syncthing/test/transfer-bench_test.go

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// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
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// +build integration,benchmark
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package integration
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import (
"log"
"math/rand"
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"os"
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"testing"
"time"
"github.com/syncthing/syncthing/lib/rc"
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)
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func TestBenchmarkTransferManyFiles(t *testing.T) {
setupAndBenchmarkTransfer(t, 10000, 15)
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}
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func TestBenchmarkTransferLargeFile1G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 30)
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}
func TestBenchmarkTransferLargeFile2G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 31)
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}
func TestBenchmarkTransferLargeFile4G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 32)
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}
func TestBenchmarkTransferLargeFile8G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 33)
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}
func TestBenchmarkTransferLargeFile16G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 34)
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}
func TestBenchmarkTransferLargeFile32G(t *testing.T) {
setupAndBenchmarkTransfer(t, 1, 35)
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}
func setupAndBenchmarkTransfer(t *testing.T, files, sizeExp int) {
cleanBenchmarkTransfer(t)
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log.Println("Generating files...")
var err error
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if files == 1 {
// Special case. Generate one file with the specified size exactly.
var fd *os.File
fd, err = os.Open("../LICENSE")
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if err != nil {
t.Fatal(err)
}
err = os.MkdirAll("s1", 0755)
if err != nil {
t.Fatal(err)
}
err = generateOneFile(fd, "s1/onefile", 1<<uint(sizeExp), time.Now())
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} else {
err = generateFiles("s1", files, sizeExp, "../LICENSE")
}
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if err != nil {
t.Fatal(err)
}
benchmarkTransfer(t)
}
// TestBenchmarkTransferSameFiles doesn't actually transfer anything, but tests
// how fast two devicees get in sync if they have the same data locally.
func TestBenchmarkTransferSameFiles(t *testing.T) {
cleanBenchmarkTransfer(t)
t0 := time.Now()
rand.Seed(0)
log.Println("Generating files in s1...")
if err := generateFilesWithTime("s1", 10000, 10, "../LICENSE", t0); err != nil {
t.Fatal(err)
}
rand.Seed(0)
log.Println("Generating same files in s2...")
if err := generateFilesWithTime("s2", 10000, 10, "../LICENSE", t0); err != nil {
t.Fatal(err)
}
benchmarkTransfer(t)
}
func benchmarkTransfer(t *testing.T) {
expected, err := directoryContents("s1")
if err != nil {
t.Fatal(err)
}
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var total int64
var nfiles int
for _, f := range expected {
total += f.size
if f.mode.IsRegular() {
nfiles++
}
}
log.Printf("Total %.01f MiB in %d files", float64(total)/1024/1024, nfiles)
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sender := startInstance(t, 1)
defer checkedStop(t, sender)
receiver := startInstance(t, 2)
defer checkedStop(t, receiver)
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sender.ResumeAll()
receiver.ResumeAll()
t0 := time.Now()
var t1 time.Time
lastEvent := 0
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loop:
for {
evs, err := receiver.Events(lastEvent)
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if err != nil {
if isTimeout(err) {
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continue
}
t.Fatal(err)
}
for _, ev := range evs {
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lastEvent = ev.ID
switch ev.Type {
case "ItemFinished":
break loop
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}
}
time.Sleep(250 * time.Millisecond)
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}
processes := []*rc.Process{sender, receiver}
for {
if rc.InSync("default", processes...) {
t1 = time.Now()
break
}
time.Sleep(250 * time.Millisecond)
}
sendProc, err := sender.Stop()
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if err != nil {
t.Fatal(err)
}
recvProc, err := receiver.Stop()
if err != nil {
t.Fatal(err)
}
log.Println("Verifying...")
actual, err := directoryContents("s2")
if err != nil {
t.Fatal(err)
}
err = compareDirectoryContents(actual, expected)
if err != nil {
t.Fatal(err)
}
log.Printf("Result: Wall time: %v / MiB", t1.Sub(t0)/time.Duration(total/1024/1024))
log.Printf("Result: %.3g KiB/s synced", float64(total)/1024/t1.Sub(t0).Seconds())
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printUsage("Receiver", recvProc, total)
printUsage("Sender", sendProc, total)
cleanBenchmarkTransfer(t)
}
func cleanBenchmarkTransfer(t *testing.T) {
log.Println("Cleaning...")
err := removeAll("s1", "s2", "h1/index*", "h2/index*")
if err != nil {
t.Fatal(err)
}
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}