go/test/inline_sync.go

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sync: allow inlining the Mutex.Unlock fast path Make use of the newly-enabled limited midstack inlining. Similar changes will be done in followup CLs. name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 18.9ns ± 0% -1.92% (p=0.000 n=20+19) MutexUncontended-4 5.24ns ± 0% 4.75ns ± 1% -9.25% (p=0.000 n=20+20) MutexUncontended-16 2.10ns ± 0% 2.05ns ± 0% -2.38% (p=0.000 n=15+19) Mutex 19.6ns ± 0% 19.3ns ± 1% -1.92% (p=0.000 n=20+17) Mutex-4 54.6ns ± 5% 52.4ns ± 4% -4.09% (p=0.000 n=20+20) Mutex-16 133ns ± 5% 139ns ± 2% +4.23% (p=0.000 n=20+16) MutexSlack 33.4ns ± 2% 18.9ns ± 1% -43.56% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 225ns ± 8% +9.12% (p=0.000 n=20+18) MutexSlack-16 89.4ns ± 1% 98.4ns ± 1% +10.10% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 58.2ns ± 3% -3.75% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 103ns ± 7% -1.68% (p=0.007 n=20+20) MutexWork-16 157ns ± 1% 163ns ± 2% +3.90% (p=0.000 n=18+18) MutexWorkSlack 70.2ns ± 5% 57.7ns ± 1% -17.81% (p=0.000 n=19+20) MutexWorkSlack-4 277ns ±13% 276ns ±13% ~ (p=0.682 n=20+19) MutexWorkSlack-16 156ns ± 0% 147ns ± 0% -5.62% (p=0.000 n=16+14) MutexNoSpin 966ns ± 0% 968ns ± 0% +0.11% (p=0.029 n=15+20) MutexNoSpin-4 269ns ± 4% 270ns ± 2% ~ (p=0.807 n=20+19) MutexNoSpin-16 122ns ± 0% 120ns ± 4% -1.63% (p=0.000 n=19+19) MutexSpin 3.13µs ± 0% 3.13µs ± 1% +0.16% (p=0.004 n=18+20) MutexSpin-4 826ns ± 1% 832ns ± 2% +0.74% (p=0.000 n=19+16) MutexSpin-16 397ns ± 1% 395ns ± 0% -0.50% (p=0.000 n=19+17) RWMutexUncontended 71.4ns ± 0% 69.5ns ± 0% -2.72% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 17.5ns ± 0% -4.92% (p=0.000 n=20+18) RWMutexUncontended-16 8.01ns ± 0% 7.92ns ± 0% -1.15% (p=0.000 n=18+18) RWMutexWrite100 24.9ns ± 0% 24.9ns ± 1% ~ (p=0.099 n=19+20) RWMutexWrite100-4 46.5ns ± 3% 46.2ns ± 4% ~ (p=0.253 n=17+19) RWMutexWrite100-16 68.9ns ± 3% 69.9ns ± 5% +1.46% (p=0.012 n=18+20) RWMutexWrite10 27.1ns ± 0% 27.0ns ± 2% ~ (p=0.128 n=17+20) RWMutexWrite10-4 34.8ns ± 1% 34.7ns ± 2% ~ (p=0.180 n=20+18) RWMutexWrite10-16 37.5ns ± 2% 37.2ns ± 4% -0.89% (p=0.023 n=20+20) RWMutexWorkWrite100 164ns ± 0% 164ns ± 0% ~ (p=0.106 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 193ns ± 3% +3.46% (p=0.000 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 210ns ± 3% +2.96% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% -0.20% (p=0.017 n=20+19) RWMutexWorkWrite10-4 179ns ± 1% 178ns ± 2% ~ (p=0.215 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 192ns ± 2% ~ (p=0.166 n=15+19) linux/amd64 bin/go 14630572 (previous commit 14605947, +24625/+0.17%) Change-Id: I3f9d1765801fe0b8deb1bc2728b8bba8a7508e23 Reviewed-on: https://go-review.googlesource.com/c/go/+/148958 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 23:28:44 +00:00
// errorcheck -0 -m
//go:build !nacl && !386 && !wasm && !arm && !gcflags_noopt
sync: allow inlining the Mutex.Unlock fast path Make use of the newly-enabled limited midstack inlining. Similar changes will be done in followup CLs. name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 18.9ns ± 0% -1.92% (p=0.000 n=20+19) MutexUncontended-4 5.24ns ± 0% 4.75ns ± 1% -9.25% (p=0.000 n=20+20) MutexUncontended-16 2.10ns ± 0% 2.05ns ± 0% -2.38% (p=0.000 n=15+19) Mutex 19.6ns ± 0% 19.3ns ± 1% -1.92% (p=0.000 n=20+17) Mutex-4 54.6ns ± 5% 52.4ns ± 4% -4.09% (p=0.000 n=20+20) Mutex-16 133ns ± 5% 139ns ± 2% +4.23% (p=0.000 n=20+16) MutexSlack 33.4ns ± 2% 18.9ns ± 1% -43.56% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 225ns ± 8% +9.12% (p=0.000 n=20+18) MutexSlack-16 89.4ns ± 1% 98.4ns ± 1% +10.10% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 58.2ns ± 3% -3.75% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 103ns ± 7% -1.68% (p=0.007 n=20+20) MutexWork-16 157ns ± 1% 163ns ± 2% +3.90% (p=0.000 n=18+18) MutexWorkSlack 70.2ns ± 5% 57.7ns ± 1% -17.81% (p=0.000 n=19+20) MutexWorkSlack-4 277ns ±13% 276ns ±13% ~ (p=0.682 n=20+19) MutexWorkSlack-16 156ns ± 0% 147ns ± 0% -5.62% (p=0.000 n=16+14) MutexNoSpin 966ns ± 0% 968ns ± 0% +0.11% (p=0.029 n=15+20) MutexNoSpin-4 269ns ± 4% 270ns ± 2% ~ (p=0.807 n=20+19) MutexNoSpin-16 122ns ± 0% 120ns ± 4% -1.63% (p=0.000 n=19+19) MutexSpin 3.13µs ± 0% 3.13µs ± 1% +0.16% (p=0.004 n=18+20) MutexSpin-4 826ns ± 1% 832ns ± 2% +0.74% (p=0.000 n=19+16) MutexSpin-16 