[jdk21u] Withdrawn: 8319650: Improve heap dump performance with class metadata caching
Aleksey Shipilev
shade at openjdk.org
Wed Dec 13 10:49:50 UTC 2023
On Tue, 21 Nov 2023 12:28:53 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:
> Unclean backport to improve heap dump performance. The uncleanliness comes from [JDK-8306441](https://bugs.openjdk.org/browse/JDK-8306441) that does not exist in JDK 21, and which I don't think we want to backport at the moment. I had to add a few more `ResourceMark`-s near `HeapDumpWriter` to manage the cache allocations.
>
> Additional testing:
> - [x] MacOS AArch64 server release, heap dump performance improved
> - [x] Linux x86_64 server fastdebug, serviceability/ (contains heap dump tests)
> - [x] Linux x86_64 server fastdebug, runtime/ErrorHandling (contains heap dump on failure tests)
> - [x] Linux x86_64 server fastdebug, gc/epsilon (contains heap dump on failure tests)
> - [x] Linux x86_64 server fastdebug, sun/tools/jhsdb (contains heap dump tests)
This pull request has been closed without being integrated.
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PR: https://git.openjdk.org/jdk21u/pull/388
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