Michael Munday
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cfd89164bb
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all: make copyright headers consistent with one space after period
Continuation of CL 20111.
Change-Id: Ie2f62237e6ec316989c021de9b267cc9d6ee6676
Reviewed-on: https://go-review.googlesource.com/32830
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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2016-11-04 20:46:25 +00:00 |
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Michael Munday
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47c58b4667
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bytes, strings: optimize multi-byte index operations on s390x
Use vector instructions to speed up indexing operations for short
strings (64 bytes or less).
bytes_s390x.go and strings_s390x.go are based on their amd64
equivalents in CL 31690.
bytes package:
name old time/op new time/op delta
Index/10 40.3ns ± 7% 11.3ns ± 4% -72.06% (p=0.000 n=10+10)
Index/32 196ns ± 1% 27ns ± 2% -86.25% (p=0.000 n=10+10)
Index/4K 28.9µs ± 1% 1.5µs ± 2% -94.94% (p=0.000 n=9+9)
Index/4M 30.1ms ± 2% 1.5ms ± 3% -94.94% (p=0.000 n=10+10)
Index/64M 549ms ±13% 28ms ± 3% -94.87% (p=0.000 n=10+9)
IndexEasy/10 18.8ns ±11% 11.5ns ± 2% -38.81% (p=0.000 n=10+10)
IndexEasy/32 23.6ns ± 6% 28.1ns ± 3% +19.29% (p=0.000 n=10+10)
IndexEasy/4K 251ns ± 5% 223ns ± 8% -11.04% (p=0.000 n=10+10)
IndexEasy/4M 318µs ± 9% 266µs ± 8% -16.42% (p=0.000 n=10+10)
IndexEasy/64M 14.7ms ±16% 13.2ms ±11% -10.22% (p=0.001 n=10+10)
strings package:
name old time/op new time/op delta
IndexRune 88.1ns ±16% 28.9ns ± 4% -67.20% (p=0.000 n=10+10)
IndexRuneLongString 456ns ± 7% 34ns ± 3% -92.50% (p=0.000 n=10+10)
IndexRuneFastPath 12.9ns ±14% 11.1ns ± 6% -13.84% (p=0.000 n=10+10)
Index 13.0ns ± 7% 11.3ns ± 4% -13.31% (p=0.000 n=10+10)
IndexHard1 3.38ms ± 9% 0.07ms ± 1% -97.79% (p=0.000 n=10+10)
IndexHard2 3.58ms ± 7% 0.37ms ± 2% -89.78% (p=0.000 n=10+10)
IndexHard3 3.47ms ± 7% 0.75ms ± 1% -78.52% (p=0.000 n=10+10)
IndexHard4 3.56ms ± 6% 1.34ms ± 0% -62.39% (p=0.000 n=9+9)
Change-Id: If36c2afb8c02e80fcaa1cf5ec2abb0a2be08c7d1
Reviewed-on: https://go-review.googlesource.com/32447
Run-TryBot: Michael Munday <munday@ca.ibm.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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2016-11-01 13:17:57 +00:00 |
Ilya Tocar
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44f1854c9d
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bytes: Use the same algorithm as strings for Index
name old time/op new time/op delta
IndexByte32-48 9.05ns ± 7% 9.59ns ±11% +5.93% (p=0.001 n=19+20)
IndexByte4K-48 118ns ± 4% 122ns ± 8% +3.52% (p=0.002 n=19+19)
IndexByte4M-48 172µs ±13% 188µs ±12% +9.49% (p=0.000 n=20+20)
IndexByte64M-48 8.00ms ±14% 8.05ms ±23% ~ (p=0.799 n=20+20)
IndexBytePortable32-48 41.7ns ±15% 42.5ns ±12% ~ (p=0.372 n=20+20)
IndexBytePortable4K-48 3.08µs ±16% 3.26µs ±10% +5.77% (p=0.018 n=20+20)
IndexBytePortable4M-48 3.12ms ±17% 3.20ms ±10% ~ (p=0.157 n=20+20)
IndexBytePortable64M-48 54.0ms ±14% 55.3ms ±14% ~ (p=0.640 n=20+20)
Index32-48 230ns ±12% 46ns ± 6% -79.87% (p=0.000 n=20+19)
Index4K-48 43.2µs ± 9% 3.2µs ±12% -92.58% (p=0.000 n=19+20)
Index4M-48 44.4ms ± 7% 3.3ms ±13% -92.59% (p=0.000 n=19+20)
Index64M-48 714ms ±10% 56ms ± 8% -92.22% (p=0.000 n=19+19)
IndexEasy32-48 52.7ns ±10% 31.0ns ±11% -41.21% (p=0.000 n=20+20)
IndexEasy4K-48 139ns ± 5% 1598ns ± 6% +1046.37% (p=0.000 n=19+19)
IndexEasy4M-48 179µs ± 8% 1674µs ±10% +834.31% (p=0.000 n=19+20)
IndexEasy64M-48 8.56ms ±10% 27.82ms ±16% +225.14% (p=0.000 n=19+20)
name old speed new speed delta
IndexByte32-48 3.52GB/s ± 7% 3.35GB/s ±11% -4.99% (p=0.001 n=20+20)
IndexByte4K-48 34.5GB/s ± 7% 33.2GB/s ±10% -3.67% (p=0.002 n=20+20)
IndexByte4M-48 24.6GB/s ±14% 22.4GB/s ±14% -8.73% (p=0.000 n=20+20)
IndexByte64M-48 8.42GB/s ±16% 8.42GB/s ±19% ~ (p=0.799 n=20+20)
IndexBytePortable32-48 770MB/s ±13% 756MB/s ±11% ~ (p=0.383 n=20+20)
IndexBytePortable4K-48 1.34GB/s ±14% 1.26GB/s ±10% -5.76% (p=0.018 n=20+20)
IndexBytePortable4M-48 1.35GB/s ±15% 1.31GB/s ±11% ~ (p=0.157 n=20+20)
IndexBytePortable64M-48 1.25GB/s ±16% 1.22GB/s ±13% ~ (p=0.640 n=20+20)
Index32-48 138MB/s ± 8% 687MB/s ± 8% +398.57% (p=0.000 n=19+20)
Index4K-48 94.9MB/s ± 9% 1280.5MB/s ±11% +1249.11% (p=0.000 n=19+20)
Index4M-48 94.6MB/s ± 7% 1278.5MB/s ±12% +1250.99% (p=0.000 n=19+20)
Index64M-48 94.2MB/s ±10% 1210.9MB/s ± 8% +1185.04% (p=0.000 n=19+19)
IndexEasy32-48 608MB/s ±10% 1035MB/s ±10% +70.15% (p=0.000 n=20+20)
IndexEasy4K-48 29.3GB/s ± 6% 2.6GB/s ± 6% -91.24% (p=0.000 n=19+19)
IndexEasy4M-48 23.3GB/s ±10% 2.5GB/s ± 9% -89.23% (p=0.000 n=20+20)
IndexEasy64M-48 7.86GB/s ±11% 2.42GB/s ±14% -69.18% (p=0.000 n=19+20)
Change-Id: Ia191f0a6ca80e113397d9ed98d25f195768b65bc
Reviewed-on: https://go-review.googlesource.com/22550
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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2016-09-01 18:05:50 +00:00 |