397ns ± 1% 395ns ± 0% -0.50% (p=0.000 n=19+17) RWMutexUncontended 71.4ns ± 0% 69.5ns ± 0% -2.72% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 17.5ns ± 0% -4.92% (p=0.000 n=20+18) RWMutexUncontended-16 8.01ns ± 0% 7.92ns ± 0% -1.15% (p=0.000 n=18+18) RWMutexWrite100 24.9ns ± 0% 24.9ns ± 1% ~ (p=0.099 n=19+20) RWMutexWrite100-4 46.5ns ± 3% 46.2ns ± 4% ~ (p=0.253 n=17+19) RWMutexWrite100-16 68.9ns ± 3% 69.9ns ± 5% +1.46% (p=0.012 n=18+20) RWMutexWrite10 27.1ns ± 0% 27.0ns ± 2% ~ (p=0.128 n=17+20) RWMutexWrite10-4 34.8ns ± 1% 34.7ns ± 2% ~ (p=0.180 n=20+18) RWMutexWrite10-16 37.5ns ± 2% 37.2ns ± 4% -0.89% (p=0.023 n=20+20) RWMutexWorkWrite100 164ns ± 0% 164ns ± 0% ~ (p=0.106 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 193ns ± 3% +3.46% (p=0.000 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 210ns ± 3% +2.96% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% -0.20% (p=0.017 n=20+19) RWMutexWorkWrite10-4 179ns ± 1% 178ns ± 2% ~ (p=0.215 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 192ns ± 2% ~ (p=0.166 n=15+19) linux/amd64 bin/go 14630572 (previous commit 14605947, +24625/+0.17%) Change-Id: I3f9d1765801fe0b8deb1bc2728b8bba8a7508e23 Reviewed-on: https://go-review.googlesource.com/c/go/+/148958 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 23:28:44 +00:00
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test, using compiler diagnostic flags, that inlining of functions
// imported from the sync package is working.
// Compiles but does not run.
sync: allow inlining the Mutex.Lock fast path name old time/op new time/op delta MutexUncontended 18.9ns ± 0% 16.2ns ± 0% -14.29% (p=0.000 n=19+19) MutexUncontended-4 4.75ns ± 1% 4.08ns ± 0% -14.20% (p=0.000 n=20+19) MutexUncontended-16 2.05ns ± 0% 2.11ns ± 0% +2.93% (p=0.000 n=19+16) Mutex 19.3ns ± 1% 16.2ns ± 0% -15.86% (p=0.000 n=17+19) Mutex-4 52.4ns ± 4% 48.6ns ± 9% -7.22% (p=0.000 n=20+20) Mutex-16 139ns ± 2% 140ns ± 3% +1.03% (p=0.011 n=16+20) MutexSlack 18.9ns ± 1% 16.2ns ± 1% -13.96% (p=0.000 n=20+20) MutexSlack-4 225ns ± 8% 211ns ±10% -5.94% (p=0.000 n=18+19) MutexSlack-16 98.4ns ± 1% 90.9ns ± 1% -7.60% (p=0.000 n=17+18) MutexWork 58.2ns ± 3% 55.4ns ± 0% -4.82% (p=0.000 n=20+17) MutexWork-4 103ns ± 7% 95ns ±18% -8.03% (p=0.000 n=20+20) MutexWork-16 163ns ± 2% 155ns ± 2% -4.47% (p=0.000 n=18+18) MutexWorkSlack 57.7ns ± 1% 55.4ns ± 0% -3.99% (p=0.000 n=20+13) MutexWorkSlack-4 276ns ±13% 260ns ±10% -5.64% (p=0.001 n=19+19) MutexWorkSlack-16 147ns ± 0% 156ns ± 1% +5.87% (p=0.000 n=14+19) MutexNoSpin 968ns ± 0% 900ns ± 1% -6.98% (p=0.000 n=20+18) MutexNoSpin-4 270ns ± 2% 255ns ± 2% -5.74% (p=0.000 n=19+20) MutexNoSpin-16 120ns ± 4% 112ns ± 0% -6.99% (p=0.000 n=19+14) MutexSpin 3.13µs ± 1% 3.19µs ± 6% ~ (p=0.401 n=20+20) MutexSpin-4 832ns ± 2% 831ns ± 1% -0.17% (p=0.023 n=16+18) MutexSpin-16 395ns ± 0% 399ns ± 0% +0.94% (p=0.000 n=17+19) RWMutexUncontended 69.5ns ± 0% 68.4ns ± 0% -1.59% (p=0.000 n=20+20) RWMutexUncontended-4 17.5ns ± 0% 16.7ns ± 0% -4.30% (p=0.000 n=18+17) RWMutexUncontended-16 7.92ns ± 0% 7.87ns ± 0% -0.61% (p=0.000 n=18+17) RWMutexWrite100 24.9ns ± 1% 25.0ns ± 1% +0.32% (p=0.000 n=20+20) RWMutexWrite100-4 46.2ns ± 4% 46.2ns ± 5% ~ (p=0.840 n=19+20) RWMutexWrite100-16 69.9ns ± 5% 69.9ns ± 3% ~ (p=0.545 n=20+19) RWMutexWrite10 27.0ns ± 2% 26.8ns ± 2% -0.98% (p=0.001 n=20+20) RWMutexWrite10-4 34.7ns ± 2% 35.0ns ± 4% ~ (p=0.191 n=18+20) RWMutexWrite10-16 37.2ns ± 4% 37.3ns ± 2% ~ (p=0.438 n=20+19) RWMutexWorkWrite100 164ns ± 0% 163ns ± 0% -0.24% (p=0.025 n=20+20) RWMutexWorkWrite100-4 193ns ± 3% 191ns ± 2% -1.06% (p=0.027 n=20+20) RWMutexWorkWrite100-16 210ns ± 3% 207ns ± 3% -1.22% (p=0.038 n=20+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% ~ (all equal) RWMutexWorkWrite10-4 178ns ± 2% 179ns ± 2% ~ (p=0.186 n=20+20) RWMutexWorkWrite10-16 192ns ± 2% 192ns ± 2% ~ (p=0.731 n=19+20) linux/amd64 bin/go 14663387 (previous commit 14630572, +32815/+0.22%) Change-Id: I98171006dce14069b1a62da07c3d165455a7906b Reviewed-on: https://go-review.googlesource.com/c/go/+/148959 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 13:49:38 +00:00
// FIXME: This test is disabled on architectures where atomic operations
// are function calls rather than intrinsics, since this prevents inlining
// of the sync fast paths. This test should be re-enabled once the problem
// is solved.
