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List:       openjdk-hotspot-runtime-dev
Subject:    Re: RFR: 8322043: HeapDumper should use parallel dump by default [v6]
From:       Alex Menkov <amenkov () openjdk ! org>
Date:       2024-04-30 18:54:09
Message-ID: oKw_lwvggGR1lO90lIqvwzDVsV0Qqp0heQgm-TGdFjU=.a27a162d-b28f-4b22-9a3d-3d185666ddac () github ! com
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> The fix makes VM heap dumping parallel by default.
> `jcmd GC.heap_dump` and `jmap -dump` had parallel dumping by default, the fix \
> affects `HotSpotDiagnosticMXBean.dumpHeap()`, `-XX:+HeapDumpBeforeFullGC`, \
> `-XX:+HeapDumpAfterFullGC` and `-XX:+HeapDumpOnOutOfMemoryError`. 
> Testing:
> - manually tested different heap dump scenarios with `-Xlog:heapdump`;
> - tier1,tier2,hs-tier5-svc;
> - all reg.tests that use heap dump.

Alex Menkov has updated the pull request incrementally with one additional commit \
since the last revision:

  removed space-only change in diagnosticCommand.cpp

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18748/files
  - new: https://git.openjdk.org/jdk/pull/18748/files/641bedc5..eb38705d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18748&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18748&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18748.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18748/head:pull/18748

PR: https://git.openjdk.org/jdk/pull/18748


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