dongjoon-hyun commented on code in PR #52600:
URL: https://github.com/apache/spark/pull/52600#discussion_r2427763578
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core/benchmarks/LZFBenchmark-jdk21-results.txt:
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@@ -6,14 +6,14 @@ OpenJDK 64-Bit Server VM 21.0.8+9-LTS on Linux
6.11.0-1018-azure
AMD EPYC 7763 64-Core Processor
Compress small objects: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
--------------------------------------------------------------------------------------------------------------------------------
-Compression 256000000 int values in parallel 592 604
12 432.7 2.3 1.0X
-Compression 256000000 int values single-threaded 558 560
2 458.7 2.2 1.1X
+Compression 256000000 int values in parallel 594 606
11 430.9 2.3 1.0X
+Compression 256000000 int values single-threaded 570 572
1 449.0 2.2 1.0X
OpenJDK 64-Bit Server VM 21.0.8+9-LTS on Linux 6.11.0-1018-azure
AMD EPYC 7763 64-Core Processor
Compress large objects: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
-----------------------------------------------------------------------------------------------------------------------------
-Compression 1024 array values in 1 threads 44 50
3 0.0 43112.9 1.0X
-Compression 1024 array values single-threaded 32 33
0 0.0 31315.1 1.4X
+Compression 1024 array values in 2 threads 23 25
1 0.0 22108.7 1.0X
Review Comment:
The number of thread seems to be changed by GitHub Action side.
https://github.com/apache/spark/blob/7d028c69311cf7605418d510cba7005e34d75de7/core/src/test/scala/org/apache/spark/io/LZFBenchmark.scala#L69-L77
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