mirror of
https://github.com/ClusterCockpit/cc-metric-collector.git
synced 2024-12-25 15:09:05 +01:00
Fixed topology detection
This commit is contained in:
Holger Obermaier
parent
f0a62152fd
commit
9157fdbab2
@ -32,10 +32,19 @@ func readOneLine(filename string) (text string, ok bool) {
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return
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}
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type CPUFreqCollectorCPU struct {
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// coreID, packageID, num_cores, num_package
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tagSet map[string]string
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type CPUFreqCollectorTopology struct {
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processor string // logical processor number (continuous, starting at 0)
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coreID string // socket local core ID
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coreID_int int
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physicalID string // socket / package ID
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physicalID_int int
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numPhysicalID string // number of sockets / packages
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numPhysicalID_int int
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isHT bool
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numNonHT string // number of non hyperthreading processors
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numNonHT_int int
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scalingCurFreqFile string
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tagSet map[string]string
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}
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//
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@ -48,10 +57,10 @@ type CPUFreqCollectorCPU struct {
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//
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type CPUFreqCollector struct {
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MetricCollector
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config struct {
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topology []CPUFreqCollectorTopology
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config struct {
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ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
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}
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cpus []CPUFreqCollectorCPU
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}
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func (m *CPUFreqCollector) Init(config []byte) error {
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@ -64,9 +73,6 @@ func (m *CPUFreqCollector) Init(config []byte) error {
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}
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}
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// Initialize CPU list
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m.cpus = make([]CPUFreqCollectorCPU, 0)
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// Loop for all CPU directories
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baseDir := "/sys/devices/system/cpu"
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globPattern := filepath.Join(baseDir, "cpu[0-9]*")
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@ -78,82 +84,98 @@ func (m *CPUFreqCollector) Init(config []byte) error {
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return fmt.Errorf("CPUFreqCollector.Init() unable to find any files with pattern %s", globPattern)
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}
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maxPackageID := 0
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maxCoreID := 0
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// Initialize CPU topology
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m.topology = make([]CPUFreqCollectorTopology, len(cpuDirs))
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for _, cpuDir := range cpuDirs {
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cpuID := strings.TrimPrefix(cpuDir, "/sys/devices/system/cpu/cpu")
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processor := strings.TrimPrefix(cpuDir, "/sys/devices/system/cpu/cpu")
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processor_int, err := strconv.Atoi(processor)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to convert cpuID to int: %v", err)
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}
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// Read thread sibling list
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threadSiblingListFile := filepath.Join(cpuDir, "topology", "thread_siblings_list")
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threadSiblingList, ok := readOneLine(threadSiblingListFile)
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// Read package ID
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packageIDFile := filepath.Join(cpuDir, "topology", "physical_package_id")
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packageID, ok := readOneLine(packageIDFile)
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if !ok {
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return fmt.Errorf("CPUFreqCollector.Init() unable to read thread siblings list from %s", threadSiblingListFile)
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return fmt.Errorf("CPUFreqCollector.Init() unable to read physical package ID from %s", packageIDFile)
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}
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packageID_int, err := strconv.Atoi(packageID)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to convert packageID to int: %v", err)
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}
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// Read frequency only from first hardware thread
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// Ignore Simultaneous Multithreading (SMT) / Hyper-Threading
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if strings.Split(threadSiblingList, ",")[0] == cpuID {
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// Read package ID
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packageIDFile := filepath.Join(cpuDir, "topology", "physical_package_id")
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packageID, ok := readOneLine(packageIDFile)
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if !ok {
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return fmt.Errorf("CPUFreqCollector.Init() unable to read physical package ID from %s", packageIDFile)
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}
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packageID_int, err := strconv.Atoi(packageID)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to convert packageID to int: %v", err)
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}
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// Read core ID
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coreIDFile := filepath.Join(cpuDir, "topology", "core_id")
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coreID, ok := readOneLine(coreIDFile)
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if !ok {
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return fmt.Errorf("CPUFreqCollector.Init() unable to read core ID from %s", coreIDFile)
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}
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coreID_int, err := strconv.Atoi(coreID)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to convert coreID to int: %v", err)
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}
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// Update maxPackageID
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if packageID_int > maxPackageID {
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maxPackageID = packageID_int
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}
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// Check access to current frequency file
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scalingCurFreqFile := filepath.Join(cpuDir, "cpufreq", "scaling_cur_freq")
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err = unix.Access(scalingCurFreqFile, unix.R_OK)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to access %s: %v", scalingCurFreqFile, err)
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}
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// Read core ID
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coreIDFile := filepath.Join(cpuDir, "topology", "core_id")
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coreID, ok := readOneLine(coreIDFile)
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if !ok {
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return fmt.Errorf("CPUFreqCollector.Init() unable to read core ID from %s", coreIDFile)
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}
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coreID_int, err := strconv.Atoi(coreID)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to convert coreID to int: %v", err)
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}
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t := &m.topology[processor_int]
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t.processor = processor
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t.physicalID = packageID
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t.physicalID_int = packageID_int
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t.coreID = coreID
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t.coreID_int = coreID_int
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t.scalingCurFreqFile = scalingCurFreqFile
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}
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// Update maxCoreID
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if coreID_int > maxCoreID {
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maxCoreID = coreID_int
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}
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// is processor a hyperthread?
