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From "Youwei Wang (Code Review)" <>
Subject [Impala-CR](cdh5-trunk) IMPALA-2809: Improve ByteSwap with builtin function or SSSE3 or AVX2.
Date Fri, 22 Jul 2016 02:33:35 GMT
Youwei Wang has posted comments on this change.

Change subject: IMPALA-2809: Improve ByteSwap with builtin function or SSSE3 or AVX2.

Patch Set 32:

(1 comment)
File be/src/benchmarks/

Line 46: ///                      OldImpala           1.224e+06                  1X
> Done
Hi Jim. I have rerun this benchmark using the latest benchmarking output system. The result
is copied as following:

I0722 22:22:56.790194 28889] Machine Info: Intel(R) Core(TM) i5-4460
 CPU @ 3.20GHz
ByteSwap benchmark:        Function  iters/ms   10%ile   50%ile   90%ile     10%ile     50%ile
                                                                         (relative) (relative)
                         FastScalar                600      639      680         1X      
  1X         1X
                              SSSE3           5.75e+03 5.85e+03 5.88e+03      9.58X      9.15X
                               AVX2           1.38e+04 1.76e+04 1.77e+04        23X      27.6X
                               SIMD           1.75e+04 1.77e+04 1.78e+04      29.2X      27.8X

For this new result is a little wide here, (more than 90 characters), I have done some little
modification to make sure the result confirms to the format requirement of Impala code.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I392ed5a8d5683f30f161282c228c1aedd7b648c1
Gerrit-PatchSet: 32
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Youwei Wang <>
Gerrit-Reviewer: Alex Behm <>
Gerrit-Reviewer: Jim Apple <>
Gerrit-Reviewer: Marcel Kornacker <>
Gerrit-Reviewer: Mostafa Mokhtar <>
Gerrit-Reviewer: Tim Armstrong <>
Gerrit-Reviewer: Youwei Wang <>
Gerrit-HasComments: Yes

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