Github user viirya commented on the pull request:
https://github.com/apache/spark/pull/12729#issuecomment-216814141
I tried to use `-Xint` in compileOption to disable JIT and ran the
benchmark of skewness and kurtosis with this patch.
Java HotSpot(TM) 64-Bit Server VM 1.8.0_25-b17 on Linux
3.13.0-57-generic
Westmere E56xx/L56xx/X56xx (Nehalem-C)
skewness and kurtosis: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
-------------------------------------------------------------------------------------------
skewness and kurtosis codegen=false 9866 / 10283 5.3
188.2 1.0X
skewness and kurtosis codegen=true 2413 / 2595 21.7
46.0 4.1X
Looks like without JIT, this patch performs faster?
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