for parallel sorting only? Sorry if such a chart already exists and I missed it.
> 
> If improvements of parallel sorting and sequential sorting are at least partially independent, I think it may make sense to deliver them in separate PRs. This would really simplify the review process.

I added the chart to the first post.

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PR Comment: https://git.openjdk.org/jdk/pull/27411#issuecomment-3340712291