Exemple #1
0
func detectSeriesAndHardwareCharacteristics(host string) (hc instance.HardwareCharacteristics, series string, err error) {
	logger.Infof("Detecting series and characteristics on %s", host)
	cmd := ssh.Command("ubuntu@"+host, []string{"/bin/bash"}, nil)
	var stdout, stderr bytes.Buffer
	cmd.Stdout = &stdout
	cmd.Stderr = &stderr
	cmd.Stdin = bytes.NewBufferString(detectionScript)
	if err := cmd.Run(); err != nil {
		if stderr.Len() != 0 {
			err = fmt.Errorf("%v (%v)", err, strings.TrimSpace(stderr.String()))
		}
		return hc, "", err
	}
	lines := strings.Split(stdout.String(), "\n")
	series = strings.TrimSpace(lines[0])

	arch := arch.NormaliseArch(lines[1])
	hc.Arch = &arch

	// HardwareCharacteristics wants memory in megabytes,
	// meminfo reports it in kilobytes.
	memkB := strings.Fields(lines[2])[1] // "MemTotal: NNN kB"
	hc.Mem = new(uint64)
	*hc.Mem, err = strconv.ParseUint(memkB, 10, 0)
	*hc.Mem /= 1024

	// For each "physical id", count the number of cores.
	// This way we only count physical cores, not additional
	// logical cores due to hyperthreading.
	recorded := make(map[string]bool)
	var physicalId string
	hc.CpuCores = new(uint64)
	for _, line := range lines[3:] {
		if strings.HasPrefix(line, "physical id") {
			physicalId = strings.TrimSpace(strings.SplitN(line, ":", 2)[1])
		} else if strings.HasPrefix(line, "cpu cores") {
			var cores uint64
			value := strings.TrimSpace(strings.SplitN(line, ":", 2)[1])
			if cores, err = strconv.ParseUint(value, 10, 0); err != nil {
				return hc, "", err
			}
			if !recorded[physicalId] {
				*hc.CpuCores += cores
				recorded[physicalId] = true
			}
		}
	}
	if *hc.CpuCores == 0 {
		// In the case of a single-core, non-HT CPU, we'll see no
		// "physical id" or "cpu cores" lines.
		*hc.CpuCores = 1
	}

	// TODO(axw) calculate CpuPower. What algorithm do we use?
	logger.Infof("series: %s, characteristics: %s", series, hc)
	return hc, series, nil
}
Exemple #2
0
func (s *archSuite) TestNormaliseArch(c *gc.C) {
	for _, test := range []struct {
		raw  string
		arch string
	}{
		{"windows", "windows"},
		{"amd64", "amd64"},
		{"x86_64", "amd64"},
		{"386", "i386"},
		{"i386", "i386"},
		{"i486", "i386"},
		{"arm", "armhf"},
		{"armv", "armhf"},
		{"armv7", "armhf"},
		{"aarch64", "arm64"},
		{"arm64", "arm64"},
		{"ppc64el", "ppc64"},
		{"ppc64le", "ppc64"},
	} {
		arch := arch.NormaliseArch(test.raw)
		c.Check(arch, gc.Equals, test.arch)
	}
}
Exemple #3
0
// SkipIfI386 skips the test if the arch is I386.
func SkipIfI386(c *gc.C, bugID string) {
	if arch.NormaliseArch(runtime.GOARCH) == arch.I386 {
		c.Skip(fmt.Sprintf("Test disabled on I386 until fixed - see bug %s", bugID))
	}
}
Exemple #4
0
// SkipIfPPC64EL skips the test if the arch is PPC64EL and the
// compiler is gccgo.
func SkipIfPPC64EL(c *gc.C, bugID string) {
	if runtime.Compiler == "gccgo" &&
		arch.NormaliseArch(runtime.GOARCH) == arch.PPC64EL {
		c.Skip(fmt.Sprintf("Test disabled on PPC64EL until fixed - see bug %s", bugID))
	}
}