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author | Dave Cheney <dave@cheney.net> | 2015-04-07 21:38:02 +1000 |
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committer | Dave Cheney <dave@cheney.net> | 2015-04-09 14:49:31 +0000 |
commit | ee349b5d771b1c3e58f77b07e200a0a630667f22 (patch) | |
tree | 3ec38956bed7aa1a4faa8b41809314f4568e3410 /src/encoding/gob/decode.go | |
parent | b9ba4ed22b2f6237042bafcfa697593a73281f36 (diff) | |
download | go-ee349b5d771b1c3e58f77b07e200a0a630667f22.tar.gz go-ee349b5d771b1c3e58f77b07e200a0a630667f22.zip |
runtime: add arm64 runtime.cmpstring and bytes.Compare
Add arm64 assembly implementation of runtime.cmpstring and bytes.Compare.
benchmark old ns/op new ns/op delta
BenchmarkCompareBytesEqual 98.0 27.5 -71.94%
BenchmarkCompareBytesToNil 9.38 10.0 +6.61%
BenchmarkCompareBytesEmpty 13.3 10.0 -24.81%
BenchmarkCompareBytesIdentical 98.0 27.5 -71.94%
BenchmarkCompareBytesSameLength 43.3 16.3 -62.36%
BenchmarkCompareBytesDifferentLength 43.4 16.3 -62.44%
BenchmarkCompareBytesBigUnaligned 6979680 1360979 -80.50%
BenchmarkCompareBytesBig 6915995 1381979 -80.02%
BenchmarkCompareBytesBigIdentical 6781440 1327304 -80.43%
benchmark old MB/s new MB/s speedup
BenchmarkCompareBytesBigUnaligned 150.23 770.46 5.13x
BenchmarkCompareBytesBig 151.62 758.76 5.00x
BenchmarkCompareBytesBigIdentical 154.63 790.01 5.11x
* note, the machine we are benchmarking on has some issues. What is clear is
compared to a few days ago the old MB/s value has increased from ~115 to 150.
I'm less certain about the new MB/s number, which used to be close to 1Gb/s.
Change-Id: I4f31b2c7a06296e13912aacc958525632cb0450d
Reviewed-on: https://go-review.googlesource.com/8541
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Diffstat (limited to 'src/encoding/gob/decode.go')
0 files changed, 0 insertions, 0 deletions