Browse Source
This exposes RAPL statistics from /sys/class/powercap. Co-Authored-By: Ben Kochie <superq@gmail.com> Signed-off-by: Ukri Niemimuukko <ukri.niemimuukko@intel.com>pull/1599/head
Ukri Niemimuukko
5 years ago
committed by
Johannes 'fish' Ziemke
7 changed files with 222 additions and 0 deletions
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// Copyright 2019 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !norapl
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package collector |
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import ( |
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"strconv" |
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"github.com/go-kit/kit/log" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/prometheus/procfs/sysfs" |
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) |
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type raplCollector struct { |
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fs sysfs.FS |
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} |
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func init() { |
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registerCollector("rapl", defaultEnabled, NewRaplCollector) |
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} |
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// NewRaplCollector returns a new Collector exposing RAPL metrics.
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func NewRaplCollector(logger log.Logger) (Collector, error) { |
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fs, err := sysfs.NewFS(*sysPath) |
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if err != nil { |
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return nil, err |
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} |
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collector := raplCollector{ |
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fs: fs, |
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} |
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return &collector, nil |
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} |
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// Update implements Collector and exposes RAPL related metrics.
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func (c *raplCollector) Update(ch chan<- prometheus.Metric) error { |
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// nil zones are fine when platform doesn't have powercap files present.
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zones, err := sysfs.GetRaplZones(c.fs) |
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if err != nil { |
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return nil |
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} |
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for _, rz := range zones { |
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newMicrojoules, err := rz.GetEnergyMicrojoules() |
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if err != nil { |
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return err |
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} |
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index := strconv.Itoa(rz.Index) |
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descriptor := prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, "rapl", rz.Name+"_joules_total"), |
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"Current RAPL "+rz.Name+" value in joules", |
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[]string{"index"}, nil, |
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) |
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ch <- prometheus.MustNewConstMetric( |
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descriptor, |
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prometheus.CounterValue, |
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float64(newMicrojoules)/1000000.0, |
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index, |
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) |
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} |
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return nil |
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} |
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