andygrove commented on PR #4254:
URL:
https://github.com/apache/datafusion-comet/pull/4254#issuecomment-4392934450
## before
tbd
## after
```
Running benchmark: var_samp
Running case: Spark
Stopped after 30 iterations, 2045 ms
Running case: Comet (Scan)
Stopped after 40 iterations, 2035 ms
Running case: Comet (Scan + Exec)
Stopped after 90 iterations, 2012 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
var_samp: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 66 68
2 15.9 62.8 1.0X
Comet (Scan) 49 51
2 21.5 46.5 1.4X
Comet (Scan + Exec) 21 22
1 49.9 20.0 3.1X
Running benchmark: var_pop
Running case: Spark
Stopped after 30 iterations, 2010 ms
Running case: Comet (Scan)
Stopped after 41 iterations, 2033 ms
Running case: Comet (Scan + Exec)
Stopped after 93 iterations, 2005 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
var_pop: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 65 67
2 16.0 62.5 1.0X
Comet (Scan) 48 50
1 21.8 45.9 1.4X
Comet (Scan + Exec) 21 22
1 50.6 19.8 3.2X
Running benchmark: stddev_samp
Running case: Spark
Stopped after 30 iterations, 2034 ms
Running case: Comet (Scan)
Stopped after 40 iterations, 2035 ms
Running case: Comet (Scan + Exec)
Stopped after 93 iterations, 2017 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
stddev_samp: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 65 68
1 16.0 62.3 1.0X
Comet (Scan) 49 51
1 21.2 47.1 1.3X
Comet (Scan + Exec) 21 22
1 50.8 19.7 3.2X
Running benchmark: stddev_pop
Running case: Spark
Stopped after 31 iterations, 2056 ms
Running case: Comet (Scan)
Stopped after 40 iterations, 2003 ms
Running case: Comet (Scan + Exec)
Stopped after 93 iterations, 2003 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
stddev_pop: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 64 66
1 16.4 60.9 1.0X
Comet (Scan) 48 50
1 21.6 46.2 1.3X
Comet (Scan + Exec) 21 22
1 50.6 19.8 3.1X
Running benchmark: covar_samp
Running case: Spark
Stopped after 27 iterations, 2022 ms
Running case: Comet (Scan)
Stopped after 34 iterations, 2016 ms
Running case: Comet (Scan + Exec)
Stopped after 75 iterations, 2004 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
covar_samp: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 73 75
2 14.4 69.6 1.0X
Comet (Scan) 56 59
2 18.6 53.7 1.3X
Comet (Scan + Exec) 26 27
1 40.9 24.5 2.8X
Running benchmark: covar_pop
Running case: Spark
Stopped after 27 iterations, 2018 ms
Running case: Comet (Scan)
Stopped after 35 iterations, 2027 ms
Running case: Comet (Scan + Exec)
Stopped after 76 iterations, 2021 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
covar_pop: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 73 75
2 14.4 69.5 1.0X
Comet (Scan) 56 58
2 18.7 53.5 1.3X
Comet (Scan + Exec) 25 27
2 41.1 24.3 2.9X
Running benchmark: corr
Running case: Spark
Stopped after 25 iterations, 2067 ms
Running case: Comet (Scan)
Stopped after 31 iterations, 2053 ms
Running case: Comet (Scan + Exec)
Stopped after 61 iterations, 2000 ms
OpenJDK 64-Bit Server VM 17.0.17+10 on Mac OS X 26.3.1
Apple M3 Ultra
corr: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 80 83
5 13.1 76.1 1.0X
Comet (Scan) 64 66
2 16.4 61.0 1.2X
Comet (Scan + Exec) 32 33
1 32.6 30.7 2.5X
```
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