sync: allow inlining the Mutex.Unlock fast path Make use of the newly-enabled limited midstack inlining. Similar changes will be done in followup CLs. name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 18.9ns ± 0% -1.92% (p=0.000 n=20+19) MutexUncontended-4 5.24ns ± 0% 4.75ns ± 1% -9.25% (p=0.000 n=20+20) MutexUncontended-16 2.10ns ± 0% 2.05ns ± 0% -2.38% (p=0.000 n=15+19) Mutex 19.6ns ± 0% 19.3ns ± 1% -1.92% (p=0.000 n=20+17) Mutex-4 54.6ns ± 5% 52.4ns ± 4% -4.09% (p=0.000 n=20+20) Mutex-16 133ns ± 5% 139ns ± 2% +4.23% (p=0.000 n=20+16) MutexSlack 33.4ns ± 2% 18.9ns ± 1% -43.56% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 225ns ± 8% +9.12% (p=0.000 n=20+18) MutexSlack-16 89.4ns ± 1% 98.4ns ± 1% +10.10% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 58.2ns ± 3% -3.75% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 103ns ± 7% -1.68% (p=0.007 n=20+20) MutexWork-16 157ns ± 1% 163ns ± 2% +3.90% (p=0.000 n=18+18) MutexWorkSlack 70.2ns ± 5% 57.7ns ± 1% -17.81% (p=0.000 n=19+20) MutexWorkSlack-4 277ns ±13% 276ns ±13% ~ (p=0.682 n=20+19) MutexWorkSlack-16 156ns ± 0% 147ns ± 0% -5.62% (p=0.000 n=16+14) MutexNoSpin 966ns ± 0% 968ns ± 0% +0.11% (p=0.029 n=15+20) MutexNoSpin-4 269ns ± 4% 270ns ± 2% ~ (p=0.807 n=20+19) MutexNoSpin-16 122ns ± 0% 120ns ± 4% -1.63% (p=0.000 n=19+19) MutexSpin 3.13µs ± 0% 3.13µs ± 1% +0.16% (p=0.004 n=18+20) MutexSpin-4 826ns ± 1% 832ns ± 2% +0.74% (p=0.000 n=19+16) MutexSpin-16 397ns ± 1% 395ns ± 0% -0.50% (p=0.000 n=19+17) RWMutexUncontended 71.4ns ± 0% 69.5ns ± 0% -2.72% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 17.5ns ± 0% -4.92% (p=0.000 n=20+18) RWMutexUncontended-16 8.01ns ± 0% 7.92ns ± 0% -1.15% (p=0.000 n=18+18) RWMutexWrite100 24.9ns ± 0% 24.9ns ± 1% ~ (p=0.099 n=19+20) RWMutexWrite100-4 46.5ns ± 3% 46.2ns ± 4% ~ (p=0.253 n=17+19) RWMutexWrite100-16 68.9ns ± 3% 69.9ns ± 5% +1.46% (p=0.012 n=18+20) RWMutexWrite10 27.1ns ± 0% 27.0ns ± 2% ~ (p=0.128 n=17+20) RWMutexWrite10-4 34.8ns ± 1% 34.7ns ± 2% ~ (p=0.180 n=20+18) RWMutexWrite10-16 37.5ns ± 2% 37.2ns ± 4% -0.89% (p=0.023 n=20+20) RWMutexWorkWrite100 164ns ± 0% 164ns ± 0% ~ (p=0.106 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 193ns ± 3% +3.46% (p=0.000 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 210ns ± 3% +2.96% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% -0.20% (p=0.017 n=20+19) RWMutexWorkWrite10-4 179ns ± 1% 178ns ± 2% ~ (p=0.215 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 192ns ± 2% ~ (p=0.166 n=15+19) linux/amd64 bin/go 14630572 (previous commit 14605947, +24625/+0.17%) Change-Id: I3f9d1765801fe0b8deb1bc2728b8bba8a7508e23 Reviewed-on: https://go-review.googlesource.com/c/go/+/148958 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 23:28:44 +00:00
package foo
import (
"sync"
)
var mutex *sync.Mutex
func small5() { // ERROR "can inline small5"
// the Unlock fast path should be inlined
mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock"
sync: allow inlining the Mutex.Unlock fast path Make use of the newly-enabled limited midstack inlining. Similar changes will be done in followup CLs. name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 18.9ns ± 0% -1.92% (p=0.000 n=20+19) MutexUncontended-4 5.24ns ± 0% 4.75ns ± 1% -9.25% (p=0.000 n=20+20) MutexUncontended-16 2.10ns ± 0% 2.05ns ± 0% -2.38% (p=0.000 n=15+19) Mutex 19.6ns ± 0% 19.3ns ± 1% -1.92% (p=0.000 n=20+17) Mutex-4 54.6ns ± 5% 52.4ns ± 4% -4.09% (p=0.000 n=20+20) Mutex-16 133ns ± 5% 139ns ± 2% +4.23% (p=0.000 n=20+16) MutexSlack 33.4ns ± 2% 18.9ns ± 1% -43.56% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 225ns ± 8% +9.12% (p=0.000 n=20+18) MutexSlack-16 89.4ns ± 1% 98.4ns ± 1% +10.10% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 58.2ns ± 3% -3.75% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 103ns ± 7% -1.68% (p=0.007 n=20+20) MutexWork-16 157ns ± 1% 163ns ± 2% +3.90% (p=0.000 n=18+18) MutexWorkSlack 70.2ns ± 5% 57.7ns ± 1% -17.81% (p=0.000 