Collector-specific configuration. LIKWID collector derives metrics itself, Run once CLI option

collectors/cpustatMetric.go

@@ -7,24 +7,40 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
 )
 
 const CPUSTATFILE = `/proc/stat`
 
-type CpustatCollector struct {
-	MetricCollector
+type CpustatCollectorConfig struct {
+    ExcludeMetrics []string                 `json:"exclude_metrics, omitempty"`
 }
 
-func (m *CpustatCollector) Init() error {
+type CpustatCollector struct {
+	MetricCollector
+	config CpustatCollectorConfig
+}
+
+func (m *CpustatCollector) Init(config []byte) error {
 	m.name = "CpustatCollector"
 	m.setup()
+	if len(config) > 0 {
+	    err := json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.init = true
 	return nil
 }
 
-func ParseStatLine(line string, cpu int, out *[]lp.MutableMetric) {
+
+func ParseStatLine(line string, cpu int, exclude []string, out *[]lp.MutableMetric) {
 	ls := strings.Fields(line)
 	matches := []string{"", "cpu_user", "cpu_nice", "cpu_system", "cpu_idle", "cpu_iowait", "cpu_irq", "cpu_softirq", "cpu_steal", "cpu_guest", "cpu_guest_nice"}
+    for _, ex := range exclude {
+        matches, _ = RemoveFromStringList(matches, ex)
+    }
 
 	var tags map[string]string
 	if cpu < 0 {
@@ -46,6 +62,9 @@ func ParseStatLine(line string, cpu int, out *[]lp.MutableMetric) {
 }
 
 func (m *CpustatCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
+    if (!m.init) {
+        return
+    }
 	buffer, err := ioutil.ReadFile(string(CPUSTATFILE))
 
 	if err != nil {
@@ -59,11 +78,11 @@ func (m *CpustatCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 		}
 		ls := strings.Fields(line)
 		if strings.Compare(ls[0], "cpu") == 0 {
-			ParseStatLine(line, -1, out)
+			ParseStatLine(line, -1, m.config.ExcludeMetrics, out)
 		} else if strings.HasPrefix(ls[0], "cpu") {
 			cpustr := strings.TrimLeft(ls[0], "cpu")
 			cpu, _ := strconv.Atoi(cpustr)
-			ParseStatLine(line, cpu, out)
+			ParseStatLine(line, cpu, m.config.ExcludeMetrics, out)
 		}
 	}
 }

collectors/customCmdMetric.go

@@ -1,25 +1,65 @@
 package collectors
 
 import (
-	"fmt"
+	"errors"
 	lp "github.com/influxdata/line-protocol"
 	"io/ioutil"
 	"log"
 	"os/exec"
 	"time"
+	"encoding/json"
+	"strings"
 )
 
 const CUSTOMCMDPATH = `/home/unrz139/Work/cc-metric-collector/collectors/custom`
 
+type CustomCmdCollectorConfig struct {
+    commands []string `json:"commands"`
+    files []string `json:"files"`
+    ExcludeMetrics []string                 `json:"exclude_metrics"`
+}
+
 type CustomCmdCollector struct {
 	MetricCollector
 	handler *lp.MetricHandler
 	parser  *lp.Parser
+	config CustomCmdCollectorConfig
+	commands []string
+	files []string
 }
 
-func (m *CustomCmdCollector) Init() error {
+func (m *CustomCmdCollector) Init(config []byte) error {
+    var err error
 	m.name = "CustomCmdCollector"
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        log.Print(err.Error())
+	        return err
+	    }
+	}
 	m.setup()
+	for _, c := range m.config.commands {
+	    cmdfields := strings.Fields(c)
+	    command := exec.Command(cmdfields[0], strings.Join(cmdfields[1:], " "))
+	    command.Wait()
+	    _, err = command.Output()
+	    if err != nil {
+            m.commands = append(m.commands, c)
+        }
+	}
+	for _, f := range m.config.files {
+	    _, err = ioutil.ReadFile(f)
+	    if err == nil {
+	        m.files = append(m.files, f)
+	    } else {
+	        log.Print(err.Error())
+	        continue
+	    }
+	}
+	if len(m.files) == 0 && len(m.commands) == 0 {
+		return errors.New("No metrics to collect")
+	}
 	m.handler = lp.NewMetricHandler()
 	m.parser = lp.NewParser(m.handler)
 	m.parser.SetTimeFunc(DefaultTime)
@@ -32,73 +72,55 @@ var DefaultTime = func() time.Time {
 }
 
 func (m *CustomCmdCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-	files, err := ioutil.ReadDir(string(CUSTOMCMDPATH))
-	if err != nil {
-		log.Print(err)
-		return
-	}
-	for _, file := range files {
-		//		stat, err := os.Stat(file)
-		//		if err != nil {
-		//			log.Print(err)
-		//			continue
-		//		}
-		//		mode := stat.Mode()
-		//		if mode & 0o555 {
-		path := fmt.Sprintf("%s/%s", string(CUSTOMCMDPATH), file.Name())
-		command := exec.Command(path, "")
+    if !m.init {
+        return
+    }
+	for _, cmd := range m.commands {
+		cmdfields := strings.Fields(cmd)
+		command := exec.Command(cmdfields[0], strings.Join(cmdfields[1:], " "))
 		command.Wait()
 		stdout, err := command.Output()
 		if err != nil {
 			log.Print(err)
 			continue
 		}
-		metrics, err := m.parser.Parse(stdout)
+		cmdmetrics, err := m.parser.Parse(stdout)
 		if err != nil {
 			log.Print(err)
 			continue
 		}
-		for _, m := range metrics {
-			y, err := lp.New(m.Name(), Tags2Map(m), Fields2Map(m), m.Time())
-			if err == nil {
-				*out = append(*out, y)
-			}
-			//				switch m.Name() {
-			//				case "node":
-			//					for k, v := range m.FieldList() {
-			//						m.node[k] = float64(v)
-			//					}
-			//				case "socket":
-			//					tlist := m.TagList()
-			//					if id, found := tlist["socket"]; found {
-			//						for k, v := range m.FieldList() {
-			//							m.socket[id][k] = float64(v)
-			//						}
-			//					}
-			//				case "cpu":
-			//					tlist := m.TagList()
-			//					if id, found := tlist["cpu"]; found {
-			//						for k, v := range m.FieldList() {
-			//							m.cpu[id][k] = float64(v)
-			//						}
-			//					}
-			//				case "network":
-			//					tlist := m.TagList()
-			//					if id, found := tlist["device"]; found {
-			//						for k, v := range m.FieldList() {
-			//							m.network[id][k] = float64(v)
-			//						}
-			//					}
-			//				case "accelerator":
-			//					tlist := m.TagList()
-			//					if id, found := tlist["device"]; found {
-			//						for k, v := range m.FieldList() {
-			//							m.accelerator[id][k] = float64(v)
-			//						}
-			//					}
-			//				}
+        for _, c := range cmdmetrics {
+            _, skip := stringArrayContains(m.config.ExcludeMetrics, c.Name())
+            if skip {
+                continue
+            }
+            y, err := lp.New(c.Name(), Tags2Map(c), Fields2Map(c), c.Time())
+		    if err == nil {
+			    *out = append(*out, y)
+		    }
+        }
+	}
+	for _, file := range m.files {
+	    buffer, err := ioutil.ReadFile(file)
+	    if err != nil {
+		    log.Print(err)
+		    return
+	    }
+	    fmetrics, err := m.parser.Parse(buffer)
+		if err != nil {
+			log.Print(err)
+			continue
 		}
-		//		} if file is executable check
+        for _, f := range fmetrics {
+            _, skip := stringArrayContains(m.config.ExcludeMetrics, f.Name())
+            if skip {
+                continue
+            }
+            y, err := lp.New(f.Name(), Tags2Map(f), Fields2Map(f), f.Time())
+		    if err == nil {
+			    *out = append(*out, y)
+		    }
+        }
 	}
 }
 

collectors/diskstatMetric.go

@@ -1,28 +1,42 @@
 package collectors
 
 import (
-	//	"errors"
-	//	"fmt"
 	lp "github.com/influxdata/line-protocol"
 	"io/ioutil"
-	"log"
+//	"log"
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
+	"errors"
 )
 
 const DISKSTATFILE = `/proc/diskstats`
+const DISKSTAT_SYSFSPATH = `/sys/block`
+
+type DiskstatCollectorConfig struct {
+    ExcludeMetrics []string                 `json:"exclude_metrics, omitempty"`
+}
 
 type DiskstatCollector struct {
 	MetricCollector
 	matches map[int]string
+	config DiskstatCollectorConfig
 }
 
