Github user viirya commented on the issue:
https://github.com/apache/spark/pull/13439
Benchmark again on new change:
Environment:
Java HotSpot(TM) 64-Bit Server VM 1.8.0_71-b15 on Linux
3.19.0-25-generic
Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
OnHeap, Not Constant:
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
On Heap, Not Constant 42 / 49 1.0
1020.3 1.0X
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
On Heap, Not Constant 41 / 46 1.0
989.0 1.0X
OnHeap, Constant:
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
On Heap, Constant 28 / 33 1.5
674.2 1.0X
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
On Heap, Constant 27 / 33 1.5
658.4 1.0X
OffHeap, Not Constant:
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
Off Heap, Not Constant 63 / 73 0.6
1547.3 1.0X
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
Off Heap, Not Constant 68 / 74 0.6
1663.5 1.0X
OffHeap, Constant:
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
Off Heap, Constant 27 / 33 1.5
662.5 1.0X
ColumnVector R/W: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
Off Heap, Constant 27 / 33 1.5
657.1 1.0X
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