yifeih commented on a change in pull request #23914: [SPARK-27009][TEST] Add
Standard Deviation to benchmark results
URL: https://github.com/apache/spark/pull/23914#discussion_r261392867
##########
File path: core/src/test/scala/org/apache/spark/benchmark/Benchmark.scala
##########
@@ -111,16 +111,17 @@ private[spark] class Benchmark(
// The results are going to be processor specific so it is useful to
include that.
out.println(Benchmark.getJVMOSInfo())
out.println(Benchmark.getProcessorName())
- out.printf("%-40s %16s %12s %13s %10s\n", name + ":", "Best/Avg Time(ms)",
"Rate(M/s)",
- "Per Row(ns)", "Relative")
- out.println("-" * 96)
+ out.printf("%-40s %16s %12s %13s %10s %13s\n", name + ":", "Best/Avg
Time(ms)", "Rate(M/s)",
+ "Per Row(ns)", "Relative", "Stdev (ms)")
Review comment:
ok it looks like this now:
```
[info] agg w/o group: Best Time(ms) Avg
Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
[info]
------------------------------------------------------------------------------------------------------------------------
[info] agg w/o group wholestage off 43309
43591 283 48.4 20.7 1.0X
[info] agg w/o group wholestage on 1032
1111 111 2032.4 0.5 42.0X
```
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