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feat: expose cpu frequency governor metrics #2569

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Merged
merged 2 commits into from
Mar 10, 2023
Merged

feat: expose cpu frequency governor metrics #2569

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3139113
feat: add support for cpu freq governor metrics
Mar 8, 2023
cb3bd87
feat: add support for cpu freq governor metrics
Mar 8, 2023
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11 changes: 8 additions & 3 deletions collector/cpufreq_common.go
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Original file line number Diff line number Diff line change
Expand Up @@ -23,17 +23,17 @@ import (
var (
cpuFreqHertzDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "frequency_hertz"),
"Current cpu thread frequency in hertz.",
"Current CPU thread frequency in hertz.",
[]string{"cpu"}, nil,
)
cpuFreqMinDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "frequency_min_hertz"),
"Minimum cpu thread frequency in hertz.",
"Minimum CPU thread frequency in hertz.",
[]string{"cpu"}, nil,
)
cpuFreqMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "frequency_max_hertz"),
"Maximum cpu thread frequency in hertz.",
"Maximum CPU thread frequency in hertz.",
[]string{"cpu"}, nil,
)
cpuFreqScalingFreqDesc = prometheus.NewDesc(
Expand All @@ -51,4 +51,9 @@ var (
"Maximum scaled CPU thread frequency in hertz.",
[]string{"cpu"}, nil,
)
cpuFreqScalingGovernorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "scaling_governor"),
"Current enabled CPU frequency governor.",
[]string{"cpu", "governor"}, nil,
)
)
18 changes: 17 additions & 1 deletion collector/cpufreq_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,10 +18,10 @@ package collector

import (
"fmt"

"github.com/go-kit/log"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/procfs/sysfs"
"strings"
)

type cpuFreqCollector struct {
Expand Down Expand Up @@ -104,6 +104,22 @@ func (c *cpuFreqCollector) Update(ch chan<- prometheus.Metric) error {
stats.Name,
)
}
if stats.Governor != "" {
availableGovernors := strings.Split(stats.AvailableGovernors, " ")
for _, g := range availableGovernors {
state := 0
if g == stats.Governor {
state = 1
}
ch <- prometheus.MustNewConstMetric(
cpuFreqScalingGovernorDesc,
prometheus.GaugeValue,
float64(state),
stats.Name,
g,
)
}
}
}
return nil
}
10 changes: 10 additions & 0 deletions collector/fixtures/e2e-64k-page-output.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -326,6 +326,16 @@ node_cpu_scaling_frequency_min_hertz{cpu="0"} 8e+08
node_cpu_scaling_frequency_min_hertz{cpu="1"} 8e+08
node_cpu_scaling_frequency_min_hertz{cpu="2"} 1e+06
node_cpu_scaling_frequency_min_hertz{cpu="3"} 1e+06
# HELP node_cpu_scaling_governor Current enabled CPU frequency governor.
# TYPE node_cpu_scaling_governor gauge
node_cpu_scaling_governor{cpu="0",governor="performance"} 0
node_cpu_scaling_governor{cpu="0",governor="powersave"} 1
node_cpu_scaling_governor{cpu="1",governor="performance"} 0
node_cpu_scaling_governor{cpu="1",governor="powersave"} 1
node_cpu_scaling_governor{cpu="2",governor="performance"} 0
node_cpu_scaling_governor{cpu="2",governor="powersave"} 1
node_cpu_scaling_governor{cpu="3",governor="performance"} 0
node_cpu_scaling_governor{cpu="3",governor="powersave"} 1
# HELP node_cpu_seconds_total Seconds the CPUs spent in each mode.
# TYPE node_cpu_seconds_total counter
node_cpu_seconds_total{cpu="0",mode="idle"} 10870.69
Expand Down
10 changes: 10 additions & 0 deletions collector/fixtures/e2e-output.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -348,6 +348,16 @@ node_cpu_scaling_frequency_min_hertz{cpu="0"} 8e+08
node_cpu_scaling_frequency_min_hertz{cpu="1"} 8e+08
node_cpu_scaling_frequency_min_hertz{cpu="2"} 1e+06
node_cpu_scaling_frequency_min_hertz{cpu="3"} 1e+06
# HELP node_cpu_scaling_governor Current enabled CPU frequency governor.
# TYPE node_cpu_scaling_governor gauge
node_cpu_scaling_governor{cpu="0",governor="performance"} 0
node_cpu_scaling_governor{cpu="0",governor="powersave"} 1
node_cpu_scaling_governor{cpu="1",governor="performance"} 0
node_cpu_scaling_governor{cpu="1",governor="powersave"} 1
node_cpu_scaling_governor{cpu="2",governor="performance"} 0
node_cpu_scaling_governor{cpu="2",governor="powersave"} 1
node_cpu_scaling_governor{cpu="3",governor="performance"} 0
node_cpu_scaling_governor{cpu="3",governor="powersave"} 1
# HELP node_cpu_seconds_total Seconds the CPUs spent in each mode.
# TYPE node_cpu_seconds_total counter
node_cpu_seconds_total{cpu="0",mode="idle"} 10870.69
Expand Down