alamb commented on issue #17721:
URL: https://github.com/apache/datafusion/issues/17721#issuecomment-3503829497

   My manual results are consistent with my local timings -- 47 takes around 
9.8 seconds for Q23 and 50 takes around 8.5 seconds. 
   
   
   
   # Flushing caches:
   sync
   echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
   # run in loop 5 times:
   for i in `seq 1 5` ; do ~/datafusion-50/target/release/datafusion-cli -f 
create.sql q23.sql  | grep Elapsed ; done
   
   ```
   Elapsed 0.131 seconds.
   Elapsed 106.409 seconds.
   Elapsed 0.041 seconds.
   Elapsed 8.568 seconds.
   Elapsed 0.041 seconds.
   Elapsed 8.407 seconds.
   Elapsed 0.041 seconds.
   Elapsed 8.697 seconds.
   Elapsed 0.041 seconds.
   Elapsed 8.546 seconds.
   ```
   
   
   Now with datafusion 47
   
   ```shell
   # Flushing caches:
   sync
   echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
   # run in loop 5 times:
   for i in `seq 1 5` ; do ~/datafusion-47/target/release/datafusion-cli -f 
create.sql q23.sql  | grep Elapsed ; done
   ```
   
   Elapsed 0.103 seconds.
   Elapsed 111.752 seconds.
   Elapsed 0.039 seconds.
   Elapsed 9.922 seconds.
   Elapsed 0.040 seconds.
   Elapsed 9.869 seconds.
   Elapsed 0.040 seconds.
   Elapsed 9.804 seconds.
   Elapsed 0.040 seconds.
   Elapsed 9.858 seconds.
   
   
   I am going to try and rebuild the binaries a little differently and see if 
that makes a difference


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