-func (m *DiskstatCollector) Init() error {
+
+func (m *DiskstatCollector) Init(config []byte) error {
+    var err error
 	m.name = "DiskstatCollector"
 	m.setup()
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	// https://www.kernel.org/doc/html/latest/admin-guide/iostats.html
-	m.matches = map[int]string{
+	matches := map[int]string{
 		3:  "reads",
 		4:  "reads_merged",
 		5:  "read_sectors",
@@ -41,46 +55,60 @@ func (m *DiskstatCollector) Init() error {
 		18: "flushes",
 		19: "flushes_ms",
 	}
-	_, err := ioutil.ReadFile(string(DISKSTATFILE))
-	if err == nil {
-		m.init = true
+	m.matches = make(map[int]string)
+	for k, v := range matches {
+	    _, skip := stringArrayContains(m.config.ExcludeMetrics, v)
+	    if (!skip) {
+	        m.matches[k] = v
+	    }
 	}
+	if len(m.matches) == 0 {
+	    return errors.New("No metrics to collect")
+	}
+	_, err = ioutil.ReadFile(string(DISKSTATFILE))
+    if err == nil {
+	    m.init = true
+    }
 	return err
 }
 
+
 func (m *DiskstatCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
+    var lines []string
+    if !m.init {
+        return
+    }
 
-	buffer, err := ioutil.ReadFile(string(DISKSTATFILE))
+    buffer, err := ioutil.ReadFile(string(DISKSTATFILE))
+    if err != nil {
+        return
+    }
+    lines = strings.Split(string(buffer), "\n")
 
-	if err != nil {
-		log.Print(err)
-		return
-	}
-
-	ll := strings.Split(string(buffer), "\n")
-
-	for _, line := range ll {
-		if len(line) == 0 {
-			continue
-		}
-		f := strings.Fields(line)
-		if strings.Contains(f[2], "loop") {
-			continue
-		}
-		tags := map[string]string{
-			"device": f[2],
-			"type":   "node",
-		}
-		for idx, name := range m.matches {
-			x, err := strconv.ParseInt(f[idx], 0, 64)
-			if err == nil {
-				y, err := lp.New(name, tags, map[string]interface{}{"value": int(x)}, time.Now())
-				if err == nil {
-					*out = append(*out, y)
-				}
-			}
-		}
-	}
+    for _, line := range lines {
+	    if len(line) == 0 {
+		    continue
+	    }
+	    f := strings.Fields(line)
+	    if strings.Contains(f[2], "loop") {
+		    continue
+	    }
+	    tags := map[string]string{
+		    "device": f[2],
+		    "type":   "node",
+	    }
+	    for idx, name := range m.matches {
+	        if idx < len(f) {
+		        x, err := strconv.ParseInt(f[idx], 0, 64)
+		        if err == nil {
+			        y, err := lp.New(name, tags, map[string]interface{}{"value": int(x)}, time.Now())
+			        if err == nil {
+				        *out = append(*out, y)
+			        }
+		        }
+		    }
+	    }
+    }
 	return
 }
 

collectors/infinibandMetric.go

@@ -6,59 +6,104 @@ import (
 	"io/ioutil"
 	"log"
 	"os/exec"
+//	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
+	"errors"
 )
 
+const BASEPATH = `/sys/class/infiniband/`
 const LIDFILE = `/sys/class/infiniband/mlx4_0/ports/1/lid`
 const PERFQUERY = `/usr/sbin/perfquery`
 
+type InfinibandCollectorConfig struct {
+    ExcludeDevices []string                 `json:"exclude_devices, omitempty"`
+}
+
 type InfinibandCollector struct {
 	MetricCollector
 	tags map[string]string
+	lids map[string]map[string]string
+	config NetstatCollectorConfig
+	use_perfquery bool
 }
 
-func (m *InfinibandCollector) Init() error {
+func (m *InfinibandCollector) Init(config []byte) error {
+    var err error
 	m.name = "InfinibandCollector"
+	m.use_perfquery = false
 	m.setup()
 	m.tags = map[string]string{"type": "node"}
-	_, err := ioutil.ReadFile(string(LIDFILE))
-	if err == nil {
-		_, err = ioutil.ReadFile(string(PERFQUERY))
-		if err == nil {
-			m.init = true
-		}
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
 	}
+	m.lids = make(map[string]map[string]string)
+	p := fmt.Sprintf("%s/*/ports/*/lid", string(BASEPATH))
+    files, err := filepath.Glob(p)
+	for _, f := range(files) {
+	    lid, err := ioutil.ReadFile(f)
+	    if err == nil {
+	        plist := strings.Split(strings.Replace(f, string(BASEPATH), "", -1), "/")
+	        skip := false
+	        for _, d := range m.config.ExcludeDevices {
+	            if d == plist[0] {
+	                skip = true
+	            }
+	        }
+	        if !skip {
+	            m.lids[plist[0]] = make(map[string]string)
+	            m.lids[plist[0]][plist[2]] = string(lid)
+	        }
+	    }
+	}
+	
+	for _, ports := range m.lids {
+	    for port, lid := range ports {
+	        args := fmt.Sprintf("-r %s %s 0xf000", lid, port)
+	        command := exec.Command(PERFQUERY, args)
+	        command.Wait()
+	        _, err := command.Output()
+	        if (err == nil) {
+	            m.use_perfquery = true
+	        }
+	        break
+	    }
+	    break
+	}
+
+	if len(m.lids) > 0 {
+	    m.init = true
+	} else {
+	    err = errors.New("No usable devices")
+	}
+
 	return err
 }
 
-func (m *InfinibandCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-	buffer, err := ioutil.ReadFile(string(LIDFILE))
+func DoPerfQuery(dev string, lid string, port string, tags map[string]string, out *[]lp.MutableMetric) error {
 
-	if err != nil {
-		log.Print(err)
-		return
-	}
-
-	args := fmt.Sprintf("-r %s 1 0xf000", string(buffer))
-
-	command := exec.Command(PERFQUERY, args)
-	command.Wait()
-	stdout, err := command.Output()
-	if err != nil {
-		log.Print(err)
-		return
-	}
-
-	ll := strings.Split(string(stdout), "\n")
+    args := fmt.Sprintf("-r %s %s 0xf000", lid, port)
+    command := exec.Command(PERFQUERY, args)
+    command.Wait()
+    stdout, err := command.Output()
+    if err != nil {
+        log.Print(err)
+        return err
+    }
+    ll := strings.Split(string(stdout), "\n")
 
