mirror of
https://github.com/prometheus/node_exporter.git
synced 2025-08-20 18:33:52 -07:00
119 lines
3.9 KiB
Go
119 lines
3.9 KiB
Go
// Copyright 2025 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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//go:build !nopartition
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// +build !nopartition
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package collector
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import (
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"log/slog"
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"github.com/power-devops/perfstat"
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"github.com/prometheus/client_golang/prometheus"
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)
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type partitionCollector struct {
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logger *slog.Logger
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entitledCapacity *prometheus.Desc
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memoryMax *prometheus.Desc
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memoryOnline *prometheus.Desc
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cpuOnline *prometheus.Desc
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cpuSys *prometheus.Desc
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cpuPool *prometheus.Desc
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powerSaveMode *prometheus.Desc
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smtThreads *prometheus.Desc
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}
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const (
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partitionCollectorSubsystem = "partition"
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)
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func init() {
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registerCollector("partition", defaultEnabled, NewPartitionCollector)
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}
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func NewPartitionCollector(logger *slog.Logger) (Collector, error) {
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return &partitionCollector{
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logger: logger,
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entitledCapacity: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "entitled_capacity"),
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"Entitled processor capacity of the partition in CPU units (e.g. 1.0 = one core).",
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nil, nil,
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),
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memoryMax: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "memory_max"),
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"Maximum memory of the partition in bytes.",
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nil, nil,
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),
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memoryOnline: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "memory_online"),
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"Online memory of the partition in bytes.",
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nil, nil,
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),
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cpuOnline: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "cpus_online"),
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"Number of online CPUs in the partition.",
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nil, nil,
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),
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cpuSys: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "cpus_sys"),
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"Number of physical CPUs in the system.",
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nil, nil,
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),
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cpuPool: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "cpus_pool"),
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"Number of physical CPUs in the pool.",
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nil, nil,
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),
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powerSaveMode: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "power_save_mode"),
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"Power save mode of the partition (1 for enabled, 0 for disabled).",
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nil, nil,
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),
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smtThreads: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, partitionCollectorSubsystem, "smt_threads"),
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"Number of SMT threads per core.",
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nil, nil,
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),
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}, nil
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}
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func (c *partitionCollector) Update(ch chan<- prometheus.Metric) error {
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stats, err := perfstat.PartitionStat()
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if err != nil {
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return err
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}
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powerSaveMode := 0.0
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if stats.Conf.PowerSave {
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powerSaveMode = 1.0
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}
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ch <- prometheus.MustNewConstMetric(c.entitledCapacity, prometheus.GaugeValue, float64(stats.EntCapacity)/100.0)
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ch <- prometheus.MustNewConstMetric(c.memoryMax, prometheus.GaugeValue, float64(stats.Mem.Max)*1024*1024)
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ch <- prometheus.MustNewConstMetric(c.memoryOnline, prometheus.GaugeValue, float64(stats.Mem.Online)*1024*1024)
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ch <- prometheus.MustNewConstMetric(c.cpuOnline, prometheus.GaugeValue, float64(stats.VCpus.Online))
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ch <- prometheus.MustNewConstMetric(c.cpuSys, prometheus.GaugeValue, float64(stats.NumProcessors.Online))
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ch <- prometheus.MustNewConstMetric(c.cpuPool, prometheus.GaugeValue, float64(stats.ActiveCpusInPool))
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ch <- prometheus.MustNewConstMetric(c.powerSaveMode, prometheus.GaugeValue, powerSaveMode)
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ch <- prometheus.MustNewConstMetric(c.smtThreads, prometheus.GaugeValue, float64(stats.SmtThreads))
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return nil
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}
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