Beispiel #1
0
// Tests TranslateCPUProfile parses correct sampling period in an otherwise empty cpu profile.
func TestTranlateCPUProfileSamplingPeriod(t *testing.T) {
	// A test server with mock cpu profile data.
	var buf bytes.Buffer

	startTime := time.Now()
	b := createEmptyProfileWithPeriod(t, 2000)
	p, err := TranslateCPUProfile(b.Bytes(), startTime)
	if err != nil {
		t.Fatalf("translate failed: %v", err)
	}
	if err := p.Write(&buf); err != nil {
		t.Fatalf("write failed: %v", err)
	}

	p, err = profile.Parse(&buf)
	if err != nil {
		t.Fatalf("Could not parse Profile profile: %v", err)
	}

	// Expected PeriodType and SampleType.
	expectedPeriodType := &profile.ValueType{Type: "cpu", Unit: "nanoseconds"}
	expectedSampleType := []*profile.ValueType{
		{Type: "samples", Unit: "count"},
		{Type: "cpu", Unit: "nanoseconds"},
	}
	if p.Period != 2000*1000 || !reflect.DeepEqual(p.PeriodType, expectedPeriodType) ||
		!reflect.DeepEqual(p.SampleType, expectedSampleType) || p.Sample != nil {
		t.Fatalf("Unexpected Profile fields")
	}
}
Beispiel #2
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func parseProfile(t *testing.T, valBytes []byte, f func(uintptr, []uintptr)) {
	p, err := profile.Parse(bytes.NewReader(valBytes))
	if err != nil {
		t.Fatal(err)
	}
	for _, sample := range p.Sample {
		count := uintptr(sample.Value[0])
		stk := make([]uintptr, len(sample.Location))
		for i := range sample.Location {
			stk[i] = uintptr(sample.Location[i].Address)
		}
		f(count, stk)
	}
}
Beispiel #3
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func TestGoroutineCounts(t *testing.T) {
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15156)
	}
	c := make(chan int)
	for i := 0; i < 100; i++ {
		if i%10 == 0 {
			go func1(c)
			continue
		}
		if i%2 == 0 {
			go func2(c)
			continue
		}
		go func3(c)
	}
	time.Sleep(10 * time.Millisecond) // let goroutines block on channel

	var w bytes.Buffer
	goroutineProf := Lookup("goroutine")

	// Check debug profile
	goroutineProf.WriteTo(&w, 1)
	prof := w.String()

	if !containsInOrder(prof, "\n50 @ ", "\n40 @", "\n10 @", "\n1 @") {
		t.Errorf("expected sorted goroutine counts:\n%s", prof)
	}

	// Check proto profile
	w.Reset()
	goroutineProf.WriteTo(&w, 0)
	p, err := profile.Parse(&w)
	if err != nil {
		t.Errorf("error parsing protobuf profile: %v", err)
	}
	if err := p.CheckValid(); err != nil {
		t.Errorf("protobuf profile is invalid: %v", err)
	}
	if !containsCounts(p, []int64{50, 40, 10, 1}) {
		t.Errorf("expected count profile to contain goroutines with counts %v, got %v",
			[]int64{50, 40, 10, 1}, p)
	}

	close(c)

	time.Sleep(10 * time.Millisecond) // let goroutines exit
}
Beispiel #4
0
// Fetcher is the plugin.Fetcher version of FetchProfile.
func Fetcher(source string, timeout time.Duration, ui plugin.UI) (*profile.Profile, error) {
	var f io.ReadCloser
	var err error

	url, err := url.Parse(source)
	if err == nil && url.Host != "" {
		f, err = FetchURL(source, timeout)
	} else {
		f, err = os.Open(source)
	}
	if err != nil {
		return nil, err
	}
	defer f.Close()
	return profile.Parse(f)
}
Beispiel #5
0
// TestSampledHeapAllocProfile tests encoding of a memory profile from
// runtime.MemProfileRecord data.
func TestSampledHeapAllocProfile(t *testing.T) {
	if runtime.GOOS != "linux" {
		t.Skip("Test requires a system with /proc/self/maps")
	}

	// Figure out two addresses from /proc/self/maps.
	mmap, err := ioutil.ReadFile("/proc/self/maps")
	if err != nil {
		t.Fatal("Cannot read /proc/self/maps")
	}
	rd := bytes.NewReader(mmap)
	mprof := &profile.Profile{}
	if err = mprof.ParseMemoryMap(rd); err != nil {
		t.Fatalf("Cannot parse /proc/self/maps")
	}
	if len(mprof.Mapping) < 2 {
		// It is possible for a binary to only have 1 executable
		// region of memory.
		t.Skipf("need 2 or more mappings, got %v", len(mprof.Mapping))
	}
	address1 := mprof.Mapping[0].Start
	address2 := mprof.Mapping[1].Start

	var buf bytes.Buffer

	rec, rate := testMemRecords(address1, address2)
	p := EncodeMemProfile(rec, rate, time.Now())
	if err := p.Write(&buf); err != nil {
		t.Fatalf("Failed to write profile: %v", err)
	}

	p, err = profile.Parse(&buf)
	if err != nil {
		t.Fatalf("Could not parse Profile profile: %v", err)
	}

	// Expected PeriodType, SampleType and Sample.
	expectedPeriodType := &profile.ValueType{Type: "space", Unit: "bytes"}
	expectedSampleType := []*profile.ValueType{
		{Type: "alloc_objects", Unit: "count"},
		{Type: "alloc_space", Unit: "bytes"},
		{Type: "inuse_objects", Unit: "count"},
		{Type: "inuse_space", Unit: "bytes"},
	}
	// Expected samples, with values unsampled according to the profiling rate.
	expectedSample := []*profile.Sample{
		{Value: []int64{2050, 2099200, 1537, 1574400}, Location: []*profile.Location{
			{ID: 1, Mapping: mprof.Mapping[0], Address: address1},
			{ID: 2, Mapping: mprof.Mapping[1], Address: address2},
		}},
		{Value: []int64{1, 829411, 1, 829411}, Location: []*profile.Location{
			{ID: 3, Mapping: mprof.Mapping[1], Address: address2 + 1},
			{ID: 4, Mapping: mprof.Mapping[1], Address: address2 + 2},
		}},
		{Value: []int64{1, 829411, 0, 0}, Location: []*profile.Location{
			{ID: 5, Mapping: mprof.Mapping[0], Address: address1 + 1},
			{ID: 6, Mapping: mprof.Mapping[0], Address: address1 + 2},
			{ID: 7, Mapping: mprof.Mapping[1], Address: address2 + 3},
		}},
	}

	if p.Period != 512*1024 {
		t.Fatalf("Sampling periods do not match")
	}
	if !reflect.DeepEqual(p.PeriodType, expectedPeriodType) {
		t.Fatalf("Period types do not match")
	}
	if !reflect.DeepEqual(p.SampleType, expectedSampleType) {
		t.Fatalf("Sample types do not match")
	}
	if !reflect.DeepEqual(p.Sample, expectedSample) {
		t.Fatalf("Samples do not match: Expected: %v, Got:%v", getSampleAsString(expectedSample),
			getSampleAsString(p.Sample))
	}
}