 	for _, line := range ll {
 		if strings.HasPrefix(line, "PortRcvData") || strings.HasPrefix(line, "RcvData") {
 			lv := strings.Fields(line)
 			v, err := strconv.ParseFloat(lv[1], 64)
 			if err == nil {
-				y, err := lp.New("ib_recv", m.tags, map[string]interface{}{"value": float64(v)}, time.Now())
+				y, err := lp.New("ib_recv", tags, map[string]interface{}{"value": float64(v)}, time.Now())
 				if err == nil {
 					*out = append(*out, y)
 				}
@@ -68,13 +113,100 @@ func (m *InfinibandCollector) Read(interval time.Duration, out *[]lp.MutableMetr
 			lv := strings.Fields(line)
 			v, err := strconv.ParseFloat(lv[1], 64)
 			if err == nil {
-				y, err := lp.New("ib_xmit", m.tags, map[string]interface{}{"value": float64(v)}, time.Now())
+				y, err := lp.New("ib_xmit", tags, map[string]interface{}{"value": float64(v)}, time.Now())
 				if err == nil {
 					*out = append(*out, y)
 				}
 			}
 		}
 	}
+	return nil
+}
+
+func DoSysfsRead(dev string, lid string, port string, tags map[string]string, out *[]lp.MutableMetric) error {
+    path := fmt.Sprintf("%s/%s/ports/%s/counters/", string(BASEPATH), dev, port)
+    buffer, err := ioutil.ReadFile(fmt.Sprintf("%s/port_rcv_data", path))
+    if err == nil {
+        data := strings.Replace(string(buffer), "\n", "", -1)
+        v, err := strconv.ParseFloat(data, 64)
+		if err == nil {
+			y, err := lp.New("ib_recv", tags, map[string]interface{}{"value": float64(v)}, time.Now())
+			if err == nil {
+				*out = append(*out, y)
+			}
+		}
+    }
+    buffer, err = ioutil.ReadFile(fmt.Sprintf("%s/port_xmit_data", path))
+    if err == nil {
+        data := strings.Replace(string(buffer), "\n", "", -1)
+        v, err := strconv.ParseFloat(data, 64)
+		if err == nil {
+			y, err := lp.New("ib_xmit", tags, map[string]interface{}{"value": float64(v)}, time.Now())
+			if err == nil {
+				*out = append(*out, y)
+			}
+		}
+    }
+    return nil
+}
+
+func (m *InfinibandCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
+
+    if m.init {
+        for dev, ports := range m.lids {
+            for port, lid := range ports {
+                tags := map[string]string{"type" : "node", "device" : dev, "port" : port}
+                if m.use_perfquery {
+                    DoPerfQuery(dev, lid, port, tags, out)
+                } else {
+                    DoSysfsRead(dev, lid, port, tags, out)
+                }
+            }
+        }
+    }
+
+
+//	buffer, err := ioutil.ReadFile(string(LIDFILE))
+
+//	if err != nil {
+//		log.Print(err)
+//		return
+//	}
+
+//	args := fmt.Sprintf("-r %s 1 0xf000", string(buffer))
+
+//	command := exec.Command(PERFQUERY, args)
+//	command.Wait()
+//	stdout, err := command.Output()
+//	if err != nil {
+//		log.Print(err)
+//		return
+//	}
+
+//	ll := strings.Split(string(stdout), "\n")
+
+//	for _, line := range ll {
+//		if strings.HasPrefix(line, "PortRcvData") || strings.HasPrefix(line, "RcvData") {
+//			lv := strings.Fields(line)
+//			v, err := strconv.ParseFloat(lv[1], 64)
+//			if err == nil {
+//				y, err := lp.New("ib_recv", m.tags, map[string]interface{}{"value": float64(v)}, time.Now())
+//				if err == nil {
+//					*out = append(*out, y)
+//				}
+//			}
+//		}
+//		if strings.HasPrefix(line, "PortXmitData") || strings.HasPrefix(line, "XmtData") {
+//			lv := strings.Fields(line)
+//			v, err := strconv.ParseFloat(lv[1], 64)
+//			if err == nil {
+//				y, err := lp.New("ib_xmit", m.tags, map[string]interface{}{"value": float64(v)}, time.Now())
+//				if err == nil {
+//					*out = append(*out, y)
+//				}
+//			}
+//		}
+//	}
 }
 
 func (m *InfinibandCollector) Close() {

collectors/likwidMetric.go

@@ -15,15 +15,44 @@ import (
 	"log"
 	"strings"
 	"time"
+	"os"
 	"unsafe"
+	"math"
+	"encoding/json"
+	"gopkg.in/Knetic/govaluate.v2"
+	"io/ioutil"
+	"strconv"
 )
 
+type LikwidCollectorMetricConfig struct {
+    Name string `json:"name"`
+    Calc string `json:"calc"`
+    Socket_scope bool `json:"socket_scope"`
+    Publish bool `json:"publish"`
+}
+
+type LikwidCollectorEventsetConfig struct {
+    Events map[string]string `json:"events"`
+    Metrics []LikwidCollectorMetricConfig `json:"metrics"`
+}
+
+type LikwidCollectorConfig struct {
+    Eventsets []LikwidCollectorEventsetConfig `json:"eventsets"`
+    Metrics []LikwidCollectorMetricConfig `json:"globalmetrics"`
+    ExcludeMetrics []string                 `json:"exclude_metrics"`
+}
+
 type LikwidCollector struct {
 	MetricCollector
 	cpulist  []C.int
 	sock2tid map[int]int
 	metrics  map[C.int]map[string]int
-	groups   map[string]C.int
+	groups   []C.int
+	config LikwidCollectorConfig
+	results  map[int]map[int]map[string]interface{}
+	mresults map[int]map[int]map[string]float64
+	gmresults map[int]map[string]float64
+	basefreq float64
 }
 
 type LikwidMetric struct {
@@ -33,7 +62,7 @@ type LikwidMetric struct {
 	group_idx    int
 }
 
-const GROUPPATH = `/home/unrz139/Work/cc-metric-collector/collectors/likwid/groups`
+const GROUPPATH = `/apps/likwid/5.2.0/share/likwid/perfgroups`
 
 var likwid_metrics = map[string][]LikwidMetric{
 	"MEM_DP": {LikwidMetric{name: "mem_bw", search: "Memory bandwidth [MBytes/s]", socket_scope: true},
@@ -57,6 +86,33 @@ func getMetricId(group C.int, search string) (int, error) {
 	return -1, errors.New(fmt.Sprintf("Cannot find metric for search string '%s' in group %d", search, int(group)))
 }
 
+func eventsToEventStr(events map[string]string) string {
+    elist := make([]string, 0)
+    for k, v := range events {
+        elist = append(elist, fmt.Sprintf("%s:%s", v, k))
+    }
+    return strings.Join(elist, ",")
+}
+
+func getBaseFreq() float64 {
+    var freq float64 = math.NaN()
+    C.power_init(0)
+    info := C.get_powerInfo()
+    if float64(info.baseFrequency) != 0 {
+        freq = float64(info.baseFrequency)
+    } else {
+        buffer, err := ioutil.ReadFile("/sys/devices/system/cpu/cpu0/cpufreq/bios_limit")
+        if err == nil {
+            data := strings.Replace(string(buffer), "\n", "", -1)
+            x, err := strconv.ParseInt(data, 0, 64)
+            if err == nil {
+                freq = float64(x)*1E3
+            }
+        }
+    }
+    return freq
+}
+
 func getSocketCpus() map[C.int]int {
 	slist := SocketList()
 	var cpu C.int
@@ -71,9 +127,15 @@ func getSocketCpus() map[C.int]int {
 	return outmap
 }
 
-func (m *LikwidCollector) Init() error {
+func (m *LikwidCollector) Init(config []byte) error {
 	var ret C.int
 	m.name = "LikwidCollector"
+	if len(config) > 0 {
+	    err := json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.setup()
 	cpulist := CpuList()
 	m.cpulist = make([]C.int, len(cpulist))
@@ -86,161 +148,183 @@ func (m *LikwidCollector) Init() error {
 			m.sock2tid[sid] = i
 		}
 	}
-	m.metrics = make(map[C.int]map[string]int)
-	m.groups = make(map[string]C.int)
+	m.results = make(map[int]map[int]map[string]interface{})
+	m.mresults = make(map[int]map[int]map[string]float64)
+	m.gmresults = make(map[int]map[string]float64)
 	ret = C.topology_init()
 	if ret != 0 {
 		return errors.New("Failed to initialize LIKWID topology")
 	}
+	os.Setenv("LIKWID_FORCE", "1")
 	ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
 	if ret != 0 {
 		C.topology_finalize()
 		return errors.New("Failed to initialize LIKWID topology")
 	}
-	gpath := C.CString(GROUPPATH)
-	C.config_setGroupPath(gpath)
-	C.free(unsafe.Pointer(gpath))
-
-	for g, metrics := range likwid_metrics {
-		cstr := C.CString(g)
-		gid := C.perfmon_addEventSet(cstr)
-		if gid >= 0 {
-			gmetrics := 0
-			for i, metric := range metrics {
-				idx, err := getMetricId(gid, metric.search)
-				if err != nil {
-					log.Print(err)
-				} else {
-					likwid_metrics[g][i].group_idx = idx
-					gmetrics++
-				}
-			}
-			if gmetrics > 0 {
-				m.groups[g] = gid
-			}
-		} else {
-			log.Print("Failed to add events set ", g)
-		}
-		C.free(unsafe.Pointer(cstr))
+	
+	for i, evset := range m.config.Eventsets {
+	    estr := eventsToEventStr(evset.Events)
+	    cstr := C.CString(estr)
+	    gid := C.perfmon_addEventSet(cstr)
+	    if gid >= 0 {
+	        m.groups = append(m.groups, gid)
+	    }
+	    C.free(unsafe.Pointer(cstr))
+	    m.results[i] = make(map[int]map[string]interface{})
+	    m.mresults[i] = make(map[int]map[string]float64)
+	    for tid, _ := range m.cpulist {
+	        m.results[i][tid] = make(map[string]interface{})
+	        m.mresults[i][tid] = make(map[string]float64)
+	        m.gmresults[tid] = make(map[string]float64)
+	    }
 	}
+
 	if len(m.groups) == 0 {
 		C.perfmon_finalize()
 		C.topology_finalize()
 		return errors.New("No LIKWID performance group initialized")
 	}
+	m.basefreq = getBaseFreq()
+	log.Print(m.basefreq)
 	m.init = true
 	return nil
 }
 
