alamb commented on PR #9595:
URL:
https://github.com/apache/arrow-datafusion/pull/9595#issuecomment-2007861670
I ran the performance tests again ad I definitely see a significant slowdown
related to select *. If you need help profiling to see where the time is going
let me know
```
alamb@aal-dev:~/arrow-datafusion4$critcmp before after
group after
before
----- -----
------
logical_plan_tpch_all 1.00 16.4±0.16ms ? ?/sec 1.01
16.5±0.12ms ? ?/sec
logical_select_all_from_1000 3.84 98.6±0.35ms ? ?/sec 1.00
25.7±0.10ms ? ?/sec
physical_plan_tpch_all 1.01 129.7±0.52ms ? ?/sec 1.00
128.0±0.41ms ? ?/sec
physical_select_all_from_1000 4.11 722.5±1.07ms ? ?/sec 1.00
175.7±0.40ms ? ?/sec
alamb@aal-dev:~/arrow-datafusion4$
```
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