alamb commented on issue #18909: URL: https://github.com/apache/datafusion/issues/18909#issuecomment-3572903651
### Variance study I also ran the benchmark for DataFusion 51 5 times in a row to spot check the variance between runs. I ran the same benchmark with the same script on the same machine type like this: ```shell # Test variance by running the benchmark for DataFusion 51 5 times in a row rm -f result.csv && bash benchmark.sh && ./save-result.sh 51-run1-c6a.4xlarge rm -f result.csv && bash benchmark.sh && ./save-result.sh 51-run2-c6a.4xlarge rm -f result.csv && bash benchmark.sh && ./save-result.sh 51-run3-c6a.4xlarge rm -f result.csv && bash benchmark.sh && ./save-result.sh 51-run4-c6a.4xlarge rm -f result.csv && bash benchmark.sh && ./save-result.sh 51-run5-c6a.4xlarge ``` My results varied by 7% between runs: <img width="1537" height="1318" alt="Image" src="https://github.com/user-attachments/assets/453d4078-ff24-4bf5-9ce5-a346a0abe4f0"; /> -- 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]