 func (m *LikwidCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-	if m.init {
-		var ret C.int
-		core_fp_any := make(map[int]float64, len(m.cpulist))
-		for _, cpu := range m.cpulist {
-			core_fp_any[int(cpu)] = 0.0
+	if !m.init {
+	    return
+	}
+	var ret C.int
+	
+	for i, gid := range m.groups {
+	    evset := m.config.Eventsets[i]
+	    ret = C.perfmon_setupCounters(gid)
+	    if ret != 0 {
+			log.Print("Failed to setup performance group ", C.perfmon_getGroupName(gid))
+			continue
 		}
-		for gname, gid := range m.groups {
-			ret = C.perfmon_setupCounters(gid)
-			if ret != 0 {
-				log.Print("Failed to setup performance group ", gname)
-				continue
-			}
-			ret = C.perfmon_startCounters()
-			if ret != 0 {
-				log.Print("Failed to start performance group ", gname)
-				continue
-			}
-			time.Sleep(interval)
-			ret = C.perfmon_stopCounters()
-			if ret != 0 {
-				log.Print("Failed to stop performance group ", gname)
-				continue
-			}
-
-			for _, lmetric := range likwid_metrics[gname] {
-				if lmetric.name == "pwr1" || lmetric.name == "pwr2" {
-					continue
-				}
-				mname := lmetric.name
-				inverse := false
-				if mname == "cpi" {
-					mname = "ipc"
-					inverse = true
-				}
-				if lmetric.socket_scope {
-					for sid, tid := range m.sock2tid {
-						res := C.perfmon_getLastMetric(gid, C.int(lmetric.group_idx), C.int(tid))
-						y, err := lp.New(lmetric.name,
-							map[string]string{"type": "socket", "type-id": fmt.Sprintf("%d", int(sid))},
-							map[string]interface{}{"value": float64(res)},
-							time.Now())
-						if err == nil {
-							*out = append(*out, y)
-						}
-						// log.Print("Metric '", lmetric.name,"' on Socket ",int(sid)," returns ", m.sockets[int(sid)][lmetric.name])
-					}
-				} else {
-					for tid, cpu := range m.cpulist {
-						res := C.perfmon_getLastMetric(gid, C.int(lmetric.group_idx), C.int(tid))
-						value := float64(res)
-						if inverse {
-							value = 1.0 / value
-						}
-						y, err := lp.New(mname,
-							map[string]string{"type": "cpu", "type-id": fmt.Sprintf("%d", int(cpu))},
-							map[string]interface{}{"value": value},
-							time.Now())
-						if err == nil {
-							*out = append(*out, y)
-						}
-						if lmetric.name == "flops_dp" {
-							core_fp_any[int(cpu)] += 2 * float64(res)
-						}
-						if lmetric.name == "flops_sp" {
-							core_fp_any[int(cpu)] += float64(res)
-						}
-						// log.Print("Metric '", lmetric.name,"' on CPU ",int(cpu)," returns ", m.cpus[int(cpu)][lmetric.name])
-					}
-				}
-			}
-			for sid, tid := range m.sock2tid {
-				sum := 0.0
-				valid := false
-				for _, lmetric := range likwid_metrics[gname] {
-					if lmetric.name == "pwr1" || lmetric.name == "pwr2" {
-						res := C.perfmon_getLastMetric(gid, C.int(lmetric.group_idx), C.int(tid))
-						sum += float64(res)
-						valid = true
-					}
-				}
-				if valid {
-					y, err := lp.New("power",
-						map[string]string{"type": "socket", "type-id": fmt.Sprintf("%d", int(sid))},
-						map[string]interface{}{"value": float64(sum)},
-						time.Now())
-					if err == nil {
-						*out = append(*out, y)
-					}
-				}
-			}
-			for cpu := range m.cpulist {
-				y, err := lp.New("flops_any",
-					map[string]string{"type": "cpu", "type-id": fmt.Sprintf("%d", int(cpu))},
-					map[string]interface{}{"value": float64(core_fp_any[int(cpu)])},
-					time.Now())
-				if err == nil {
-					*out = append(*out, y)
-				}
-			}
+		ret = C.perfmon_startCounters()
+		if ret != 0 {
+			log.Print("Failed to start performance group ", C.perfmon_getGroupName(gid))
+			continue
+		}
+		time.Sleep(interval)
+		ret = C.perfmon_stopCounters()
+		if ret != 0 {
+			log.Print("Failed to stop performance group ", C.perfmon_getGroupName(gid))
+			continue
+		}
+		var eidx C.int
+		for tid, _ := range m.cpulist {
+		    for eidx = 0; int(eidx) < len(evset.Events); eidx++ {
+		        ctr := C.perfmon_getCounterName(gid, eidx)
+		        gctr := C.GoString(ctr)
+		        res := C.perfmon_getLastResult(gid, eidx, C.int(tid))
+		        m.results[i][tid][gctr] = float64(res)
+		    }
+		    m.results[i][tid]["time"] = float64(interval)
+		    m.results[i][tid]["inverseClock"] = float64(1.0/m.basefreq)
+		    for _, metric := range evset.Metrics {
+		        expression, err := govaluate.NewEvaluableExpression(metric.Calc)
+		        if err != nil {
+		            log.Print(err.Error())
+		            continue
+		        }
+		        result, err := expression.Evaluate(m.results[i][tid]);
+		        if err != nil {
+		            log.Print(err.Error())
+		            continue
+		        }
+		        m.mresults[i][tid][metric.Name] = float64(result.(float64))
+		    }
 		}
 	}
+	
+	for _, metric := range m.config.Metrics {
+	    for tid, _ := range m.cpulist {
+	        var params map[string]interface{}
+	        expression, err := govaluate.NewEvaluableExpression(metric.Calc)
+	        if err != nil {
+                log.Print(err.Error())
+                continue
+            }
+            params = make(map[string]interface{})
+            for j, _ := range m.groups {
+                for mname, mres := range m.mresults[j][tid] {
+                    params[mname] = mres
+                }
+            }
+            result, err := expression.Evaluate(params);
+            if err != nil {
+                log.Print(err.Error())
+                continue
+            }
+            m.gmresults[tid][metric.Name] = float64(result.(float64))
+        }
+	}
+	for i, _ := range m.groups {
+	    evset := m.config.Eventsets[i]
+	    for _, metric := range evset.Metrics {
+	        _, skip := stringArrayContains(m.config.ExcludeMetrics, metric.Name)
+	        if metric.Publish && !skip {
+	            if metric.Socket_scope {
+	                for sid, tid := range m.sock2tid {
+	                    y, err := lp.New(metric.Name,
+					                        map[string]string{"type": "socket", "type-id": fmt.Sprintf("%d", int(sid))},
+					                        map[string]interface{}{"value": m.mresults[i][tid][metric.Name]},
+					                        time.Now())
+					    if err == nil {
+						    *out = append(*out, y)
+					    }
+	                }
+	            } else {
+	                for tid, cpu := range m.cpulist {
+	                    y, err := lp.New(metric.Name,
+							                map[string]string{"type": "cpu", "type-id": fmt.Sprintf("%d", int(cpu))},
+							                map[string]interface{}{"value": m.mresults[i][tid][metric.Name]},
+							                time.Now())
+						if err == nil {
+						    *out = append(*out, y)
+					    }
+	                }
+	            }
+	        }
+	    }
+	}
+	for _, metric := range m.config.Metrics {
+	    _, skip := stringArrayContains(m.config.ExcludeMetrics, metric.Name)
+        if metric.Publish && !skip {
+            if metric.Socket_scope {
+                for sid, tid := range m.sock2tid {
+                    y, err := lp.New(metric.Name,
+				                        map[string]string{"type": "socket", "type-id": fmt.Sprintf("%d", int(sid))},
+				                        map[string]interface{}{"value": m.gmresults[tid][metric.Name]},
+				                        time.Now())
+				    if err == nil {
+					    *out = append(*out, y)
+				    }
+                }
+            } else {
+                for tid, cpu := range m.cpulist {
+                    y, err := lp.New(metric.Name,
+						                map[string]string{"type": "cpu", "type-id": fmt.Sprintf("%d", int(cpu))},
+						                map[string]interface{}{"value": m.gmresults[tid][metric.Name]},
+						                time.Now())
+					if err == nil {
+					    *out = append(*out, y)
+				    }
+                }
+            }
+        }
+    }
 }
 
