encoding/json: parallelize most benchmarks
Don't bother with BenchmarkDecoderStream — it's doing something subtle
with the input buffer that isn't easy to replicate in a parallel test.
Results remain comparable with the non-parallel version with -cpu=1:
benchmark old ns/op new ns/op delta
BenchmarkCodeEncoder
22815832 21058729 -7.70%
BenchmarkCodeEncoder-6
22190561 3579757 -83.87%
BenchmarkCodeMarshal
25356621 25396429 +0.16%
BenchmarkCodeMarshal-6
25359813 4944908 -80.50%
BenchmarkCodeDecoder
94794556 88016360 -7.15%
BenchmarkCodeDecoder-6
93795028 16726283 -82.17%
BenchmarkDecoderStream 532 583 +9.59%
BenchmarkDecoderStream-6 598 550 -8.03%
BenchmarkCodeUnmarshal
97644168 89162504 -8.69%
BenchmarkCodeUnmarshal-6
96615302 17036419 -82.37%
BenchmarkCodeUnmarshalReuse
91747073 90298479 -1.58%
BenchmarkCodeUnmarshalReuse-6
89397165 15518005 -82.64%
BenchmarkUnmarshalString 808 843 +4.33%
BenchmarkUnmarshalString-6 912 220 -75.88%
BenchmarkUnmarshalFloat64 695 732 +5.32%
BenchmarkUnmarshalFloat64-6 710 191 -73.10%
BenchmarkUnmarshalInt64 635 640 +0.79%
BenchmarkUnmarshalInt64-6 618 185 -70.06%
BenchmarkIssue10335 916 947 +3.38%
BenchmarkIssue10335-6 879 216 -75.43%
BenchmarkNumberIsValid 34.7 34.3 -1.15%
BenchmarkNumberIsValid-6 34.9 36.7 +5.16%
BenchmarkNumberIsValidRegexp 1174 1121 -4.51%
BenchmarkNumberIsValidRegexp-6 1134 1119 -1.32%
BenchmarkSkipValue
20506938 20708060 +0.98%
BenchmarkSkipValue-6
21627665 22375630 +3.46%
BenchmarkEncoderEncode 690 726 +5.22%
BenchmarkEncoderEncode-6 649 157 -75.81%
benchmark old MB/s new MB/s speedup
BenchmarkCodeEncoder 85.05 92.15 1.08x
BenchmarkCodeEncoder-6 87.45 542.07 6.20x
BenchmarkCodeMarshal 76.53 76.41 1.00x
BenchmarkCodeMarshal-6 76.52 392.42 5.13x
BenchmarkCodeDecoder 20.47 22.05 1.08x
BenchmarkCodeDecoder-6 20.69 116.01 5.61x
BenchmarkCodeUnmarshal 19.87 21.76 1.10x
BenchmarkCodeUnmarshal-6 20.08 113.90 5.67x
BenchmarkSkipValue 90.55 89.67 0.99x
BenchmarkSkipValue-6 90.83 87.80 0.97x
benchmark old allocs new allocs delta
BenchmarkIssue10335 4 4 +0.00%
BenchmarkIssue10335-6 4 4 +0.00%
BenchmarkEncoderEncode 1 1 +0.00%
BenchmarkEncoderEncode-6 1 1 +0.00%
benchmark old bytes new bytes delta
BenchmarkIssue10335 320 320 +0.00%
BenchmarkIssue10335-6 320 320 +0.00%
BenchmarkEncoderEncode 8 8 +0.00%
BenchmarkEncoderEncode-6 8 8 +0.00%
updates #18177
Change-Id: Ia4f5bf5ac0afbadb1705ed9f9e1b39dabba67b40
Reviewed-on: https://go-review.googlesource.com/36724
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>