Esempio n. 1
0
func (c *meminfoCollector) Update(ch chan<- prometheus.Metric) (err error) {
	var pages map[string]C.int
	pages = make(map[string]C.int)

	size := C._sysctl(C.CString("vm.stats.vm.v_page_size"))
	if size == -1 {
		return errors.New("sysctl(vm.stats.vm.v_page_size) failed")
	}
	if size == -2 {
		return errors.New("sysctl(vm.stats.vm.v_page_size) failed, wrong buffer size")
	}

	pages["active"] = C._sysctl(C.CString("vm.stats.vm.v_active_count"))
	pages["inactive"] = C._sysctl(C.CString("vm.stats.vm.v_inactive_count"))
	pages["wire"] = C._sysctl(C.CString("vm.stats.vm.v_wire_count"))
	pages["cache"] = C._sysctl(C.CString("vm.stats.vm.v_cache_count"))
	pages["free"] = C._sysctl(C.CString("vm.stats.vm.v_free_count"))
	pages["swappgsin"] = C._sysctl(C.CString("vm.stats.vm.v_swappgsin"))
	pages["swappgsout"] = C._sysctl(C.CString("vm.stats.vm.v_swappgsout"))
	pages["total"] = C._sysctl(C.CString("vm.stats.vm.v_page_count"))

	for key := range pages {
		if pages[key] == -1 {
			return errors.New("sysctl() failed for " + key)
		}
		if pages[key] == -2 {
			return errors.New("sysctl() failed for " + key + ", wrong buffer size")
		}
	}

	log.Debugf("Set node_mem: %#v", pages)
	for k, v := range pages {
		if _, ok := c.metrics[k]; !ok {
			c.metrics[k] = prometheus.NewGauge(prometheus.GaugeOpts{
				Namespace: Namespace,
				Subsystem: memInfoSubsystem,
				Name:      k,
				Help:      k + " from sysctl()",
			})
		}
		// Convert metrics to kB (same as Linux meminfo).
		c.metrics[k].Set(float64(v) * float64(size))
		c.metrics[k].Collect(ch)
	}
	return err
}
Esempio n. 2
0
func (c *meminfoCollector) Update(ch chan<- prometheus.Metric) (err error) {
	var pages map[string]C.int
	pages = make(map[string]C.int)

	size := C._sysctl(C.CString("vm.stats.vm.v_page_size"))
	if size == -1 {
		return errors.New("sysctl(vm.stats.vm.v_page_size) failed")
	}
	if size == -2 {
		return errors.New("sysctl(vm.stats.vm.v_page_size) failed, wrong buffer size")
	}

	pages["active"] = C._sysctl(C.CString("vm.stats.vm.v_active_count"))
	pages["inactive"] = C._sysctl(C.CString("vm.stats.vm.v_inactive_count"))
	pages["wire"] = C._sysctl(C.CString("vm.stats.vm.v_wire_count"))
	pages["cache"] = C._sysctl(C.CString("vm.stats.vm.v_cache_count"))
	pages["free"] = C._sysctl(C.CString("vm.stats.vm.v_free_count"))
	pages["swappgsin"] = C._sysctl(C.CString("vm.stats.vm.v_swappgsin"))
	pages["swappgsout"] = C._sysctl(C.CString("vm.stats.vm.v_swappgsout"))
	pages["total"] = C._sysctl(C.CString("vm.stats.vm.v_page_count"))

	for key := range pages {
		if pages[key] == -1 {
			return errors.New("sysctl() failed for " + key)
		}
		if pages[key] == -2 {
			return errors.New("sysctl() failed for " + key + ", wrong buffer size")
		}
	}

	for k, v := range pages {
		ch <- prometheus.MustNewConstMetric(
			prometheus.NewDesc(
				prometheus.BuildFQName(Namespace, memInfoSubsystem, k),
				k+" from sysctl()",
				nil, nil,
			),
			// Convert metrics to kB (same as Linux meminfo).
			prometheus.UntypedValue, float64(v)*float64(size),
		)
	}
	return err
}