[jdk21u-dev] RFR: 8319314: NMT detail report slow or hangs for large number of mappings

[Aleksey Shipilev]

Clean and easy backport to improve NMT usability.

Additional testing:
 - [x] macos-aarch64-server-fastdebug, `runtime/NMT`

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Commit messages:
 - Backport 9938b3f62babfc35ee682bd979a6bf08ac7cd348

Changes: https://git.openjdk.org/jdk21u-dev/pull/263/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=263&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319314
  Stats: 18 lines in 1 file changed: 8 ins; 5 del; 5 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/263.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/263/head:pull/263

PR: https://git.openjdk.org/jdk21u-dev/pull/263