mirror of
https://github.com/prometheus/node_exporter
synced 2024-12-14 02:15:18 +00:00
c9f421d0dd
* collector/cpu_*: rename nodeCpuSecondsDesc to nodeCPUSecondsDesc Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com> * collector/qdisc_linux.go: add NewQdiscStatCollector comment Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com> * collector/cpu_linux.go: rename core_map to coreMap Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com>
78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
// Copyright 2018 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build !nocpu
|
|
|
|
package collector
|
|
|
|
import (
|
|
"strconv"
|
|
"unsafe"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
/*
|
|
#include <sys/param.h>
|
|
#include <sys/sched.h>
|
|
*/
|
|
import "C"
|
|
|
|
type cpuCollector struct {
|
|
cpu typedDesc
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("cpu", defaultEnabled, NewCpuCollector)
|
|
}
|
|
|
|
func NewCpuCollector() (Collector, error) {
|
|
return &cpuCollector{
|
|
cpu: typedDesc{nodeCPUSecondsDesc, prometheus.CounterValue},
|
|
}, nil
|
|
}
|
|
|
|
func (c *cpuCollector) Update(ch chan<- prometheus.Metric) (err error) {
|
|
clockb, err := unix.SysctlRaw("kern.clockrate")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
clock := *(*C.struct_clockinfo)(unsafe.Pointer(&clockb[0]))
|
|
hz := float64(clock.stathz)
|
|
|
|
ncpus, err := unix.SysctlUint32("hw.ncpu")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var cp_time [][C.CPUSTATES]C.int64_t
|
|
for i := 0; i < int(ncpus); i++ {
|
|
cp_timeb, err := unix.SysctlRaw("kern.cp_time2", i)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
cp_time = append(cp_time, *(*[C.CPUSTATES]C.int64_t)(unsafe.Pointer(&cp_timeb[0])))
|
|
}
|
|
|
|
for cpu, time := range cp_time {
|
|
lcpu := strconv.Itoa(cpu)
|
|
ch <- c.cpu.mustNewConstMetric(float64(time[C.CP_USER])/hz, lcpu, "user")
|
|
ch <- c.cpu.mustNewConstMetric(float64(time[C.CP_NICE])/hz, lcpu, "nice")
|
|
ch <- c.cpu.mustNewConstMetric(float64(time[C.CP_SYS])/hz, lcpu, "system")
|
|
ch <- c.cpu.mustNewConstMetric(float64(time[C.CP_INTR])/hz, lcpu, "interrupt")
|
|
ch <- c.cpu.mustNewConstMetric(float64(time[C.CP_IDLE])/hz, lcpu, "idle")
|
|
}
|
|
return err
|
|
}
|