62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
// Copyright 2019 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.
|
|
|
|
package procfs
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/prometheus/procfs/internal/util"
|
|
)
|
|
|
|
// LoadAvg represents an entry in /proc/loadavg.
|
|
type LoadAvg struct {
|
|
Load1 float64
|
|
Load5 float64
|
|
Load15 float64
|
|
}
|
|
|
|
// LoadAvg returns loadavg from /proc.
|
|
func (fs FS) LoadAvg() (*LoadAvg, error) {
|
|
path := fs.proc.Path("loadavg")
|
|
|
|
data, err := util.ReadFileNoStat(path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return parseLoad(data)
|
|
}
|
|
|
|
// Parse /proc loadavg and return 1m, 5m and 15m.
|
|
func parseLoad(loadavgBytes []byte) (*LoadAvg, error) {
|
|
loads := make([]float64, 3)
|
|
parts := strings.Fields(string(loadavgBytes))
|
|
if len(parts) < 3 {
|
|
return nil, fmt.Errorf("%w: Malformed line %q", ErrFileParse, string(loadavgBytes))
|
|
}
|
|
|
|
var err error
|
|
for i, load := range parts[0:3] {
|
|
loads[i], err = strconv.ParseFloat(load, 64)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("%s: Cannot parse load: %f: %w", ErrFileParse, loads[i], err)
|
|
}
|
|
}
|
|
return &LoadAvg{
|
|
Load1: loads[0],
|
|
Load5: loads[1],
|
|
Load15: loads[2],
|
|
}, nil
|
|
}
|