[jdk16u] RFR: 8258414: OldObjectSample events too expensive

[Jaroslav Bachorik]

8258414: OldObjectSample events too expensive

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Commit messages:
 - 8258414: OldObjectSample events too expensive

Changes: https://git.openjdk.java.net/jdk16u/pull/107/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=107&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258414
  Stats: 142 lines in 9 files changed: 64 ins; 31 del; 47 mod
  Patch: https://git.openjdk.java.net/jdk16u/pull/107.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16u pull/107/head:pull/107

PR: https://git.openjdk.java.net/jdk16u/pull/107