JDK-8326586 : Improve Speed of System.map
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 22,23
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2024-02-23
  • Updated: 2025-03-13
  • Resolved: 2024-03-02
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JDK 21 JDK 23
21.0.8Fixed 23 b13Fixed
Related Reports
Causes :  
JDK-8327169 - serviceability/dcmd/vm/SystemMapTest.java and SystemDumpMapTest.java may fail after JDK-8326586
Relates :  
JDK-8318636 - Add jcmd to print annotated process memory map
Description
System.map performs a NMT-region lookup by address; since these lookups are usually in order, we can optimize the lookup.
Comments
[jdk21u-fix-request] Approval Request from Andreas Steiner Follow up change for backport https://bugs.openjdk.org/browse/JDK-8318636
11-03-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk21u-dev/pull/1467 Date: 2025-03-11 08:27:02 +0000
11-03-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/17984 Date: 2024-02-23 15:31:27 +0000
11-03-2025
Changeset: 37e01efb Author: Thomas Stuefe <stuefe@openjdk.org> Date: 2024-03-02 08:13:07 +0000 URL: https://git.openjdk.org/jdk/commit/37e01efb7831e29068f834fe0629595cb721b90d
02-03-2024