viirya commented on code in PR #36225:
URL: https://github.com/apache/spark/pull/36225#discussion_r851653163
##########
core/benchmarks/KryoBenchmark-jdk17-results.txt:
##########
@@ -2,27 +2,27 @@
Benchmark Kryo Unsafe vs safe Serialization
================================================================================================
-OpenJDK 64-Bit Server VM 17.0.1+12-LTS on Linux 5.11.0-1022-azure
+OpenJDK 64-Bit Server VM 17.0.2+8-LTS on Linux 5.13.0-1021-azure
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
Benchmark Kryo Unsafe vs safe Serialization: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
---------------------------------------------------------------------------------------------------------------------------
-basicTypes: Int with unsafe:true 271 277
9 3.7 271.3 1.0X
-basicTypes: Long with unsafe:true 271 273
2 3.7 271.1 1.0X
-basicTypes: Float with unsafe:true 264 266
1 3.8 264.5 1.0X
-basicTypes: Double with unsafe:true 269 272
5 3.7 268.6 1.0X
-Array: Int with unsafe:true 3 3
0 365.9 2.7 99.2X
-Array: Long with unsafe:true 5 5
0 214.8 4.7 58.3X
-Array: Float with unsafe:true 3 3
0 375.7 2.7 101.9X
-Array: Double with unsafe:true 5 5
0 210.6 4.7 57.1X
-Map of string->Double with unsafe:true 37 37
1 27.4 36.5 7.4X
-basicTypes: Int with unsafe:false 286 287
1 3.5 285.7 0.9X
-basicTypes: Long with unsafe:false 301 315
17 3.3 300.8 0.9X
-basicTypes: Float with unsafe:false 279 294
17 3.6 278.6 1.0X
-basicTypes: Double with unsafe:false 284 285
1 3.5 283.7 1.0X
-Array: Int with unsafe:false 19 19
0 53.6 18.6 14.5X
-Array: Long with unsafe:false 29 29
0 34.7 28.8 9.4X
-Array: Float with unsafe:false 7 8
0 133.5 7.5 36.2X
-Array: Double with unsafe:false 13 13
1 77.2 13.0 20.9X
-Map of string->Double with unsafe:false 38 38
0 26.4 37.9 7.2X
+basicTypes: Int with unsafe:true 264 271
15 3.8 264.5 1.0X
+basicTypes: Long with unsafe:true 300 303
2 3.3 299.9 0.9X
+basicTypes: Float with unsafe:true 288 290
1 3.5 288.0 0.9X
+basicTypes: Double with unsafe:true 293 300
4 3.4 292.6 0.9X
+Array: Int with unsafe:true 3 3
0 336.3 3.0 88.9X
+Array: Long with unsafe:true 5 5
0 205.6 4.9 54.4X
+Array: Float with unsafe:true 3 3
0 324.1 3.1 85.7X
+Array: Double with unsafe:true 5 5
0 207.2 4.8 54.8X
Review Comment:
Seems obvious performance regression?
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