LuciferYang commented on code in PR #51099:
URL: https://github.com/apache/spark/pull/51099#discussion_r2134056635
##########
core/benchmarks/PercentileHeapBenchmark-jdk21-results.txt:
##########
@@ -0,0 +1,41 @@
+================================================================================================
+PercentileHeap Operations
+================================================================================================
+
+OpenJDK 64-Bit Server VM 21.0.7+6-LTS on Linux 6.11.0-1015-azure
+AMD EPYC 7763 64-Core Processor
+PercentileHeap Operations - Input Size: 10000: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
+-----------------------------------------------------------------------------------------------------------------------------
+Percentile: 0.5 59 59
0 0.2 5916.3 1.0X
+Percentile: 0.9 59 59
0 0.2 5871.2 1.0X
+Percentile: 0.95 59 59
0 0.2 5866.8 1.0X
+Percentile: 0.99 59 59
1 0.2 5861.6 1.0X
+
+OpenJDK 64-Bit Server VM 21.0.7+6-LTS on Linux 6.11.0-1015-azure
+AMD EPYC 7763 64-Core Processor
+PercentileHeap Operations - Input Size: 50000: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
+-----------------------------------------------------------------------------------------------------------------------------
+Percentile: 0.5 1465 1466
1 0.0 29294.4 1.0X
+Percentile: 0.9 1459 1461
3 0.0 29170.8 1.0X
+Percentile: 0.95 1456 1458
2 0.0 29127.4 1.0X
+Percentile: 0.99 1455 1458
2 0.0 29106.2 1.0X
+
+OpenJDK 64-Bit Server VM 21.0.7+6-LTS on Linux 6.11.0-1015-azure
+AMD EPYC 7763 64-Core Processor
+PercentileHeap Operations - Input Size: 100000: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
+------------------------------------------------------------------------------------------------------------------------------
+Percentile: 0.5 5834 5836
2 0.0 58336.8 1.0X
+Percentile: 0.9 5830 5838
9 0.0 58295.2 1.0X
+Percentile: 0.95 5830 5832
2 0.0 58302.2 1.0X
+Percentile: 0.99 5819 5822
3 0.0 58190.4 1.0X
+
+OpenJDK 64-Bit Server VM 21.0.7+6-LTS on Linux 6.11.0-1015-azure
+AMD EPYC 7763 64-Core Processor
+PercentileHeap Operations - Input Size: 200000: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
+------------------------------------------------------------------------------------------------------------------------------
+Percentile: 0.5 23300 23326
31 0.0 116497.8 1.0X
Review Comment:
After changing the input data size, I found that there is a big performance
gap in `PercentileHeap` when using Java 21 compared to using Java 17.
I've created SPARK-52418 for this issue. Can we merge the current code and
results as a baseline and address this problem later? @dongjoon-hyun
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