benchmark of channels go1.8rc1

bench.go

package benchs

import (
	"runtime"
	"sync"
	"testing"
)

func Benchmark_Channel_Parallel(b *testing.B) {
	cpu := runtime.GOMAXPROCS(-1)
	trafic := make(chan *struct{}, cpu)
	wg := &sync.WaitGroup{}
	wg.Add(cpu)
	for i := 0; i < cpu; i++ {
		go func() {
			wg.Done()
			for _ = range trafic {
			}
		}()
	}
	obj := &struct{}{}
	wg.Wait()
	b.ResetTimer()
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			trafic <- obj
		}
	})
	close(trafic)
}

func Benchmark_Channel(b *testing.B) {
	cpu := runtime.GOMAXPROCS(-1)
	trafic := make(chan *struct{}, cpu)
	wg := &sync.WaitGroup{}
	wg.Add(cpu)
	for i := 0; i < cpu; i++ {
		go func() {
			wg.Done()
			for _ = range trafic {
			}
		}()
	}
	obj := &struct{}{}
	wg.Wait()
	b.ResetTimer()

	for i := 0; i < b.N; i++ {
		trafic <- obj
	}
	close(trafic)
}
/*
MacBook Pro 4 CPU 2,4 GHz Intel Core i5 4 ГБ 1600 МГц DDR3
$ go test -bench=.  -run=. -benchtime=1s -benchmem ./benchs/ -cpu=4,8,16,32 -count=10
Benchmark_Channel_Parallel-4             5000000               327 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               366 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               365 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               319 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               366 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               354 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               367 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               367 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               337 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-4             5000000               366 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               308 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               308 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               310 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               307 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               308 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               310 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               309 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               312 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               308 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-8             5000000               308 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               255 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               262 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               262 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               264 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               261 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               261 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               254 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               263 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               263 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-16            5000000               261 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               226 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               228 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               227 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               221 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               233 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               221 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               223 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               230 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               227 ns/op               0 B/op          0 allocs/op
Benchmark_Channel_Parallel-32           10000000               225 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                     10000000               236 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                      5000000               213 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                      5000000               354 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                     10000000               248 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                      5000000               345 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                      5000000               347 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                      5000000               251 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                     10000000               233 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                     10000000               283 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-4                     10000000               244 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               251 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                     10000000               236 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               248 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                     10000000               271 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               269 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               258 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               282 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               259 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               298 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-8                      5000000               288 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               346 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               358 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               336 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               287 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               343 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               342 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               323 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               360 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               349 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-16                     5000000               350 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               492 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               427 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               451 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               386 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               461 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               500 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               501 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               533 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               507 ns/op               0 B/op          0 allocs/op
Benchmark_Channel-32                     3000000               492 ns/op               0 B/op          0 allocs/op
PASS
ok      github.com/antonikonovalov/nn/benchs    161.638s

*/