dongjoon-hyun commented on code in PR #54292:
URL: https://github.com/apache/spark/pull/54292#discussion_r2802120053
##########
core/benchmarks/LZFBenchmark-jdk21-results.txt:
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@@ -2,18 +2,18 @@
Benchmark LZFCompressionCodec
================================================================================================
-OpenJDK 64-Bit Server VM 21.0.8+9-LTS on Linux 6.11.0-1018-azure
+OpenJDK 64-Bit Server VM 21.0.10+7-LTS on Linux 6.14.0-1017-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 594 606
11 430.9 2.3 1.0X
-Compression 256000000 int values single-threaded 570 572
1 449.0 2.2 1.0X
+Compression 256000000 int values in parallel 604 611
9 423.7 2.4 1.0X
+Compression 256000000 int values single-threaded 560 561
2 457.5 2.2 1.1X
-OpenJDK 64-Bit Server VM 21.0.8+9-LTS on Linux 6.11.0-1018-azure
+OpenJDK 64-Bit Server VM 21.0.10+7-LTS on Linux 6.14.0-1017-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 2 threads 23 25
1 0.0 22108.7 1.0X
-Compression 1024 array values single-threaded 32 33
0 0.0 31296.0 0.7X
+Compression 1024 array values in 1 threads 47 54
4 0.0 45412.7 1.0X
Review Comment:
Ya, I agree with you. We may had better simply choose a constant value, `2`,
always.
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