n=19+20) MutexWorkSlack-4 277ns ±13% 276ns ±13% ~ (p=0.682 n=20+19) MutexWorkSlack-16 156ns ± 0% 147ns ± 0% -5.62% (p=0.000 n=16+14) MutexNoSpin 966ns ± 0% 968ns ± 0% +0.11% (p=0.029 n=15+20) MutexNoSpin-4 269ns ± 4% 270ns ± 2% ~ (p=0.807 n=20+19) MutexNoSpin-16 122ns ± 0% 120ns ± 4% -1.63% (p=0.000 n=19+19) MutexSpin 3.13µs ± 0% 3.13µs ± 1% +0.16% (p=0.004 n=18+20) MutexSpin-4 826ns ± 1% 832ns ± 2% +0.74% (p=0.000 n=19+16) MutexSpin-16 397ns ± 1% 395ns ± 0% -0.50% (p=0.000 n=19+17) RWMutexUncontended 71.4ns ± 0% 69.5ns ± 0% -2.72% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 17.5ns ± 0% -4.92% (p=0.000 n=20+18) RWMutexUncontended-16 8.01ns ± 0% 7.92ns ± 0% -1.15% (p=0.000 n=18+18) RWMutexWrite100 24.9ns ± 0% 24.9ns ± 1% ~ (p=0.099 n=19+20) RWMutexWrite100-4 46.5ns ± 3% 46.2ns ± 4% ~ (p=0.253 n=17+19) RWMutexWrite100-16 68.9ns ± 3% 69.9ns ± 5% +1.46% (p=0.012 n=18+20) RWMutexWrite10 27.1ns ± 0% 27.0ns ± 2% ~ (p=0.128 n=17+20) RWMutexWrite10-4 34.8ns ± 1% 34.7ns ± 2% ~ (p=0.180 n=20+18) RWMutexWrite10-16 37.5ns ± 2% 37.2ns ± 4% -0.89% (p=0.023 n=20+20) RWMutexWorkWrite100 164ns ± 0% 164ns ± 0% ~ (p=0.106 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 193ns ± 3% +3.46% (p=0.000 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 210ns ± 3% +2.96% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% -0.20% (p=0.017 n=20+19) RWMutexWorkWrite10-4 179ns ± 1% 178ns ± 2% ~ (p=0.215 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 192ns ± 2% ~ (p=0.166 n=15+19) linux/amd64 bin/go 14630572 (previous commit 14605947, +24625/+0.17%) Change-Id: I3f9d1765801fe0b8deb1bc2728b8bba8a7508e23 Reviewed-on: https://go-review.googlesource.com/c/go/+/148958 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 23:28:44 +00:00
}
sync: allow inlining the Mutex.Lock fast path name old time/op new time/op delta MutexUncontended 18.9ns ± 0% 16.2ns ± 0% -14.29% (p=0.000 n=19+19) MutexUncontended-4 4.75ns ± 1% 4.08ns ± 0% -14.20% (p=0.000 n=20+19) MutexUncontended-16 2.05ns ± 0% 2.11ns ± 0% +2.93% (p=0.000 n=19+16) Mutex 19.3ns ± 1% 16.2ns ± 0% -15.86% (p=0.000 n=17+19) Mutex-4 52.4ns ± 4% 48.6ns ± 9% -7.22% (p=0.000 n=20+20) Mutex-16 139ns ± 2% 140ns ± 3% +1.03% (p=0.011 n=16+20) MutexSlack 18.9ns ± 1% 16.2ns ± 1% -13.96% (p=0.000 n=20+20) MutexSlack-4 225ns ± 8% 211ns ±10% -5.94% (p=0.000 n=18+19) MutexSlack-16 98.4ns ± 1% 90.9ns ± 1% -7.60% (p=0.000 n=17+18) MutexWork 58.2ns ± 3% 55.4ns ± 0% -4.82% (p=0.000 n=20+17) MutexWork-4 103ns ± 7% 95ns ±18% -8.03% (p=0.000 n=20+20) MutexWork-16 163ns ± 2% 155ns ± 2% -4.47% (p=0.000 n=18+18) MutexWorkSlack 57.7ns ± 1% 55.4ns ± 0% -3.99% (p=0.000 n=20+13) MutexWorkSlack-4 276ns ±13% 260ns ±10% -5.64% (p=0.001 n=19+19) MutexWorkSlack-16 147ns ± 0% 156ns ± 1% +5.87% (p=0.000 n=14+19) MutexNoSpin 968ns ± 0% 900ns ± 1% -6.98% (p=0.000 n=20+18) MutexNoSpin-4 270ns ± 2% 255ns ± 2% -5.74% (p=0.000 n=19+20) MutexNoSpin-16 120ns ± 4% 112ns ± 0% -6.99% (p=0.000 n=19+14) MutexSpin 3.13µs ± 1% 3.19µs ± 6% ~ (p=0.401 n=20+20) MutexSpin-4 832ns ± 2% 831ns ± 1% -0.17% (p=0.023 n=16+18) MutexSpin-16 395ns ± 0% 399ns ± 0% +0.94% (p=0.000 n=17+19) RWMutexUncontended 69.5ns ± 0% 68.4ns ± 0% -1.59% (p=0.000 n=20+20) RWMutexUncontended-4 17.5ns ± 0% 16.7ns ± 0% -4.30% (p=0.000 n=18+17) RWMutexUncontended-16 7.92ns ± 0% 7.87ns ± 0% -0.61% (p=0.000 n=18+17) RWMutexWrite100 24.9ns ± 1% 25.0ns ± 1% +0.32% (p=0.000 n=20+20) RWMutexWrite100-4 46.2ns ± 4% 46.2ns ± 5% ~ (p=0.840 n=19+20) RWMutexWrite100-16 69.9ns ± 5% 69.9ns ± 3% ~ (p=0.545 n=20+19) RWMutexWrite10 27.0ns ± 2% 26.8ns ± 2% -0.98% (p=0.001 n=20+20) RWMutexWrite10-4 34.7ns ± 2% 35.0ns ± 4% ~ (p=0.191 n=18+20) RWMutexWrite10-16 37.2ns ± 4% 37.3ns ± 2% ~ (p=0.438 n=20+19) RWMutexWorkWrite100 164ns ± 0% 163ns ± 0% -0.24% (p=0.025 n=20+20) RWMutexWorkWrite100-4 193ns ± 3% 191ns ± 2% -1.06% (p=0.027 n=20+20) RWMutexWorkWrite100-16 210ns ± 3% 207ns ± 3% -1.22% (p=0.038 n=20+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% ~ (all equal) RWMutexWorkWrite10-4 178ns ± 2% 179ns ± 2% ~ (p=0.186 n=20+20) RWMutexWorkWrite10-16 192ns ± 2% 192ns ± 2% ~ (p=0.731 n=19+20) linux/amd64 bin/go 14663387 (previous commit 14630572, +32815/+0.22%) Change-Id: I98171006dce14069b1a62da07c3d165455a7906b Reviewed-on: https://go-review.googlesource.com/c/go/+/148959 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 13:49:38 +00:00