+
 func (m *LikwidCollector) Close() {
 	if m.init {
+	    m.init = false
 		C.perfmon_finalize()
 		C.topology_finalize()
-		m.init = false
 	}
 	return
 }

collectors/loadavgMetric.go

@@ -6,20 +6,32 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
 )
 
 const LOADAVGFILE = `/proc/loadavg`
 
+type LoadavgCollectorConfig struct {
+    ExcludeMetrics []string                 `json:"exclude_metrics, omitempty"`
+}
+
 type LoadavgCollector struct {
 	MetricCollector
 	tags         map[string]string
 	load_matches []string
 	proc_matches []string
+	config LoadavgCollectorConfig
 }
 
-func (m *LoadavgCollector) Init() error {
+func (m *LoadavgCollector) Init(config []byte) error {
 	m.name = "LoadavgCollector"
 	m.setup()
+	if len(config) > 0 {
+	    err := json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.tags = map[string]string{"type": "node"}
 	m.load_matches = []string{"load_one", "load_five", "load_fifteen"}
 	m.proc_matches = []string{"proc_run", "proc_total"}
@@ -28,7 +40,10 @@ func (m *LoadavgCollector) Init() error {
 }
 
 func (m *LoadavgCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-
+    var skip bool
+    if !m.init {
+        return
+    }
 	buffer, err := ioutil.ReadFile(string(LOADAVGFILE))
 
 	if err != nil {
@@ -39,8 +54,9 @@ func (m *LoadavgCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 	for i, name := range m.load_matches {
 		x, err := strconv.ParseFloat(ls[i], 64)
 		if err == nil {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, name)
 			y, err := lp.New(name, m.tags, map[string]interface{}{"value": float64(x)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
@@ -49,8 +65,9 @@ func (m *LoadavgCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 	for i, name := range m.proc_matches {
 		x, err := strconv.ParseFloat(lv[i], 64)
 		if err == nil {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, name)
 			y, err := lp.New(name, m.tags, map[string]interface{}{"value": float64(x)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}

collectors/lustreMetric.go

@@ -7,18 +7,34 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
+	"errors"
 )
 
 const LUSTREFILE = `/proc/fs/lustre/llite/lnec-XXXXXX/stats`
 
+type LustreCollectorConfig struct {
+    procfiles []string `json:"procfiles"`
+    ExcludeMetrics []string                 `json:"exclude_metrics"`
+}
+
 type LustreCollector struct {
 	MetricCollector
 	tags    map[string]string
 	matches map[string]map[string]int
+	devices []string
+	config LustreCollectorConfig
 }
 
-func (m *LustreCollector) Init() error {
+func (m *LustreCollector) Init(config []byte) error {
+    var err error
 	m.name = "LustreCollector"
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.setup()
 	m.tags = map[string]string{"type": "node"}
 	m.matches = map[string]map[string]int{"read_bytes": {"read_bytes": 6, "read_requests": 1},
@@ -29,38 +45,58 @@ func (m *LustreCollector) Init() error {
 		"getattr":          {"getattr": 1},
 		"statfs":           {"statfs": 1},
 		"inode_permission": {"inode_permission": 1}}
-	_, err := ioutil.ReadFile(string(LUSTREFILE))
-	if err == nil {
-		m.init = true
+	m.devices = make([]string, 0)
+	for _, p := range m.config.procfiles {
+	    _, err := ioutil.ReadFile(p)
+	    if err == nil {
+	        m.devices = append(m.devices, p)
+	    } else {
+	        log.Print(err.Error())
+	        continue
+	    }
 	}
-	return err
+	
+	if len(m.devices) == 0 {
+		return errors.New("No metrics to collect")
+	}
+	m.init = true
+	return nil
 }
 
 func (m *LustreCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-	buffer, err := ioutil.ReadFile(string(LUSTREFILE))
+    if !m.init {
+        return
+    }
+    for _, p := range m.devices {
+	    buffer, err := ioutil.ReadFile(p)
 
-	if err != nil {
-		log.Print(err)
-		return
-	}
+	    if err != nil {
+		    log.Print(err)
+		    return
+	    }
 
-	for _, line := range strings.Split(string(buffer), "\n") {
-		lf := strings.Fields(line)
-		if len(lf) > 1 {
-			for match, fields := range m.matches {
-				if lf[0] == match {
-					for name, idx := range fields {
-						x, err := strconv.ParseInt(lf[idx], 0, 64)
-						if err == nil {
-							y, err := lp.New(name, m.tags, map[string]interface{}{"value": x}, time.Now())
-							if err == nil {
-								*out = append(*out, y)
-							}
-						}
-					}
-				}
-			}
-		}
+	    for _, line := range strings.Split(string(buffer), "\n") {
+		    lf := strings.Fields(line)
+		    if len(lf) > 1 {
+			    for match, fields := range m.matches {
+				    if lf[0] == match {
+					    for name, idx := range fields {
+					        _, skip := stringArrayContains(m.config.ExcludeMetrics, name)
+					        if skip {
+					            continue
+					        }
+						    x, err := strconv.ParseInt(lf[idx], 0, 64)
+						    if err == nil {
+							    y, err := lp.New(name, m.tags, map[string]interface{}{"value": x}, time.Now())
+							    if err == nil {
+								    *out = append(*out, y)
+							    }
+						    }
+					    }
+				    }
+			    }
+		    }
+	    }
 	}
 }
 

collectors/memstatMetric.go

@@ -9,22 +9,36 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
 )
 
 const MEMSTATFILE = `/proc/meminfo`
 
+type MemstatCollectorConfig struct {
+    ExcludeMetrics []string                 `json:"exclude_metrics"`
+}
+
 type MemstatCollector struct {
 	MetricCollector
 	stats   map[string]int64
 	tags    map[string]string
 	matches map[string]string
+	config MemstatCollectorConfig
 }
 
-func (m *MemstatCollector) Init() error {
+func (m *MemstatCollector) Init(config []byte) error {
+    var err error
 	m.name = "MemstatCollector"
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.stats = make(map[string]int64)
+	m.matches = make(map[string]string)
 	m.tags = map[string]string{"type": "node"}
-	m.matches = map[string]string{`MemTotal`: "mem_total",
+	matches := map[string]string{`MemTotal`: "mem_total",
 		"SwapTotal":    "swap_total",
 		"SReclaimable": "mem_sreclaimable",
 		"Slab":         "mem_slab",
@@ -33,8 +47,17 @@ func (m *MemstatCollector) Init() error {
 		"Cached":       "mem_cached",
 		"MemAvailable": "mem_available",
 		"SwapFree":     "swap_free"}
+	for k, v := range matches {
+	    _, skip := stringArrayContains(m.config.ExcludeMetrics, k)
+	    if (!skip) {
+	        m.matches[k] = v
+	    }
+	}
+	if len(m.matches) == 0 {
+	    return errors.New("No metrics to collect")
+	}
 	m.setup()
-	_, err := ioutil.ReadFile(string(MEMSTATFILE))
+	_, err = ioutil.ReadFile(string(MEMSTATFILE))
 	if err == nil {
 		m.init = true
 	}
@@ -42,15 +65,17 @@ func (m *MemstatCollector) Init() error {
 }
 
 func (m *MemstatCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-	buffer, err := ioutil.ReadFile(string(MEMSTATFILE))
+    if !m.init {
+        return
+    }
 
