Github user wangyum commented on a diff in the pull request:
https://github.com/apache/spark/pull/22484#discussion_r219104743
--- Diff: sql/core/benchmarks/AggregateBenchmark-results.txt ---
@@ -0,0 +1,154 @@
+================================================================================================
+aggregate without grouping
+================================================================================================
+
+Java HotSpot(TM) 64-Bit Server VM 1.8.0_151-b12 on Mac OS X 10.12.6
+Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
+
+agg w/o group: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
+------------------------------------------------------------------------------------------------
+agg w/o group wholestage off 39650 / 46049 52.9
18.9 1.0X
+agg w/o group wholestage on 1224 / 1413 1713.5
0.6 32.4X
+
+
+================================================================================================
+stat functions
+================================================================================================
+
--- End diff --
@davies Do you know how to generate there benchmark:
https://github.com/apache/spark/blob/3c3eebc8734e36e61f4627e2c517fbbe342b3b42/sql/core/src/test/scala/org/apache/spark/sql/execution/benchmark/AggregateBenchmark.scala#L70-L78
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