dlg99 opened a new issue, #24490: URL: https://github.com/apache/pulsar/issues/24490
### Search before reporting - [x] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar. ### Read release policy - [x] I understand that [unsupported versions](https://pulsar.apache.org/contribute/release-policy/#supported-versions) don't get bug fixes. I will attempt to reproduce the issue on a supported version of Pulsar client and Pulsar broker. ### User environment Pulsar 4.0.x ### Issue Description After running series of perf tests to compare 3.0.x and 4.0.x we noticed ~15% e2e (from the time message produced to the time message consumed) avg latency increase in the tests that use shared subscription. The regression disappeared after we set ``` subscriptionKeySharedUseClassicPersistentImplementation=true subscriptionSharedUseClassicPersistentImplementation=true ``` This makes recent-ish refactoring (PIP-379 ) of shared/keyshared subscription the primary suspect. @lhotari FYI ### Error messages ```text ``` ### Reproducing the issue Test names give rough description of what's being tested: - Pulsar 1m 10 topics 3 partitions 100b shared subs - Pulsar 400k 10 topics 3 partitions 1k shared subs @sandeep-mst can help with repro if needed ### Additional information _No response_ ### Are you willing to submit a PR? - [ ] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
