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Posted to github@arrow.apache.org by "yahoNanJing (via GitHub)" <gi...@apache.org> on 2023/04/06 03:04:20 UTC

[GitHub] [arrow-datafusion] yahoNanJing commented on pull request #5866: Improve avg/sum Aggregator performance

yahoNanJing commented on PR #5866:
URL: https://github.com/apache/arrow-datafusion/pull/5866#issuecomment-1498425875

   @Dandandan, how did you generate the flame graph? At my side, there're many unknowns. Could you teach me how to avoid them.
   ![perf-0](https://user-images.githubusercontent.com/90197956/230261813-ccb5b7a3-173e-44c1-b89a-cc82503a436b.svg)
   
   `
   cargo run --release --bin tpch -- benchmark datafusion --iterations 10 --path ./data-parquet --format parquet --partitions 1 --query 17
   `
   
   `sudo perf record -F 99 -g -p 917304`
   
   `sudo perf script | ./stackcollapse-perf.pl | ./flamegraph.pl > perf.svg`
   


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