RFR: 8366082: Improve queue size computation in CPU-time sampler [v6]

[Jaroslav Bachorik]

On Fri, 5 Sep 2025 08:00:50 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

>> Improve the sample queue size computation for the CPU-time sampler by increasing the size dynamically when needed, but keeping the default size small.
>
> Johannes Bechberger has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix build on non Linux

I have a few more minor questions/nits

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PR Review: https://git.openjdk.org/jdk/pull/26926#pullrequestreview-3188765342