func small6() { // ERROR "can inline small6"
// the Lock fast path should be inlined
mutex.Lock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Lock"
sync: allow inlining the Mutex.Lock fast path name old time/op new time/op delta MutexUncontended 18.9ns ± 0% 16.2ns ± 0% -14.29% (p=0.000 n=19+19) MutexUncontended-4 4.75ns ± 1% 4.08ns ± 0% -14.20% (p=0.000 n=20+19) MutexUncontended-16 2.05ns ± 0% 2.11ns ± 0% +2.93% (p=0.000 n=19+16) Mutex 19.3ns ± 1% 16.2ns ± 0% -15.86% (p=0.000 n=17+19) Mutex-4 52.4ns ± 4% 48.6ns ± 9% -7.22% (p=0.000 n=20+20) Mutex-16 139ns ± 2% 140ns ± 3% +1.03% (p=0.011 n=16+20) MutexSlack 18.9ns ± 1% 16.2ns ± 1% -13.96% (p=0.000 n=20+20) MutexSlack-4 225ns ± 8% 211ns ±10% -5.94% (p=0.000 n=18+19) MutexSlack-16 98.4ns ± 1% 90.9ns ± 1% -7.60% (p=0.000 n=17+18) MutexWork 58.2ns ± 3% 55.4ns ± 0% -4.82% (p=0.000 n=20+17) MutexWork-4 103ns ± 7% 95ns ±18% -8.03% (p=0.000 n=20+20) MutexWork-16 163ns ± 2% 155ns ± 2% -4.47% (p=0.000 n=18+18) MutexWorkSlack 57.7ns ± 1% 55.4ns ± 0% -3.99% (p=0.000 n=20+13) MutexWorkSlack-4 276ns ±13% 260ns ±10% -5.64% (p=0.001 n=19+19) MutexWorkSlack-16 147ns ± 0% 156ns ± 1% +5.87% (p=0.000 n=14+19) MutexNoSpin 968ns ± 0% 900ns ± 1% -6.98% (p=0.000 n=20+18) MutexNoSpin-4 270ns ± 2% 255ns ± 2% -5.74% (p=0.000 n=19+20) MutexNoSpin-16 120ns ± 4% 112ns ± 0% -6.99% (p=0.000 n=19+14) MutexSpin 3.13µs ± 1% 3.19µs ± 6% ~ (p=0.401 n=20+20) MutexSpin-4 832ns ± 2% 831ns ± 1% -0.17% (p=0.023 n=16+18) MutexSpin-16 395ns ± 0% 399ns ± 0% +0.94% (p=0.000 n=17+19) RWMutexUncontended 69.5ns ± 0% 68.4ns ± 0% -1.59% (p=0.000 n=20+20) RWMutexUncontended-4 17.5ns ± 0% 16.7ns ± 0% -4.30% (p=0.000 n=18+17) RWMutexUncontended-16 7.92ns ± 0% 7.87ns ± 0% -0.61% (p=0.000 n=18+17) RWMutexWrite100 24.9ns ± 1% 25.0ns ± 1% +0.32% (p=0.000 n=20+20) RWMutexWrite100-4 46.2ns ± 4% 46.2ns ± 5% ~ (p=0.840 n=19+20) RWMutexWrite100-16 69.9ns ± 5% 69.9ns ± 3% ~ (p=0.545 n=20+19) RWMutexWrite10 27.0ns ± 2% 26.8ns ± 2% -0.98% (p=0.001 n=20+20) RWMutexWrite10-4 34.7ns ± 2% 35.0ns ± 4% ~ (p=0.191 n=18+20) RWMutexWrite10-16 37.2ns ± 4% 37.3ns ± 2% ~ (p=0.438 n=20+19) RWMutexWorkWrite100 164ns ± 0% 163ns ± 0% -0.24% (p=0.025 n=20+20) RWMutexWorkWrite100-4 193ns ± 3% 191ns ± 2% -1.06% (p=0.027 n=20+20) RWMutexWorkWrite100-16 210ns ± 3% 207ns ± 3% -1.22% (p=0.038 n=20+20) RWMutexWorkWrite10 153ns ± 0% 153ns ± 0% ~ (all equal) RWMutexWorkWrite10-4 178ns ± 2% 179ns ± 2% ~ (p=0.186 n=20+20) RWMutexWorkWrite10-16 192ns ± 2% 192ns ± 2% ~ (p=0.731 n=19+20) linux/amd64 bin/go 14663387 (previous commit 14630572, +32815/+0.22%) Change-Id: I98171006dce14069b1a62da07c3d165455a7906b Reviewed-on: https://go-review.googlesource.com/c/go/+/148959 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-11-09 13:49:38 +00:00
}
var once *sync.Once
func small7() { // ERROR "can inline small7"
// the Do fast path should be inlined
once.Do(small5) // ERROR "inlining call to sync\.\(\*Once\)\.Do"
}
sync: allow inlining the RWMutex.RUnlock fast path RWMutex.RLock is already inlineable, so add a test for it as well. name old time/op new time/op delta RWMutexUncontended 66.5ns ± 0% 60.3ns ± 1% -9.38% (p=0.000 n=12+20) RWMutexUncontended-4 16.7ns ± 0% 15.3ns ± 1% -8.49% (p=0.000 n=17+20) RWMutexUncontended-16 7.86ns ± 0% 7.69ns ± 0% -2.08% (p=0.000 n=18+15) RWMutexWrite100 25.1ns ± 0% 24.0ns ± 1% -4.28% (p=0.000 n=20+18) RWMutexWrite100-4 46.7ns ± 5% 44.1ns ± 4% -5.53% (p=0.000 n=20+20) RWMutexWrite100-16 68.3ns ±11% 65.7ns ± 8% -3.81% (p=0.003 n=20+20) RWMutexWrite10 26.7ns ± 1% 25.7ns ± 0% -3.75% (p=0.000 n=17+14) RWMutexWrite10-4 34.9ns ± 2% 33.8ns ± 2% -3.15% (p=0.000 n=20+20) RWMutexWrite10-16 37.4ns ± 2% 36.1ns ± 2% -3.51% (p=0.000 n=18+20) RWMutexWorkWrite100 163ns ± 0% 162ns ± 0% -0.89% (p=0.000 n=18+20) RWMutexWorkWrite100-4 189ns ± 4% 184ns ± 4% -2.89% (p=0.000 n=19+20) RWMutexWorkWrite100-16 207ns ± 4% 200ns ± 2% -3.07% (p=0.000 n=19+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -0.75% (p=0.000 n=20+20) RWMutexWorkWrite10-4 177ns ± 1% 176ns ± 2% -0.63% (p=0.004 n=17+20) RWMutexWorkWrite10-16 191ns ± 2% 189ns ± 1% -0.83% (p=0.015 n=20+17) linux/amd64 bin/go 14688201 (previous commit 14675861, +12340/+0.08%) The cumulative effect of this and the previous 3 commits is: name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 16.4ns ± 1% -15.13% (p=0.000 n=20+20) MutexUncontended-4 5.24ns ± 0% 4.09ns ± 0% -21.95% (p=0.000 n=20+18) MutexUncontended-16 2.10ns ± 0% 2.12ns ± 0% +0.95% (p=0.000 n=15+17) Mutex 19.6ns ± 0% 16.3ns ± 1% -17.12% (p=0.000 n=20+20) Mutex-4 54.6ns ± 5% 45.6ns ±10% -16.51% (p=0.000 n=20+19) Mutex-16 133ns ± 5% 130ns ± 3% -1.99% (p=0.002 n=20+20) MutexSlack 33.4ns ± 2% 16.2ns ± 0% -51.44% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 209ns ± 9% ~ (p=0.154 n=20+20) MutexSlack-16 89.4ns ± 1% 90.9ns ± 2% +1.70% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 55.3ns ± 1% -8.59% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 97ns ±11% -7.95% (p=0.000 n=20+20) MutexWork-16 157ns ± 1% 158ns ± 1% +0.66% (p=0.001 n=18+17) MutexWorkSlack 70.2ns ± 5% 55.3ns ± 0% -21.30% (p=0.000 n=19+18) MutexWorkSlack-4 277ns ±13% 260ns ±15% -6.35% (p=0.002 n=20+18) MutexWorkSlack-16 156ns ± 0% 146ns ± 1% -6.40% (p=0.000 n=16+19) MutexNoSpin 966ns ± 0% 976ns ± 1% +0.97% (p=0.000 n=15+17) MutexNoSpin-4 269ns ± 4% 272ns ± 4% +1.15% (p=0.048 n=20+18) MutexNoSpin-16 122ns ± 0% 119ns ± 1% -2.63% (p=0.000 n=19+15) MutexSpin 3.13µs ± 0% 3.12µs ± 0% -0.17% (p=0.000 n=18+18) MutexSpin-4 826ns ± 1% 833ns ± 1% +0.84% (p=0.000 n=19+17) MutexSpin-16 397ns ± 1% 394ns ± 1% -0.78% (p=0.000 n=19+19) Once 5.67ns ± 0% 2.07ns ± 2% -63.43% (p=0.000 n=20+20) Once-4 1.47ns ± 2% 0.54ns ± 3% -63.49% (p=0.000 n=19+20) Once-16 0.58ns ± 0% 0.17ns ± 5% -70.49% (p=0.000 n=17+17) RWMutexUncontended 71.4ns ± 0% 60.3ns ± 1% -15.60% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 15.3ns ± 1% -17.14% (p=0.000 n=20+20) RWMutexUncontended-16 8.01ns ± 0% 7.69ns ± 0% -3.91% (p=0.000 n=18+15) RWMutexWrite100 24.9ns ± 0% 24.0ns ± 1% -3.57% (p=0.000 n=19+18) RWMutexWrite100-4 46.5ns ± 3% 44.1ns ± 4% -5.09% (p=0.000 n=17+20) RWMutexWrite100-16 68.9ns ± 3% 65.7ns ± 8% -4.65% (p=0.000 n=18+20) RWMutexWrite10 27.1ns ± 0% 25.7ns ± 0% -5.25% (p=0.000 n=17+14) RWMutexWrite10-4 34.8ns ± 1% 33.8ns ± 2% -2.96% (p=0.000 n=20+20) RWMutexWrite10-16 37.5ns ± 2% 36.1ns ± 2% -3.72% (p=0.000 n=20+20) RWMutexWorkWrite100 164ns ± 0% 162ns ± 0% -1.49% (p=0.000 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 184ns ± 4% ~ (p=0.097 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 200ns ± 2% -1.58% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -1.21% (p=0.000 n=20+20) RWMutexWorkWrite10-4 179ns ± 1% 176ns ± 2% -1.25% (p=0.000 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 189ns ± 1% -0.94% (p=0.000 n=15+17) Change-Id: I9269bf2ac42a04c610624f707d3268dcb17390f8 Reviewed-on: https://go-review.googlesource.com/c/go/+/152698 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2018-11-13 08:08:17 +00:00
var rwmutex *sync.RWMutex
func small8() { // ERROR "can inline small8"
// the RUnlock fast path should be inlined
rwmutex.RUnlock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RUnlock" "inlining call to atomic\.\(\*Int32\)\.Add"
