Github user maropu commented on the pull request:
https://github.com/apache/spark/pull/11461#issuecomment-191076647
The benchmark results are as follows;
```
Running benchmark: INT Decode(Lower Skew)
Running case: PassThrough(1.000)
Running case: RunLengthEncoding(1.002)
Running case: DictionaryEncoding(0.500)
Running case: IntDelta(0.250)
Running case: IntDeltaBinaryPacking(0.068)
Intel(R) Core(TM) i7-4578U CPU @ 3.00GHz
INT Decode(Lower Skew): Best/Avg Time(ms) Rate(M/s) Per
Row(ns) Relative
-------------------------------------------------------------------------------------------
PassThrough(1.000) 285 / 360 235.7
4.2 1.0X
RunLengthEncoding(1.002) 700 / 715 95.8
10.4 0.4X
DictionaryEncoding(0.500) 763 / 782 88.0
11.4 0.4X
IntDelta(0.250) 684 / 702 98.1
10.2 0.4X
IntDeltaBinaryPacking(0.068) 805 / 811 83.4
12.0 0.4X
Running benchmark: INT Decode(Higher Skew)
Running case: PassThrough(1.000)
Running case: RunLengthEncoding(1.337)
Running case: DictionaryEncoding(0.501)
Running case: IntDelta(0.250)
Running case: IntDeltaBinaryPacking(0.182)
Intel(R) Core(TM) i7-4578U CPU @ 3.00GHz
INT Decode(Higher Skew): Best/Avg Time(ms) Rate(M/s) Per
Row(ns) Relative
-------------------------------------------------------------------------------------------
PassThrough(1.000) 690 / 716 97.3
10.3 1.0X
RunLengthEncoding(1.337) 1127 / 1148 59.5
16.8 0.6X
DictionaryEncoding(0.501) 836 / 856 80.2
12.5 0.8X
IntDelta(0.250) 763 / 778 88.0
11.4 0.9X
IntDeltaBinaryPacking(0.182) 873 / 884 76.9
13.0 0.8X
```
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