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| author | Meng Zhuo <mengzhuo1203@gmail.com> | 2020-03-24 15:07:43 +0800 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2020-03-26 17:48:20 +0000 |
| commit | 918d4d46cd17192a81a6aced57d09827560ad9f0 (patch) | |
| tree | 64728f4ae3b98d3d501253bae64fe3eb6bd74c3c /src/runtime/cpuflags.go | |
| parent | d1ecfcc1e8baa0bb3a9fb504e8c14125a69139ba (diff) | |
| download | go-918d4d46cd17192a81a6aced57d09827560ad9f0.tar.gz go-918d4d46cd17192a81a6aced57d09827560ad9f0.zip | |
runtime: improve MIPS64x memclr
Using MIPS MSA VLD/VST to improve mips64x large memclr.
name old time/op new time/op delta
Memclr/5 23.2ns ± 0% 21.5ns ± 0% -7.33% (p=0.000 n=9+8)
Memclr/16 20.1ns ± 0% 17.1ns ± 0% -14.93% (p=0.000 n=10+10)
Memclr/64 27.2ns ± 0% 19.1ns ± 0% -29.70% (p=0.000 n=9+9)
Memclr/256 76.8ns ± 0% 24.1ns ± 0% -68.66% (p=0.000 n=10+10)
Memclr/4096 1.12µs ± 1% 0.18µs ± 0% -84.32% (p=0.000 n=10+8)
Memclr/65536 18.0µs ± 0% 2.8µs ± 0% -84.29% (p=0.000 n=10+10)
Memclr/1M 288µs ± 0% 45µs ± 0% -84.20% (p=0.000 n=10+10)
Memclr/4M 1.15ms ± 0% 0.18ms ± 0% -84.21% (p=0.000 n=9+10)
Memclr/8M 2.34ms ± 0% 1.39ms ± 0% -40.55% (p=0.000 n=10+8)
Memclr/16M 4.72ms ± 0% 4.74ms ± 0% +0.52% (p=0.000 n=9+10)
Memclr/64M 18.9ms ± 0% 18.9ms ± 0% ~ (p=0.436 n=10+10)
GoMemclr/5 13.7ns ± 0% 16.9ns ± 0% +23.36% (p=0.000 n=10+10)
GoMemclr/16 14.3ns ± 0% 9.0ns ± 0% -37.27% (p=0.000 n=10+9)
GoMemclr/64 26.9ns ± 0% 13.7ns ± 0% -49.07% (p=0.000 n=10+10)
GoMemclr/256 77.8ns ± 0% 13.0ns ± 0% -83.24% (p=0.000 n=9+10)
name old speed new speed delta
Memclr/5 215MB/s ± 0% 232MB/s ± 0% +7.74% (p=0.000 n=9+9)
Memclr/16 795MB/s ± 0% 935MB/s ± 0% +17.60% (p=0.000 n=10+10)
Memclr/64 2.35GB/s ± 0% 3.35GB/s ± 0% +42.33% (p=0.000 n=10+9)
Memclr/256 3.34GB/s ± 0% 10.65GB/s ± 0% +219.16% (p=0.000 n=10+10)
Memclr/4096 3.65GB/s ± 1% 23.30GB/s ± 0% +538.36% (p=0.000 n=10+10)
Memclr/65536 3.65GB/s ± 0% 23.21GB/s ± 0% +536.59% (p=0.000 n=10+10)
Memclr/1M 3.64GB/s ± 0% 23.07GB/s ± 0% +532.96% (p=0.000 n=10+10)
Memclr/4M 3.64GB/s ± 0% 23.08GB/s ± 0% +533.36% (p=0.000 n=9+10)
Memclr/8M 3.58GB/s ± 0% 6.02GB/s ± 0% +68.20% (p=0.000 n=10+8)
Memclr/16M 3.56GB/s ± 0% 3.54GB/s ± 0% -0.51% (p=0.000 n=9+10)
Memclr/64M 3.55GB/s ± 0% 3.55GB/s ± 0% ~ (p=0.436 n=10+10)
GoMemclr/5 364MB/s ± 0% 296MB/s ± 0% -18.76% (p=0.000 n=9+10)
GoMemclr/16 1.12GB/s ± 0% 1.78GB/s ± 0% +58.86% (p=0.000 n=10+10)
GoMemclr/64 2.38GB/s ± 0% 4.66GB/s ± 0% +96.27% (p=0.000 n=10+9)
GoMemclr/256 3.29GB/s ± 0% 19.62GB/s ± 0% +496.45% (p=0.000 n=10+9)
Change-Id: I457858368f2875fd66818a41d2f0c190a850e8f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/218177
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/runtime/cpuflags.go')
| -rw-r--r-- | src/runtime/cpuflags.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/runtime/cpuflags.go b/src/runtime/cpuflags.go index 4bd894d984..5104650c5d 100644 --- a/src/runtime/cpuflags.go +++ b/src/runtime/cpuflags.go @@ -17,6 +17,8 @@ const ( offsetX86HasSSE2 = unsafe.Offsetof(cpu.X86.HasSSE2) offsetARMHasIDIVA = unsafe.Offsetof(cpu.ARM.HasIDIVA) + + offsetMIPS64XHasMSA = unsafe.Offsetof(cpu.MIPS64X.HasMSA) ) var ( |