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Posted to reviews@spark.apache.org by "LuciferYang (via GitHub)" <gi...@apache.org> on 2023/09/23 02:44:07 UTC
[GitHub] [spark] LuciferYang commented on a diff in pull request #43065: [SPARK-45287][TESTS] Add Java 21 benchmark result and update Java 17 ones
LuciferYang commented on code in PR #43065:
URL: https://github.com/apache/spark/pull/43065#discussion_r1334908931
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core/benchmarks/ZStandardBenchmark-results.txt:
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@@ -2,26 +2,26 @@
Benchmark ZStandardCompressionCodec
================================================================================================
-OpenJDK 64-Bit Server VM 1.8.0_372-b07 on Linux 5.15.0-1041-azure
+OpenJDK 64-Bit Server VM 17.0.8+7-LTS on Linux 5.15.0-1046-azure
Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz
Benchmark ZStandardCompressionCodec: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
--------------------------------------------------------------------------------------------------------------------------------------
-Compression 10000 times at level 1 without buffer pool 293 327 85 0.0 29283.2 1.0X
-Compression 10000 times at level 2 without buffer pool 322 324 2 0.0 32184.8 0.9X
-Compression 10000 times at level 3 without buffer pool 453 456 2 0.0 45285.1 0.6X
-Compression 10000 times at level 1 with buffer pool 171 173 1 0.1 17065.2 1.7X
-Compression 10000 times at level 2 with buffer pool 208 209 1 0.0 20786.5 1.4X
-Compression 10000 times at level 3 with buffer pool 334 335 2 0.0 33350.3 0.9X
+Compression 10000 times at level 1 without buffer pool 2800 2801 2 0.0 279995.2 1.0X
Review Comment:
From what I remember, the results of this microbenchmark are always unstable.
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