This patch remove access to the shared variable to fix scalability issue in the multithread environment. According to testing by the specjvm2008::crypto.rsa the one thread performance reduced for less than 1% while the score for the multithread run increased in ~2x. For the 2 socket system with Xeon 8480+ numbers looks as: • 1 thread: 643.15 for original version vs 642.54 for patched one; • 224 threads: 22446.19 for original vs 46147.41 for patched. The RSABench microbenchmark reports no score changes for the 1 thread (average for all testcases) and 2.4% improvement for the 224 threads.
------------- Commit messages: - 8317538: Potential bottleneck in Provider::getService: specjvm2008::crypto.rsa have scalability issue for high vCPU numbers Changes: https://git.openjdk.org/jdk/pull/21719/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21719&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/21719.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21719/head:pull/21719 PR: https://git.openjdk.org/jdk/pull/21719
