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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/11/02 02:24:31 UTC
[GitHub] [spark] LuciferYang commented on a diff in pull request #38465: [SPARK-40985][BUILD] Upgrade RoaringBitmap to 0.9.35
LuciferYang commented on code in PR #38465:
URL: https://github.com/apache/spark/pull/38465#discussion_r1011088808
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core/benchmarks/MapStatusesConvertBenchmark-jdk11-results.txt:
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@@ -2,12 +2,12 @@
MapStatuses Convert Benchmark
================================================================================================
-OpenJDK 64-Bit Server VM 11.0.16+8-LTS on Linux 5.15.0-1019-azure
+OpenJDK 64-Bit Server VM 11.0.16.1+1 on Linux 5.15.0-1022-azure
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
MapStatuses Convert: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
-Num Maps: 50000 Fetch partitions:500 1269 1276 8 0.0 1268666001.0 1.0X
-Num Maps: 50000 Fetch partitions:1000 2672 2695 39 0.0 2671542753.0 0.5X
-Num Maps: 50000 Fetch partitions:1500 4034 4069 50 0.0 4033696987.0 0.3X
+Num Maps: 50000 Fetch partitions:500 1227 1262 47 0.0 1226744907.0 1.0X
Review Comment:
`Stdev` refers to the standard deviation estimated based on the sample. The standard deviation reflects the dispersion of the value relative to the mean.
From `Per Row(ns)`, although the cpu frequency of the tester is slower than the base, the performance has not changed significantly
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