sync: allow inlining the RWMutex.RUnlock fast path RWMutex.RLock is already inlineable, so add a test for it as well. name old time/op new time/op delta RWMutexUncontended 66.5ns ± 0% 60.3ns ± 1% -9.38% (p=0.000 n=12+20) RWMutexUncontended-4 16.7ns ± 0% 15.3ns ± 1% -8.49% (p=0.000 n=17+20) RWMutexUncontended-16 7.86ns ± 0% 7.69ns ± 0% -2.08% (p=0.000 n=18+15) RWMutexWrite100 25.1ns ± 0% 24.0ns ± 1% -4.28% (p=0.000 n=20+18) RWMutexWrite100-4 46.7ns ± 5% 44.1ns ± 4% -5.53% (p=0.000 n=20+20) RWMutexWrite100-16 68.3ns ±11% 65.7ns ± 8% -3.81% (p=0.003 n=20+20) RWMutexWrite10 26.7ns ± 1% 25.7ns ± 0% -3.75% (p=0.000 n=17+14) RWMutexWrite10-4 34.9ns ± 2% 33.8ns ± 2% -3.15% (p=0.000 n=20+20) RWMutexWrite10-16 37.4ns ± 2% 36.1ns ± 2% -3.51% (p=0.000 n=18+20) RWMutexWorkWrite100 163ns ± 0% 162ns ± 0% -0.89% (p=0.000 n=18+20) RWMutexWorkWrite100-4 189ns ± 4% 184ns ± 4% -2.89% (p=0.000 n=19+20) RWMutexWorkWrite100-16 207ns ± 4% 200ns ± 2% -3.07% (p=0.000 n=19+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -0.75% (p=0.000 n=20+20) RWMutexWorkWrite10-4 177ns ± 1% 176ns ± 2% -0.63% (p=0.004 n=17+20) RWMutexWorkWrite10-16 191ns ± 2% 189ns ± 1% -0.83% (p=0.015 n=20+17) linux/amd64 bin/go 14688201 (previous commit 14675861, +12340/+0.08%) The cumulative effect of this and the previous 3 commits is: name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 16.4ns ± 1% -15.13% (p=0.000 n=20+20) MutexUncontended-4 5.24ns ± 0% 4.09ns ± 0% -21.95% (p=0.000 n=20+18) MutexUncontended-16 2.10ns ± 0% 2.12ns ± 0% +0.95% (p=0.000 n=15+17) Mutex 19.6ns ± 0% 16.3ns ± 1% -17.12% (p=0.000 n=20+20) Mutex-4 54.6ns ± 5% 45.6ns ±10% -16.51% (p=0.000 n=20+19) Mutex-16 133ns ± 5% 130ns ± 3% -1.99% (p=0.002 n=20+20) MutexSlack 33.4ns ± 2% 16.2ns ± 0% -51.44% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 209ns ± 9% ~ (p=0.154 n=20+20) MutexSlack-16 89.4ns ± 1% 90.9ns ± 2% +1.70% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 55.3ns ± 1% -8.59% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 97ns ±11% -7.95% (p=0.000 n=20+20) MutexWork-16 157ns ± 1% 158ns ± 1% +0.66% (p=0.001 n=18+17) MutexWorkSlack 70.2ns ± 5% 55.3ns ± 0% -21.30% (p=0.000 n=19+18) MutexWorkSlack-4 277ns ±13% 260ns ±15% -6.35% (p=0.002 n=20+18) MutexWorkSlack-16 156ns ± 0% 146ns ± 1% -6.40% (p=0.000 n=16+19) MutexNoSpin 966ns ± 0% 976ns ± 1% +0.97% (p=0.000 n=15+17) MutexNoSpin-4 269ns ± 4% 272ns ± 4% +1.15% (p=0.048 n=20+18) MutexNoSpin-16 122ns ± 0% 119ns ± 1% -2.63% (p=0.000 n=19+15) MutexSpin 3.13µs ± 0% 3.12µs ± 0% -0.17% (p=0.000 n=18+18) MutexSpin-4 826ns ± 1% 833ns ± 1% +0.84% (p=0.000 n=19+17) MutexSpin-16 397ns ± 1% 394ns ± 1% -0.78% (p=0.000 n=19+19) Once 5.67ns ± 0% 2.07ns ± 2% -63.43% (p=0.000 n=20+20) Once-4 1.47ns ± 2% 0.54ns ± 3% -63.49% (p=0.000 n=19+20) Once-16 0.58ns ± 0% 0.17ns ± 5% -70.49% (p=0.000 n=17+17) RWMutexUncontended 71.4ns ± 0% 60.3ns ± 1% -15.60% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 15.3ns ± 1% -17.14% (p=0.000 n=20+20) RWMutexUncontended-16 8.01ns ± 0% 7.69ns ± 0% -3.91% (p=0.000 n=18+15) RWMutexWrite100 24.9ns ± 0% 24.0ns ± 1% -3.57% (p=0.000 n=19+18) RWMutexWrite100-4 46.5ns ± 3% 44.1ns ± 4% -5.09% (p=0.000 n=17+20) RWMutexWrite100-16 68.9ns ± 3% 65.7ns ± 8% -4.65% (p=0.000 n=18+20) RWMutexWrite10 27.1ns ± 0% 25.7ns ± 0% -5.25% (p=0.000 n=17+14) RWMutexWrite10-4 34.8ns ± 1% 33.8ns ± 2% -2.96% (p=0.000 n=20+20) RWMutexWrite10-16 37.5ns ± 2% 36.1ns ± 2% -3.72% (p=0.000 n=20+20) RWMutexWorkWrite100 164ns ± 0% 162ns ± 0% -1.49% (p=0.000 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 184ns ± 4% ~ (p=0.097 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 200ns ± 2% -1.58% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -1.21% (p=0.000 n=20+20) RWMutexWorkWrite10-4 179ns ± 1% 176ns ± 2% -1.25% (p=0.000 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 189ns ± 1% -0.94% (p=0.000 n=15+17) Change-Id: I9269bf2ac42a04c610624f707d3268dcb17390f8 Reviewed-on: https://go-review.googlesource.com/c/go/+/152698 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2018-11-13 08:08:17 +00:00
}
func small9() { // ERROR "can inline small9"
// the RLock fast path should be inlined
rwmutex.RLock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RLock" "inlining call to atomic\.\(\*Int32\)\.Add"
