To fix scalability issue usage of the shared variable was removed. According to specjvm2008::crypto.rsa workload one thread performance drop for less than 1% while score for the 224 threads increased in ~2 times. Numbers for my run on 2 socket server with the Xeon 8480+ looks as: 1 thread runs: score drop from ~646 for original build to ~644 for patched build; 224 threads: score increase from ~22553 for original to ~46633 for patched build.
The micro benchmark RSABench show no difference for the 1 thread run and report average ~2.4% improvement for the 224 threads. ------------- Commit messages: - 8317538: access to shared variable was removed Changes: https://git.openjdk.org/jdk/pull/21573/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21573&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8317538 Stats: 15 lines in 1 file changed: 0 ins; 14 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/21573.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21573/head:pull/21573 PR: https://git.openjdk.org/jdk/pull/21573