+	buffer, err := ioutil.ReadFile(string(MEMSTATFILE))
 	if err != nil {
 		log.Print(err)
 		return
 	}
 
 	ll := strings.Split(string(buffer), "\n")
-
 	for _, line := range ll {
 		ls := strings.Split(line, `:`)
 		if len(ls) > 1 {
@@ -81,16 +106,18 @@ func (m *MemstatCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 		if _, buffers := m.stats[`Buffers`]; buffers {
 			if _, cached := m.stats[`Cached`]; cached {
 				memUsed := m.stats[`MemTotal`] - (m.stats[`MemFree`] + m.stats[`Buffers`] + m.stats[`Cached`])
+				_, skip := stringArrayContains(m.config.ExcludeMetrics, "mem_used")
 				y, err := lp.New("mem_used", m.tags, map[string]interface{}{"value": int(float64(memUsed) * 1.0e-3)}, time.Now())
-				if err == nil {
+				if err == nil && !skip {
 					*out = append(*out, y)
 				}
 			}
 		}
 	}
 	if _, found := m.stats[`MemShared`]; found {
+	    _, skip := stringArrayContains(m.config.ExcludeMetrics, "mem_shared")
 		y, err := lp.New("mem_shared", m.tags, map[string]interface{}{"value": int(float64(m.stats[`MemShared`]) * 1.0e-3)}, time.Now())
-		if err == nil {
+		if err == nil && !skip {
 			*out = append(*out, y)
 		}
 	}

collectors/metricCollector.go

@@ -7,11 +7,12 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"errors"
 )
 
 type MetricGetter interface {
 	Name() string
-	Init() error
+	Init(config []byte) error
 	Read(time.Duration, *[]lp.MutableMetric)
 	Close()
 	//	GetNodeMetric() map[string]interface{}
@@ -67,6 +68,15 @@ func intArrayContains(array []int, str int) (int, bool) {
 	return -1, false
 }
 
+func stringArrayContains(array []string, str string) (int, bool) {
+    for i, a := range array {
+		if a == str {
+			return i, true
+		}
+	}
+	return -1, false
+}
+
 func SocketList() []int {
 	buffer, err := ioutil.ReadFile("/proc/cpuinfo")
 	if err != nil {
@@ -132,3 +142,13 @@ func Fields2Map(metric lp.Metric) map[string]interface{} {
 	}
 	return fields
 }
+
+func RemoveFromStringList(s []string, r string) ([]string, error) {
+    for i, item := range s {
+        if r == item {
+            return append(s[:i], s[i+1:]...), nil
+        }
+    }
+    return s, errors.New("No such string in list")
+}
+

collectors/netstatMetric.go

@@ -7,27 +7,36 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"encoding/json"
 )
 
 const NETSTATFILE = `/proc/net/dev`
 
-type NetstatCollector struct {
-	MetricCollector
-	matches map[int]string
-	tags    map[string]string
+type NetstatCollectorConfig struct {
+    ExcludeDevices []string                 `json:"exclude_devices, omitempty"`
 }
 
-func (m *NetstatCollector) Init() error {
+type NetstatCollector struct {
+	MetricCollector
+	config NetstatCollectorConfig
+	matches map[int]string
+}
+
+func (m *NetstatCollector) Init(config []byte) error {
 	m.name = "NetstatCollector"
 	m.setup()
-	m.tags = map[string]string{"type": "node"}
 	m.matches = map[int]string{
 		1:  "bytes_in",
 		9:  "bytes_out",
 		2:  "pkts_in",
 		10: "pkts_out",
 	}
-	_, err := ioutil.ReadFile(string(NETSTATFILE))
+	err := json.Unmarshal(config, &m.config)
+	if err != nil {
+	    log.Print(err.Error())
+	    return err
+	}
+	_, err = ioutil.ReadFile(string(NETSTATFILE))
 	if err == nil {
 		m.init = true
 	}
@@ -48,13 +57,20 @@ func (m *NetstatCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 		}
 		f := strings.Fields(l)
 		dev := f[0][0 : len(f[0])-1]
-		if dev == "lo" {
+		cont := false
+		for _, d := range m.config.ExcludeDevices {
+		    if d == dev {
+		        cont = true
+		    }
+		}
+		if cont {
 			continue
 		}
+		tags := map[string]string{"device" : dev, "type": "node"}
 		for i, name := range m.matches {
 			v, err := strconv.ParseInt(f[i], 10, 0)
 			if err == nil {
-				y, err := lp.New(name, m.tags, map[string]interface{}{"value": int(float64(v) * 1.0e-3)}, time.Now())
+				y, err := lp.New(name, tags, map[string]interface{}{"value": int(float64(v) * 1.0e-3)}, time.Now())
 				if err == nil {
 					*out = append(*out, y)
 				}

collectors/nvidiaMetric.go

@@ -7,11 +7,18 @@ import (
 	lp "github.com/influxdata/line-protocol"
 	"log"
 	"time"
+	"encoding/json"
 )
 
+type NvidiaCollectorConfig struct {
+    ExcludeMetrics []string                 `json:"exclude_metrics, omitempty"`
+    ExcludeDevices []string                 `json:"exclude_devices, omitempty"`
+}
+
 type NvidiaCollector struct {
 	MetricCollector
 	num_gpus int
+	config NvidiaCollectorConfig
 }
 
 func (m *NvidiaCollector) CatchPanic() error {
@@ -24,20 +31,26 @@ func (m *NvidiaCollector) CatchPanic() error {
 	return nil
 }
 
-func (m *NvidiaCollector) Init() error {
+func (m *NvidiaCollector) Init(config []byte) error {
+    var err error
 	m.name = "NvidiaCollector"
 	m.setup()
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
 	m.num_gpus = 0
 	defer m.CatchPanic()
 	ret := nvml.Init()
 	if ret != nvml.SUCCESS {
-		err := errors.New(nvml.ErrorString(ret))
-		log.Print(err)
+		err = errors.New(nvml.ErrorString(ret))
 		return err
 	}
 	m.num_gpus, ret = nvml.DeviceGetCount()
 	if ret != nvml.SUCCESS {
-		err := errors.New(nvml.ErrorString(ret))
+		err = errors.New(nvml.ErrorString(ret))
 		return err
 	}
 	m.init = true
@@ -45,23 +58,31 @@ func (m *NvidiaCollector) Init() error {
 }
 
 func (m *NvidiaCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
-
+    if (!m.init) {
+        return
+    }
 	for i := 0; i < m.num_gpus; i++ {
 		device, ret := nvml.DeviceGetHandleByIndex(i)
 		if ret != nvml.SUCCESS {
 			log.Fatalf("Unable to get device at index %d: %v", i, nvml.ErrorString(ret))
 			return
 		}
+		_, skip := stringArrayContains(m.config.ExcludeDevices, fmt.Sprintf("%d", i))
+		if skip {
+		    continue
+		}
 		tags := map[string]string{"type": "accelerator", "type-id": fmt.Sprintf("%d", i)}
 
