jmx-dev RFR: 8269851: OperatingSystemMXBean getProcessCpuLoad reports incorrect process cpu usage in containers [v8]

[xpbob]

> …ocess cpu usage in containers

xpbob has updated the pull request incrementally with one additional commit since the last revision:

  Add  comments

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4702/files
  - new: https://git.openjdk.java.net/jdk/pull/4702/files/fdd17d50..0f43d5dc

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4702&range=07
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4702&range=06-07

  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4702.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4702/head:pull/4702

PR: https://git.openjdk.java.net/jdk/pull/4702