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Posted to github@arrow.apache.org by "uchenily (via GitHub)" <gi...@apache.org> on 2025/03/19 06:23:18 UTC

Re: [I] [C++][Compute][Acero] Poor aggregate performance when there is a large number of batches on the build side [arrow]

uchenily commented on issue #45847:
URL: https://github.com/apache/arrow/issues/45847#issuecomment-2735457805

   I used the following command to generate a flamegraph, which showed that the majority of the time was spent on methods related to `SwissTable`.
   
   ```shell
   perf record -F 99 -g -- ./test_swissjoin 512 64
   perf script > out.perf
   ./stackcollapse-perf.pl < ../out.perf | ./flamegraph.pl > flamegraph.svg
   ```
   
   ![Image](https://github.com/user-attachments/assets/872c237c-d702-47fd-a124-619f34862c86)


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