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Improve the accuracy of CPU detection on FreeBSD.

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This commit is contained in:
Sean Chittenden 2016-06-16 19:25:27 -07:00
parent d2ca7e8d2c
commit 606680edc5
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GPG Key ID: 4EBC9DC16C2E5E16
1 changed files with 32 additions and 23 deletions
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55
cpu/cpu_freebsd.go
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@ -97,29 +97,46 @@ func Times(percpu bool) ([]TimesStat, error) {
return ret, nil
}
// Returns only one CPUInfoStat on FreeBSD
// Returns only one InfoStat on FreeBSD. The information regarding core
// count, however is accurate and it is assumed that all InfoStat attributes
// are the same across CPUs.
func Info() ([]InfoStat, error) {
filename := "/var/run/dmesg.boot"
lines, _ := common.ReadLines(filename)
var ret []InfoStat
const dmesgBoot = "/var/run/dmesg.boot"
lines, _ := common.ReadLines(dmesgBoot)
c := InfoStat{}
var vals []string
var err error
if vals, err = common.DoSysctrl("hw.clockrate"); err != nil {
return nil, err
}
if c.Mhz, err = strconv.ParseFloat(vals[0], 64); err != nil {
return nil, fmt.Errorf("Unable to parse FreeBSD CPU clock rate: %v", err)
}
c.CPU = int32(c.Mhz)
if vals, err = common.DoSysctrl("hw.ncpu"); err != nil {
return nil, err
}
var i64 int64
if i64, err = strconv.ParseInt(vals[0], 10, 32); err != nil {
return nil, fmt.Errorf("Unable to parse FreeBSD cores: %v", err)
}
c.Cores = int32(i64)
if vals, err = common.DoSysctrl("hw.model"); err != nil {
return nil, err
}
c.ModelName = vals[0]
for _, line := range lines {
if matches := regexp.MustCompile(`CPU:\s+(.+) \(([\d.]+).+\)`).FindStringSubmatch(line); matches != nil {
c.ModelName = matches[1]
t, err := strconv.ParseFloat(matches[2], 64)
if err != nil {
return ret, nil
}
c.Mhz = t
} else if matches := regexp.MustCompile(`Origin = "(.+)" Id = (.+) Family = (.+) Model = (.+) Stepping = (.+)`).FindStringSubmatch(line); matches != nil {
if matches := regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Family\s*=\s*(.+)\s+Model\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`).FindStringSubmatch(line); matches != nil {
c.VendorID = matches[1]
c.Family = matches[3]
c.Model = matches[4]
t, err := strconv.ParseInt(matches[5], 10, 32)
if err != nil {
return ret, nil
return nil, fmt.Errorf("Unable to parse FreeBSD CPU stepping information from %q: %v", line, err)
}
c.Stepping = int32(t)
} else if matches := regexp.MustCompile(`Features=.+<(.+)>`).FindStringSubmatch(line); matches != nil {
@ -130,16 +147,8 @@ func Info() ([]InfoStat, error) {
for _, v := range strings.Split(matches[1], ",") {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if matches := regexp.MustCompile(`Logical CPUs per core: (\d+)`).FindStringSubmatch(line); matches != nil {
// FIXME: no this line?
t, err := strconv.ParseInt(matches[1], 10, 32)
if err != nil {
return ret, nil
}
c.Cores = int32(t)
}
}
return append(ret, c), nil
return []InfoStat{c}, nil
}