sync: allow inlining the RWMutex.RUnlock fast path RWMutex.RLock is already inlineable, so add a test for it as well. name old time/op new time/op delta RWMutexUncontended 66.5ns ± 0% 60.3ns ± 1% -9.38% (p=0.000 n=12+20) RWMutexUncontended-4 16.7ns ± 0% 15.3ns ± 1% -8.49% (p=0.000 n=17+20) RWMutexUncontended-16 7.86ns ± 0% 7.69ns ± 0% -2.08% (p=0.000 n=18+15) RWMutexWrite100 25.1ns ± 0% 24.0ns ± 1% -4.28% (p=0.000 n=20+18) RWMutexWrite100-4 46.7ns ± 5% 44.1ns ± 4% -5.53% (p=0.000 n=20+20) RWMutexWrite100-16 68.3ns ±11% 65.7ns ± 8% -3.81% (p=0.003 n=20+20) RWMutexWrite10 26.7ns ± 1% 25.7ns ± 0% -3.75% (p=0.000 n=17+14) RWMutexWrite10-4 34.9ns ± 2% 33.8ns ± 2% -3.15% (p=0.000 n=20+20) RWMutexWrite10-16 37.4ns ± 2% 36.1ns ± 2% -3.51% (p=0.000 n=18+20) RWMutexWorkWrite100 163ns ± 0% 162ns ± 0% -0.89% (p=0.000 n=18+20) RWMutexWorkWrite100-4 189ns ± 4% 184ns ± 4% -2.89% (p=0.000 n=19+20) RWMutexWorkWrite100-16 207ns ± 4% 200ns ± 2% -3.07% (p=0.000 n=19+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -0.75% (p=0.000 n=20+20) RWMutexWorkWrite10-4 177ns ± 1% 176ns ± 2% -0.63% (p=0.004 n=17+20) RWMutexWorkWrite10-16 191ns ± 2% 189ns ± 1% -0.83% (p=0.015 n=20+17) linux/amd64 bin/go 14688201 (previous commit 14675861, +12340/+0.08%) The cumulative effect of this and the previous 3 commits is: name old time/op new time/op delta MutexUncontended 19.3ns ± 1% 16.4ns ± 1% -15.13% (p=0.000 n=20+20) MutexUncontended-4 5.24ns ± 0% 4.09ns ± 0% -21.95% (p=0.000 n=20+18) MutexUncontended-16 2.10ns ± 0% 2.12ns ± 0% +0.95% (p=0.000 n=15+17) Mutex 19.6ns ± 0% 16.3ns ± 1% -17.12% (p=0.000 n=20+20) Mutex-4 54.6ns ± 5% 45.6ns ±10% -16.51% (p=0.000 n=20+19) Mutex-16 133ns ± 5% 130ns ± 3% -1.99% (p=0.002 n=20+20) MutexSlack 33.4ns ± 2% 16.2ns ± 0% -51.44% (p=0.000 n=19+20) MutexSlack-4 206ns ± 5% 209ns ± 9% ~ (p=0.154 n=20+20) MutexSlack-16 89.4ns ± 1% 90.9ns ± 2% +1.70% (p=0.000 n=18+17) MutexWork 60.5ns ± 0% 55.3ns ± 1% -8.59% (p=0.000 n=12+20) MutexWork-4 105ns ± 5% 97ns ±11% -7.95% (p=0.000 n=20+20) MutexWork-16 157ns ± 1% 158ns ± 1% +0.66% (p=0.001 n=18+17) MutexWorkSlack 70.2ns ± 5% 55.3ns ± 0% -21.30% (p=0.000 n=19+18) MutexWorkSlack-4 277ns ±13% 260ns ±15% -6.35% (p=0.002 n=20+18) MutexWorkSlack-16 156ns ± 0% 146ns ± 1% -6.40% (p=0.000 n=16+19) MutexNoSpin 966ns ± 0% 976ns ± 1% +0.97% (p=0.000 n=15+17) MutexNoSpin-4 269ns ± 4% 272ns ± 4% +1.15% (p=0.048 n=20+18) MutexNoSpin-16 122ns ± 0% 119ns ± 1% -2.63% (p=0.000 n=19+15) MutexSpin 3.13µs ± 0% 3.12µs ± 0% -0.17% (p=0.000 n=18+18) MutexSpin-4 826ns ± 1% 833ns ± 1% +0.84% (p=0.000 n=19+17) MutexSpin-16 397ns ± 1% 394ns ± 1% -0.78% (p=0.000 n=19+19) Once 5.67ns ± 0% 2.07ns ± 2% -63.43% (p=0.000 n=20+20) Once-4 1.47ns ± 2% 0.54ns ± 3% -63.49% (p=0.000 n=19+20) Once-16 0.58ns ± 0% 0.17ns ± 5% -70.49% (p=0.000 n=17+17) RWMutexUncontended 71.4ns ± 0% 60.3ns ± 1% -15.60% (p=0.000 n=16+20) RWMutexUncontended-4 18.4ns ± 4% 15.3ns ± 1% -17.14% (p=0.000 n=20+20) RWMutexUncontended-16 8.01ns ± 0% 7.69ns ± 0% -3.91% (p=0.000 n=18+15) RWMutexWrite100 24.9ns ± 0% 24.0ns ± 1% -3.57% (p=0.000 n=19+18) RWMutexWrite100-4 46.5ns ± 3% 44.1ns ± 4% -5.09% (p=0.000 n=17+20) RWMutexWrite100-16 68.9ns ± 3% 65.7ns ± 8% -4.65% (p=0.000 n=18+20) RWMutexWrite10 27.1ns ± 0% 25.7ns ± 0% -5.25% (p=0.000 n=17+14) RWMutexWrite10-4 34.8ns ± 1% 33.8ns ± 2% -2.96% (p=0.000 n=20+20) RWMutexWrite10-16 37.5ns ± 2% 36.1ns ± 2% -3.72% (p=0.000 n=20+20) RWMutexWorkWrite100 164ns ± 0% 162ns ± 0% -1.49% (p=0.000 n=12+20) RWMutexWorkWrite100-4 186ns ± 3% 184ns ± 4% ~ (p=0.097 n=20+20) RWMutexWorkWrite100-16 204ns ± 2% 200ns ± 2% -1.58% (p=0.000 n=18+20) RWMutexWorkWrite10 153ns ± 0% 151ns ± 1% -1.21% (p=0.000 n=20+20) RWMutexWorkWrite10-4 179ns ± 1% 176ns ± 2% -1.25% (p=0.000 n=19+20) RWMutexWorkWrite10-16 191ns ± 1% 189ns ± 1% -0.94% (p=0.000 n=15+17) Change-Id: I9269bf2ac42a04c610624f707d3268dcb17390f8 Reviewed-on: https://go-review.googlesource.com/c/go/+/152698 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2018-11-13 08:08:17 +00:00
}