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Fix Linux cpu errors (#606)

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Make the Linux cpu collector soft-error on missing `cpufreq` and
`thermal_throttle` features.
This commit is contained in:
Ben Kochie 2017-06-20 07:51:26 +02:00 committed by GitHub
parent be6291adde
commit 182810056f
7 changed files with 38 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
collector/cpu_linux.go
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@ -17,9 +17,11 @@ package collector
import (
"fmt"
"os"
"path/filepath"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
"github.com/prometheus/procfs"
)
@ -99,6 +101,9 @@ func (c *cpuCollector) updateCPUfreq(ch chan<- prometheus.Metric) error {
for _, cpu := range cpus {
_, cpuname := filepath.Split(cpu)
if _, err := os.Stat(filepath.Join(cpu, "cpufreq")); os.IsNotExist(err) {
log.Debugf("CPU %q is missing cpufreq", cpu)
} else {
if value, err = readUintFromFile(filepath.Join(cpu, "cpufreq/scaling_cur_freq")); err != nil {
return err
}
@ -113,7 +118,11 @@ func (c *cpuCollector) updateCPUfreq(ch chan<- prometheus.Metric) error {
return err
}
ch <- prometheus.MustNewConstMetric(c.cpuFreqMax, prometheus.GaugeValue, float64(value), cpuname)
}
if _, err := os.Stat(filepath.Join(cpu, "thermal_throttle")); os.IsNotExist(err) {
log.Debugf("CPU %q is missing thermal_throttle", cpu)
} else {
if value, err = readUintFromFile(filepath.Join(cpu, "thermal_throttle/core_throttle_count")); err != nil {
return err
}
@ -124,6 +133,7 @@ func (c *cpuCollector) updateCPUfreq(ch chan<- prometheus.Metric) error {
}
ch <- prometheus.MustNewConstMetric(c.cpuPackageThrottle, prometheus.CounterValue, float64(value), cpuname)
}
}
return nil
}

5
collector/fixtures/e2e-output.txt
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@ -212,22 +212,27 @@ node_cpu{cpu="cpu7",mode="user"} 290.98
# TYPE node_cpu_core_throttles_total counter
node_cpu_core_throttles_total{cpu="cpu0"} 5
node_cpu_core_throttles_total{cpu="cpu1"} 0
node_cpu_core_throttles_total{cpu="cpu2"} 40
# HELP node_cpu_frequency_hertz Current cpu thread frequency in hertz.
# TYPE node_cpu_frequency_hertz gauge
node_cpu_frequency_hertz{cpu="cpu0"} 1.699981e+06
node_cpu_frequency_hertz{cpu="cpu1"} 1.699981e+06
node_cpu_frequency_hertz{cpu="cpu3"} 8000
# HELP node_cpu_frequency_max_hertz Maximum cpu thread frequency in hertz.
# TYPE node_cpu_frequency_max_hertz gauge
node_cpu_frequency_max_hertz{cpu="cpu0"} 3.7e+06
node_cpu_frequency_max_hertz{cpu="cpu1"} 3.7e+06
node_cpu_frequency_max_hertz{cpu="cpu3"} 4.2e+06
# HELP node_cpu_frequency_min_hertz Minimum cpu thread frequency in hertz.
# TYPE node_cpu_frequency_min_hertz gauge
node_cpu_frequency_min_hertz{cpu="cpu0"} 800000
node_cpu_frequency_min_hertz{cpu="cpu1"} 800000
node_cpu_frequency_min_hertz{cpu="cpu3"} 1000
# HELP node_cpu_package_throttles_total Number of times this cpu package has been throttled.
# TYPE node_cpu_package_throttles_total counter
node_cpu_package_throttles_total{cpu="cpu0"} 30
node_cpu_package_throttles_total{cpu="cpu1"} 30
node_cpu_package_throttles_total{cpu="cpu2"} 6
# HELP node_disk_bytes_read The total number of bytes read successfully.
# TYPE node_disk_bytes_read counter
node_disk_bytes_read{device="dm-0"} 5.13708655616e+11

1
collector/fixtures/sys/bus/cpu/devices/cpu2/thermal_throttle/core_throttle_count Normal file
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@ -0,0 +1 @@
40

1
collector/fixtures/sys/bus/cpu/devices/cpu2/thermal_throttle/package_throttle_count Normal file
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@ -0,0 +1 @@
6

1
collector/fixtures/sys/bus/cpu/devices/cpu3/cpufreq/scaling_cur_freq Normal file
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@ -0,0 +1 @@
8000

1
collector/fixtures/sys/bus/cpu/devices/cpu3/cpufreq/scaling_max_freq Normal file
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@ -0,0 +1 @@
4200000

1
collector/fixtures/sys/bus/cpu/devices/cpu3/cpufreq/scaling_min_freq Normal file
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@ -0,0 +1 @@
1000