RFR: 8359135: New test TestCPUTimeSampleThrottling fails intermittently [v2]

[Johannes Bechberger]

> I increased the tolerated rate deviation to make the test less flaky on systems like PowerPC. The deviation comes from the thread not being in the Java and native states on some platforms compared to others.

Johannes Bechberger has updated the pull request incrementally with two additional commits since the last revision:

 - Remove debug code
 - Make upper-bound narrower

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25745/files
  - new: https://git.openjdk.org/jdk/pull/25745/files/7f9fda63..57a3f447

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25745&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25745&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25745.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25745/head:pull/25745

PR: https://git.openjdk.org/jdk/pull/25745