Please find a patch to improve JMX Repository.query performance Using ObjectName.apply() allows significantly decrease memory usage and the number of GC cycles: Before:
$ java test 1000000 1000000 Test PASSED in 8943169791 ns. GC: G1 Young Generation getCollectionCount()=177 getCollectionTime()=118 After: $ java test 1000000 1000000 Test PASSED in 4808213917 ns. GC: G1 Young Generation getCollectionCount()=88 getCollectionTime()=53 Private ObjectName.matchDomains() method is also updated to minimize unnecessary memory allocation. All javax/management jtreg tests passed successfully. ------------- Commit messages: - 8299234: JMX Repository.query performance Changes: https://git.openjdk.org/jdk/pull/11758/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11758&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8299234 Stats: 129 lines in 3 files changed: 2 ins; 115 del; 12 mod Patch: https://git.openjdk.org/jdk/pull/11758.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11758/head:pull/11758 PR: https://git.openjdk.org/jdk/pull/11758