 		util, ret := nvml.DeviceGetUtilizationRates(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "util")
 			y, err := lp.New("util", tags, map[string]interface{}{"value": float64(util.Gpu)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
+			_, skip = stringArrayContains(m.config.ExcludeMetrics, "mem_util")
 			y, err = lp.New("mem_util", tags, map[string]interface{}{"value": float64(util.Memory)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
@@ -69,29 +90,33 @@ func (m *NvidiaCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 		meminfo, ret := nvml.DeviceGetMemoryInfo(device)
 		if ret == nvml.SUCCESS {
 			t := float64(meminfo.Total) / (1024 * 1024)
+			_, skip = stringArrayContains(m.config.ExcludeMetrics, "mem_total")
 			y, err := lp.New("mem_total", tags, map[string]interface{}{"value": t}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 			f := float64(meminfo.Used) / (1024 * 1024)
+			_, skip = stringArrayContains(m.config.ExcludeMetrics, "fb_memory")
 			y, err = lp.New("fb_memory", tags, map[string]interface{}{"value": f}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		temp, ret := nvml.DeviceGetTemperature(device, nvml.TEMPERATURE_GPU)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "temp")
 			y, err := lp.New("temp", tags, map[string]interface{}{"value": float64(temp)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		fan, ret := nvml.DeviceGetFanSpeed(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "fan")
 			y, err := lp.New("fan", tags, map[string]interface{}{"value": float64(fan)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
@@ -108,116 +133,131 @@ func (m *NvidiaCollector) Read(interval time.Duration, out *[]lp.MutableMetric)
 			default:
 				y, err = lp.New("ecc_mode", tags, map[string]interface{}{"value": string("UNKNOWN")}, time.Now())
 			}
-			if err == nil {
+			_, skip = stringArrayContains(m.config.ExcludeMetrics, "ecc_mode")
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		} else if ret == nvml.ERROR_NOT_SUPPORTED {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "ecc_mode")
 			y, err := lp.New("ecc_mode", tags, map[string]interface{}{"value": string("N/A")}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		pstate, ret := nvml.DeviceGetPerformanceState(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "perf_state")
 			y, err := lp.New("perf_state", tags, map[string]interface{}{"value": fmt.Sprintf("P%d", int(pstate))}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		power, ret := nvml.DeviceGetPowerUsage(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "power_usage_report")
 			y, err := lp.New("power_usage_report", tags, map[string]interface{}{"value": float64(power) / 1000}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		gclk, ret := nvml.DeviceGetClockInfo(device, nvml.CLOCK_GRAPHICS)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "graphics_clock_report")
 			y, err := lp.New("graphics_clock_report", tags, map[string]interface{}{"value": float64(gclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		smclk, ret := nvml.DeviceGetClockInfo(device, nvml.CLOCK_SM)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "sm_clock_report")
 			y, err := lp.New("sm_clock_report", tags, map[string]interface{}{"value": float64(smclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		memclk, ret := nvml.DeviceGetClockInfo(device, nvml.CLOCK_MEM)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "mem_clock_report")
 			y, err := lp.New("mem_clock_report", tags, map[string]interface{}{"value": float64(memclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		max_gclk, ret := nvml.DeviceGetMaxClockInfo(device, nvml.CLOCK_GRAPHICS)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "max_graphics_clock")
 			y, err := lp.New("max_graphics_clock", tags, map[string]interface{}{"value": float64(max_gclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		max_smclk, ret := nvml.DeviceGetClockInfo(device, nvml.CLOCK_SM)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "max_sm_clock")
 			y, err := lp.New("max_sm_clock", tags, map[string]interface{}{"value": float64(max_smclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		max_memclk, ret := nvml.DeviceGetClockInfo(device, nvml.CLOCK_MEM)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "max_mem_clock")
 			y, err := lp.New("max_mem_clock", tags, map[string]interface{}{"value": float64(max_memclk)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		ecc_db, ret := nvml.DeviceGetTotalEccErrors(device, 1, 1)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "ecc_db_error")
 			y, err := lp.New("ecc_db_error", tags, map[string]interface{}{"value": float64(ecc_db)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		ecc_sb, ret := nvml.DeviceGetTotalEccErrors(device, 0, 1)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "ecc_sb_error")
 			y, err := lp.New("ecc_sb_error", tags, map[string]interface{}{"value": float64(ecc_sb)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		pwr_limit, ret := nvml.DeviceGetPowerManagementLimit(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "power_man_limit")
 			y, err := lp.New("power_man_limit", tags, map[string]interface{}{"value": float64(pwr_limit)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		enc_util, _, ret := nvml.DeviceGetEncoderUtilization(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "encoder_util")
 			y, err := lp.New("encoder_util", tags, map[string]interface{}{"value": float64(enc_util)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}
 
 		dec_util, _, ret := nvml.DeviceGetDecoderUtilization(device)
 		if ret == nvml.SUCCESS {
+		    _, skip = stringArrayContains(m.config.ExcludeMetrics, "decoder_util")
 			y, err := lp.New("decoder_util", tags, map[string]interface{}{"value": float64(dec_util)}, time.Now())
-			if err == nil {
+			if err == nil && !skip {
 				*out = append(*out, y)
 			}
 		}

collectors/topprocsMetric.go

@@ -7,29 +7,50 @@ import (
 	"os/exec"
 	"strings"
 	"time"
+	"encoding/json"
+	"errors"
 )
 
-const NUM_PROCS = 5
+const MAX_NUM_PROCS = 10
+
+type TopProcsCollectorConfig struct {
+    num_procs int                 `json:"num_procs"`
+}
 
 type TopProcsCollector struct {
 	MetricCollector
 	tags map[string]string
+	config TopProcsCollectorConfig
 }
 
-func (m *TopProcsCollector) Init() error {
+func (m *TopProcsCollector) Init(config []byte) error {
+    var err error
 	m.name = "TopProcsCollector"
 	m.tags = map[string]string{"type": "node"}
+	if len(config) > 0 {
+	    err = json.Unmarshal(config, &m.config)
+	    if err != nil {
+	        return err
+	    }
+	}
+	if m.config.num_procs <= 0 || m.config.num_procs > MAX_NUM_PROCS {
+	    return errors.New(fmt.Sprintf("num_procs option must be set in 'topprocs' config (range: 1-%d)", MAX_NUM_PROCS))
+	}
 	m.setup()
 	command := exec.Command("ps", "-Ao", "comm", "--sort=-pcpu")
 	command.Wait()
-	_, err := command.Output()
-	if err == nil {
-		m.init = true
+	_, err = command.Output()
+	if err != nil {
+		return errors.New("Failed to execute command")
 	}
+	m.init = true
 	return nil
 }
 
 func (m *TopProcsCollector) Read(interval time.Duration, out *[]lp.MutableMetric) {
+    if !m.init {
+        return
+    }
 	command := exec.Command("ps", "-Ao", "comm", "--sort=-pcpu")
 	command.Wait()
 	stdout, err := command.Output()
@@ -39,7 +60,7 @@ func (m *TopProcsCollector) Read(interval time.Duration, out *[]lp.MutableMetric
 	}
 
 	lines := strings.Split(string(stdout), "\n")
-	for i := 1; i < NUM_PROCS+1; i++ {
+	for i := 1; i < m.config.num_procs+1; i++ {
 		name := fmt.Sprintf("topproc%d", i)
 		y, err := lp.New(name, m.tags, map[string]interface{}{"value": string(lines[i])}, time.Now())
 		if err == nil {

