mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
100 lines
2.9 KiB
Go
100 lines
2.9 KiB
Go
// Copyright 2017 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 freebsd dragonfly
|
|
// +build !noexec
|
|
|
|
package collector
|
|
|
|
import (
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
type execCollector struct {
|
|
sysctls []bsdSysctl
|
|
logger log.Logger
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("exec", defaultEnabled, NewExecCollector)
|
|
}
|
|
|
|
// NewExecCollector returns a new Collector exposing system execution statistics.
|
|
func NewExecCollector(logger log.Logger) (Collector, error) {
|
|
// From sys/vm/vm_meter.c:
|
|
// All are of type CTLTYPE_UINT.
|
|
//
|
|
// vm.stats.sys.v_swtch: Context switches
|
|
// vm.stats.sys.v_trap: Traps
|
|
// vm.stats.sys.v_syscall: System calls
|
|
// vm.stats.sys.v_intr: Device interrupts
|
|
// vm.stats.sys.v_soft: Software interrupts
|
|
// vm.stats.vm.v_forks: Number of fork() calls
|
|
|
|
return &execCollector{
|
|
sysctls: []bsdSysctl{
|
|
{
|
|
name: "exec_context_switches_total",
|
|
description: "Context switches since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.sys.v_swtch",
|
|
},
|
|
{
|
|
name: "exec_traps_total",
|
|
description: "Traps since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.sys.v_trap",
|
|
},
|
|
{
|
|
name: "exec_system_calls_total",
|
|
description: "System calls since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.sys.v_syscall",
|
|
},
|
|
{
|
|
name: "exec_device_interrupts_total",
|
|
description: "Device interrupts since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.sys.v_intr",
|
|
},
|
|
{
|
|
name: "exec_software_interrupts_total",
|
|
description: "Software interrupts since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.sys.v_soft",
|
|
},
|
|
{
|
|
name: "exec_forks_total",
|
|
description: "Number of fork() calls since system boot. Resets at architecture unsigned integer.",
|
|
mib: "vm.stats.vm.v_forks",
|
|
},
|
|
},
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Update pushes exec statistics onto ch
|
|
func (c *execCollector) Update(ch chan<- prometheus.Metric) error {
|
|
for _, m := range c.sysctls {
|
|
v, err := m.Value()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
namespace+"_"+m.name,
|
|
m.description,
|
|
nil, nil,
|
|
), prometheus.CounterValue, v)
|
|
}
|
|
|
|
return nil
|
|
}
|