[jdk25u-dev] RFR: 8366082: Improve queue size computation in CPU-time sampler

[Johannes Bechberger]

Backport of code that improves the queue sizing of the CPU time sampler (dynamic vs the previous static approach).

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Commit messages:
 - Backport 002f936ef21943ff1c8c03618091793768e756ac

Changes: https://git.openjdk.org/jdk25u-dev/pull/44/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=44&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8366082
  Stats: 299 lines in 7 files changed: 276 ins; 7 del; 16 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/44.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/44/head:pull/44

PR: https://git.openjdk.org/jdk25u-dev/pull/44