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coreSeenBefore := make(map[string]bool)
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for i := range m.topology {
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t := &m.topology[i]
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// Check access to current frequency file
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scalingCurFreqFile := filepath.Join(cpuDir, "cpufreq", "scaling_cur_freq")
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err = unix.Access(scalingCurFreqFile, unix.R_OK)
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if err != nil {
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return fmt.Errorf("CPUFreqCollector.Init() unable to access %s: %v", scalingCurFreqFile, err)
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}
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globalID := t.physicalID + ":" + t.coreID
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t.isHT = coreSeenBefore[globalID]
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coreSeenBefore[globalID] = true
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}
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m.cpus = append(
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m.cpus,
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CPUFreqCollectorCPU{
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tagSet: map[string]string{
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"type": "cpu",
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"type-id": strings.TrimSpace(coreID),
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"packageID": strings.TrimSpace(packageID),
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},
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scalingCurFreqFile: scalingCurFreqFile,
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})
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// number of non hyper thread cores and packages / sockets
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numNonHT_int := 0
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maxPhysicalID := 0
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for i := range m.topology {
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t := &m.topology[i]
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// Update maxPackageID
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if t.physicalID_int > maxPhysicalID {
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maxPhysicalID = t.physicalID_int
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}
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if !t.isHT {
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numNonHT_int++
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}
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}
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// Add num packages and num cores as tags
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numPackages := strconv.Itoa(maxPackageID + 1)
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numCores := strconv.Itoa(maxCoreID + 1)
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for i := range m.cpus {
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c := &m.cpus[i]
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c.tagSet["num_core"] = numCores
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c.tagSet["num_package"] = numPackages
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numPhysicalID_int := maxPhysicalID + 1
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numPhysicalID := fmt.Sprint(numPhysicalID_int)
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numNonHT := fmt.Sprint(numNonHT_int)
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for i := range m.topology {
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t := &m.topology[i]
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t.numPhysicalID = numPhysicalID
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t.numPhysicalID_int = numPhysicalID_int
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t.numNonHT = numNonHT
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t.numNonHT_int = numNonHT_int
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t.tagSet = map[string]string{
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"type": "cpu",
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"type-id": t.processor,
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"num_core": t.numNonHT,
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"package_id": t.physicalID,
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"num_package": t.numPhysicalID,
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}
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}
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fmt.Printf("%+v\n", m.topology)
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m.init = true
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return nil
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}
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@ -164,13 +186,18 @@ func (m *CPUFreqCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
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}
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now := time.Now()
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for i := range m.cpus {
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cpu := &m.cpus[i]
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for i := range m.topology {
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t := &m.topology[i]
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// skip hyperthreads
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if t.isHT {
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continue
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}
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// Read current frequency
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line, ok := readOneLine(cpu.scalingCurFreqFile)
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line, ok := readOneLine(t.scalingCurFreqFile)
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if !ok {
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log.Printf("CPUFreqCollector.Read(): Failed to read one line from file '%s'", cpu.scalingCurFreqFile)
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log.Printf("CPUFreqCollector.Read(): Failed to read one line from file '%s'", t.scalingCurFreqFile)
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continue
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}
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cpuFreq, err := strconv.Atoi(line)
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@ -179,7 +206,7 @@ func (m *CPUFreqCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
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continue
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}
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y, err := lp.New("cpufreq", cpu.tagSet, map[string]interface{}{"value": cpuFreq}, now)
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y, err := lp.New("cpufreq", t.tagSet, map[string]interface{}{"value": cpuFreq}, now)
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if err == nil {
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*out = append(*out, y)
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}
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