AnonHxy opened a new pull request, #17948: URL: https://github.com/apache/pulsar/pull/17948
Fixes https://github.com/apache/pulsar/issues/17931 ### Motivation The PR https://github.com/apache/pulsar/pull/17049 bring a significant performance regression for publish throughput. The root case is that `HashFunction#hashBytes(byte[])` takes a lot of cpu time. So we need add a cache for `SchemaHash`. The test result for publish throughput(msgs/s) is below： | |master branch| master branch revert PR#17049 | master branch apply this patch| | -- |---|---|---| |1 |837,119.26 |1,504,240.76 | 1570375.90 | | 2 | 870,065.55| 1,504,240.76| 1594203.19 | | 3 | 868,281.75|1,504,240.76 | 1589468.89 | |avg| 858,488.85| 1,528,647.63| 1584682.66| ### Modifications Adding a cache for `SchemaHash`. ### Verifying this change - [x] Make sure that the change passes the CI checks. ### Documentation <!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. --> - [ ] `doc` <!-- Your PR contains doc changes --> - [ ] `doc-required` <!-- Your PR changes impact docs and you will update later --> - [x] `doc-not-needed` <!-- Your PR changes do not impact docs --> - [ ] `doc-complete` <!-- Docs have been already added --> ### Matching PR in forked repository PR in forked repository: <!-- ENTER URL HERE --> <!-- After opening this PR, the build in apache/pulsar will fail and instructions will be provided for opening a PR in the PR author's forked repository. apache/pulsar pull requests should be first tested in your own fork since the apache/pulsar CI based on GitHub Actions has constrained resources and quota. GitHub Actions provides separate quota for pull requests that are executed in a forked repository. The tests will be run in the forked repository until all PR review comments have been handled, the tests pass and the PR is approved by a reviewer. --> -- 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]
