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FROM ubuntu:16.04 | |
# install java 8 and other tools | |
RUN apt-get update && apt-get install -y --no-install-recommends default-jdk curl git && \ | |
rm -rf /var/lib/apt/lists/* && \ | |
# needed to install cassandra | |
apt-get install -y --no-install-recommends curl && \ | |
echo "deb http://www.apache.org/dist/cassandra/debian 311x main" >> /etc/apt/sources.list.d/cassandra.sources.list && \ | |
curl https://www.apache.org/dist/cassandra/KEYS | apt-key add - && \ | |
apt-key adv --keyserver pool.sks-keyservers.net --recv-key A278B781FE4B2BDA && \ |
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package main | |
import ( | |
"fmt" | |
"io/ioutil" | |
"log" | |
"os" | |
"path/filepath" | |
"strings" | |
"sync" |
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package main | |
import ( | |
"fmt" | |
"log" | |
"strings" | |
"time" | |
"gopkg.in/src-d/go-billy.v4/memfs" | |
git "gopkg.in/src-d/go-git.v4" |
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for i := 0; i < b.N; i++ { | |
b.StopTimer() | |
chans := make([]<-chan int, n) | |
for j := range chans { | |
chans[j] = asChan(0, 1, 2, 3, 4, 5, 6, 7, 8, 9) | |
} | |
b.StartTimer() | |
c := merge.fun(chans...) | |
for range c { | |
} |
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import matplotlib.pyplot as plt | |
ns = [2**x for x in range(11)]; | |
data = { | |
'goroutines': [6919, 13212, 25469, 50819, 88566, 162391, 299955, 574043, 1129372, 2251411, 4760560], | |
'reflection': [10868, 22335, 54882, 148218, 543921, 1694021, 6102920, 22648976, 90204929, 383579039, 1676544681], | |
'recursion': [2658, 14707, 44520, 114676, 261880, 560284, 1117642, 2242910, 4784719, 10044186, 20599475], | |
} | |
for (label, values) in data.items(): | |
plt.plot(ns, values, label=label) |
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func BenchmarkMerge(b *testing.B) { | |
merges := []struct { | |
name string | |
fun func(...<-chan int) <-chan int | |
}{ | |
{"goroutines", merge}, | |
{"reflect", mergeReflect}, | |
{"recursion", mergeRec}, | |
} | |
for _, merge := range merges { |
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func BenchmarkMerge(b *testing.B) { | |
merges := []struct { | |
name string | |
fun func(...<-chan int) <-chan int | |
}{ | |
{"goroutines", merge}, | |
{"reflect", mergeReflect}, | |
{"recursion", mergeRec}, | |
} | |
for _, merge := range merges { |
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func BenchmarkMerge(b *testing.B) { | |
merges := []func(...<-chan int) <-chan int{ | |
merge, | |
mergeReflect, | |
mergeRec, | |
} | |
for _, merge := range merges { | |
for i := 0; i < b.N; i++ { | |
c := merge(asChan(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)) | |
for range c { |
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func BenchmarkMergeRec(b *testing.B) { | |
for i := 0; i < b.N; i++ { | |
c := mergeRec(asChan(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)) | |
for range c { | |
} | |
} | |
} |
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func BenchmarkMergeReflect(b *testing.B) { | |
for i := 0; i < b.N; i++ { | |
c := mergeReflect(asChan(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)) | |
for range c { | |
} | |
} | |
} |