config.json

@@ -1,30 +1,142 @@
 {
-    "sink": {
-        "user": "testuser",
-        "password": "testpass",
-        "host": "127.0.0.1",
-        "port": "9090",
-        "database": "testdb",
-        "organization": "testorg",
-        "type": "stdout"
+  "sink": {
+    "user": "testuser",
+    "password": "testpass",
+    "host": "127.0.0.1",
+    "port": "9090",
+    "database": "testdb",
+    "organization": "testorg",
+    "type": "stdout"
+  },
+  "interval": 3,
+  "duration": 1,
+  "collectors": [
+    "loadavg",
+    "likwid"
+  ],
+  "default_tags": {
+    "cluster": "testcluster"
+  },
+  "receiver": {
+    "type": "none"
+  },
+  "collect_config": {
+    "netstat": {
+      "exclude_devices": [
+        "enp195s0f1",
+        "lo"
+      ]
     },
-    "interval" : 3,
-    "duration" : 1,
-    "collectors": [
-        "cpustat",
-        "loadavg",
-        "memstat",
-        "netstat",
-        "topprocs",
-        "lustrestat",
-        "ibstat",
-        "nvidia",
-        "likwid"
-    ],
-    "default_tags": {
-        "cluster": "testcluster"
+    "ibstat": {
+      "exclude_devices": [
+        "mlx5_0",
+        "mlx5_1"
+      ]
     },
-    "receiver": {
-        "type": "none"
+    "cpustat": {
+      "exclude_metrics": [
+        "cpu_softirq"
+      ]
+    },
+    "diskstat": {
+      "exclude_metrics": [
+        "writes_merged"
+      ]
+    },
+    "nvidia": {
+      "exclude_metrics": [
+        "util"
+      ]
+    },
+    "loadavg": {
+      "exclude_metrics": [
+        "load_fifteen"
+      ]
+    },
+    "likwid": {
+      "exclude_metrics": [
+        "load_fifteen"
+      ],
+      "eventsets": [
+        {
+          "events": {
+            "FIXC1": "ACTUAL_CPU_CLOCK",
+            "FIXC2": "MAX_CPU_CLOCK",
+            "PMC0": "RETIRED_INSTRUCTIONS",
+            "PMC1": "CPU_CLOCKS_UNHALTED",
+            "PMC2": "RETIRED_SSE_AVX_FLOPS_ALL",
+            "PMC3": "MERGE",
+            "DFC0": "DRAM_CHANNEL_0",
+            "DFC1": "DRAM_CHANNEL_1",
+            "DFC2": "DRAM_CHANNEL_2",
+            "DFC3": "DRAM_CHANNEL_3"
+          },
+          "metrics": [
+            {
+              "name": "ipc",
+              "calc": "PMC0/PMC1",
+              "socket_scope": false,
+              "publish": true
+            },
+            {
+              "name": "flops_any",
+              "calc": "0.000001*PMC2/time",
+              "socket_scope": false,
+              "publish": true
+            },
+            {
+              "name": "clock_mhz",
+              "calc": "0.000001*(FIXC1/FIXC2)/inverseClock",
+              "socket_scope": false,
+              "publish": true
+            },
+            {
+              "name": "mem1",
+              "calc": "0.000001*(DFC0+DFC1+DFC2+DFC3)*64.0/time",
+              "socket_scope": true,
+              "publish": false
+            }
+          ]
+        },
+        {
+          "events": {
+            "DFC0": "DRAM_CHANNEL_4",
+            "DFC1": "DRAM_CHANNEL_5",
+            "DFC2": "DRAM_CHANNEL_6",
+            "DFC3": "DRAM_CHANNEL_7",
+            "PWR0": "RAPL_CORE_ENERGY",
+            "PWR1": "RAPL_PKG_ENERGY"
+          },
+          "metrics": [
+            {
+              "name": "pwr_core",
+              "calc": "PWR0/time",
+              "socket_scope": false,
+              "publish": true
+            },
+            {
+              "name": "pwr_pkg",
+              "calc": "PWR1/time",
+              "socket_scope": true,
+              "publish": true
+            },
+            {
+              "name": "mem2",
+              "calc": "0.000001*(DFC0+DFC1+DFC2+DFC3)*64.0/time",
+              "socket_scope": true,
+              "publish": false
+            }
+          ]
+        }
+      ],
+      "globalmetrics": [
+        {
+          "name": "mem_bw",
+          "calc": "mem1+mem2",
+          "socket_scope": true,
+          "publish": true
+        }
+      ]
     }
+  }
 }

metric-collector.go

@@ -51,6 +51,7 @@ type GlobalConfig struct {
 	Collectors []string                 `json:"collectors"`
 	Receiver   receivers.ReceiverConfig `json:"receiver"`
 	DefTags    map[string]string        `json:"default_tags"`
+	CollectConfigs map[string]json.RawMessage    `json:"collect_config"`
 }
 
 // Load JSON configuration file
@@ -62,7 +63,7 @@ func LoadConfiguration(file string, config *GlobalConfig) error {
 		return err
 	}
 	jsonParser := json.NewDecoder(configFile)
-	jsonParser.Decode(config)
+	err = jsonParser.Decode(config)
 	return err
 }
 
@@ -71,11 +72,17 @@ func ReadCli() map[string]string {
 	cfg := flag.String("config", "./config.json", "Path to configuration file")
 	logfile := flag.String("log", "stderr", "Path for logfile")
 	pidfile := flag.String("pidfile", "/var/run/cc-metric-collector.pid", "Path for PID file")
+	once := flag.Bool("once", false, "Run all collectors only once")
 	flag.Parse()
 	m = make(map[string]string)
 	m["configfile"] = *cfg
 	m["logfile"] = *logfile
 	m["pidfile"] = *pidfile
+	if *once {
+	    m["once"] = "true"
+	} else {
+	    m["once"] = "false"
+	}
 	return m
 }
 
@@ -114,27 +121,33 @@ func RemovePidfile(pidfile string) error {
 	return nil
 }
 
+// General shutdown function that gets executed in case of interrupt or graceful shutdown
+func shutdown(wg *sync.WaitGroup, collectors []string, sink sinks.SinkFuncs, recv receivers.ReceiverFuncs, pidfile string) {
+    log.Print("Shutdown...")
+	for _, c := range collectors {
+		col := Collectors[c]
+		log.Print("Stop ", col.Name())
+		col.Close()
+	}
+	time.Sleep(1 * time.Second)
+	if recv != nil {
+		recv.Close()
+	}
+	sink.Close()
+	RemovePidfile(pidfile)
+	wg.Done()
+}
+
 // Register an interrupt handler for Ctrl+C and similar. At signal,
 // all collectors are closed
-func shutdown(wg *sync.WaitGroup, config *GlobalConfig, sink sinks.SinkFuncs, recv receivers.ReceiverFuncs, pidfile string) {
+func prepare_shutdown(wg *sync.WaitGroup, config *GlobalConfig, sink sinks.SinkFuncs, recv receivers.ReceiverFuncs, pidfile string) {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, os.Interrupt)
 
 	go func(wg *sync.WaitGroup) {
 		<-sigs
 		log.Print("Shutdown...")
-		for _, c := range config.Collectors {
-			col := Collectors[c]
-			log.Print("Stop ", col.Name())
-			col.Close()
-		}
-		time.Sleep(1 * time.Second)
-		if recv != nil {
-			recv.Close()
-		}
-		sink.Close()
-		RemovePidfile(pidfile)
-		wg.Done()
+		shutdown(wg, config.Collectors, sink, recv, pidfile)
 	}(wg)
 }
 
@@ -162,6 +175,7 @@ func main() {
 	err = LoadConfiguration(clicfg["configfile"], &config)
 	if err != nil {
 		log.Print("Error reading configuration file ", clicfg["configfile"])
+		log.Print(err.Error())
 		return
 	}
 	if config.Interval <= 0 || time.Duration(config.Interval)*time.Second <= 0 {
@@ -214,15 +228,19 @@ func main() {
 	}
 
 	// Register interrupt handler
-	shutdown(&wg, &config, sink, recv, clicfg["pidfile"])
+	prepare_shutdown(&wg, &config, sink, recv, clicfg["pidfile"])
 
 	// Initialize all collectors
 	tmp := make([]string, 0)
 	for _, c := range config.Collectors {
 		col := Collectors[c]
-		err = col.Init()
+		conf, found := config.CollectConfigs[c]
+		if !found {
+		    conf = json.RawMessage("")
+		}
+		err = col.Init([]byte(conf))
 		if err != nil {
-			log.Print("SKIP ", col.Name())
+			log.Print("SKIP ", col.Name(), " (", err.Error(),")")
 		} else {
 			log.Print("Start ", col.Name())
 			tmp = append(tmp, c)
@@ -232,7 +250,11 @@ func main() {
 	config.DefTags["hostname"] = host
 
 	// Setup up ticker loop
-	log.Print("Running loop every ", time.Duration(config.Interval)*time.Second)
+	if clicfg["once"] != "true" {
+    	log.Print("Running loop every ", time.Duration(config.Interval)*time.Second)
+    } else {
+        log.Print("Running loop only once")
+    }
 	ticker := time.NewTicker(time.Duration(config.Interval) * time.Second)
 	done := make(chan bool)
 
@@ -274,6 +296,10 @@ func main() {
 				if err := sink.Flush(); err != nil {
 					log.Printf("sink error: %s\n", err)
 				}
+				if clicfg["once"] == "true" {
+		            shutdown(&wg, config.Collectors, sink, recv, clicfg["pidfile"])
+		            return
+				}
 			}
 		}
 	}()