gortiz opened a new pull request, #11112: URL: https://github.com/apache/pinot/pull/11112
This PR applies some easy win optimizations trying to reduce the Object[] allocation in V2. Results are not as good as expected, given that they mostly attack incorrect ArrayList initializations while the actual improvement will be trying to reduce how many ArrayList are created. The latter is something I would like to achieve, but the changes required are not as simple as the ones included here. Allocations pre change:  Allocations post change:  Notice that: * The improvement is mainly in the gray areas * Flamegraphs show a relative performance * The difference in outside TLAB allocation * Charts were generated after running queries for 5 mins, but I've only made one execution per case, so I'm not sure about repeatability -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
