mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-09 23:24:09 -08:00
exposing softirq metrics (#2294)
Signed-off-by: abbeywoodyear <abbey.woodyear@thehutgroup.com>
This commit is contained in:
Abbey Woodyear
GitHub
parent
df1b53bee2
commit
eaacb2e3c7
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@ -197,6 +197,7 @@ perf | Exposes perf based metrics (Warning: Metrics are dependent on kernel conf
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processes | Exposes aggregate process statistics from `/proc`. | Linux
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qdisc | Exposes [queuing discipline](https://en.wikipedia.org/wiki/Network_scheduler#Linux_kernel) statistics | Linux
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slabinfo | Exposes slab statistics from `/proc/slabinfo`. Note that permission of `/proc/slabinfo` is usually 0400, so set it appropriately. | Linux
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softirqs | Exposes detailed softirq statistics from `/proc/softirqs`. | Linux
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sysctl | Expose sysctl values from `/proc/sys`. Use `--collector.sysctl.include(-info)` to configure. | Linux
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systemd | Exposes service and system status from [systemd](http://www.freedesktop.org/wiki/Software/systemd/). | Linux
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tcpstat | Exposes TCP connection status information from `/proc/net/tcp` and `/proc/net/tcp6`. (Warning: the current version has potential performance issues in high load situations.) | Linux
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@ -2922,6 +2922,7 @@ node_scrape_collector_success{collector="schedstat"} 1
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node_scrape_collector_success{collector="selinux"} 1
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node_scrape_collector_success{collector="slabinfo"} 1
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node_scrape_collector_success{collector="sockstat"} 1
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node_scrape_collector_success{collector="softirqs"} 1
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node_scrape_collector_success{collector="softnet"} 1
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node_scrape_collector_success{collector="stat"} 1
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node_scrape_collector_success{collector="sysctl"} 1
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@ -3028,6 +3029,28 @@ node_sockstat_UDP_mem_bytes 0
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# HELP node_sockstat_sockets_used Number of IPv4 sockets in use.
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# TYPE node_sockstat_sockets_used gauge
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node_sockstat_sockets_used 229
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# HELP node_softirqs_functions_total Softirq counts per CPU.
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# TYPE node_softirqs_functions_total counter
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node_softirqs_functions_total{cpu="0",type="BLOCK"} 23776
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node_softirqs_functions_total{cpu="0",type="HI"} 7
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node_softirqs_functions_total{cpu="0",type="HRTIMER"} 40
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node_softirqs_functions_total{cpu="0",type="IRQ_POLL"} 0
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node_softirqs_functions_total{cpu="0",type="NET_RX"} 43066
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node_softirqs_functions_total{cpu="0",type="NET_TX"} 2301
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node_softirqs_functions_total{cpu="0",type="RCU"} 155929
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node_softirqs_functions_total{cpu="0",type="SCHED"} 378895
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node_softirqs_functions_total{cpu="0",type="TASKLET"} 372
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node_softirqs_functions_total{cpu="0",type="TIMER"} 424191
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node_softirqs_functions_total{cpu="1",type="BLOCK"} 24115
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node_softirqs_functions_total{cpu="1",type="HI"} 1
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node_softirqs_functions_total{cpu="1",type="HRTIMER"} 346
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node_softirqs_functions_total{cpu="1",type="IRQ_POLL"} 0
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node_softirqs_functions_total{cpu="1",type="NET_RX"} 104508
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node_softirqs_functions_total{cpu="1",type="NET_TX"} 2430
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node_softirqs_functions_total{cpu="1",type="RCU"} 146631
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node_softirqs_functions_total{cpu="1",type="SCHED"} 152852
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node_softirqs_functions_total{cpu="1",type="TASKLET"} 1899
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node_softirqs_functions_total{cpu="1",type="TIMER"} 108342
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# HELP node_softirqs_total Number of softirq calls.
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# TYPE node_softirqs_total counter
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node_softirqs_total{vector="block"} 186066
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@ -2944,6 +2944,7 @@ node_scrape_collector_success{collector="schedstat"} 1
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node_scrape_collector_success{collector="selinux"} 1
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node_scrape_collector_success{collector="slabinfo"} 1
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node_scrape_collector_success{collector="sockstat"} 1
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node_scrape_collector_success{collector="softirqs"} 1
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node_scrape_collector_success{collector="softnet"} 1
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node_scrape_collector_success{collector="stat"} 1
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node_scrape_collector_success{collector="sysctl"} 1
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@ -3050,6 +3051,28 @@ node_sockstat_UDP_mem_bytes 0
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# HELP node_sockstat_sockets_used Number of IPv4 sockets in use.
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# TYPE node_sockstat_sockets_used gauge
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node_sockstat_sockets_used 229
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# HELP node_softirqs_functions_total Softirq counts per CPU.
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# TYPE node_softirqs_functions_total counter
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node_softirqs_functions_total{cpu="0",type="BLOCK"} 23776
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node_softirqs_functions_total{cpu="0",type="HI"} 7
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node_softirqs_functions_total{cpu="0",type="HRTIMER"} 40
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node_softirqs_functions_total{cpu="0",type="IRQ_POLL"} 0
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node_softirqs_functions_total{cpu="0",type="NET_RX"} 43066
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node_softirqs_functions_total{cpu="0",type="NET_TX"} 2301
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node_softirqs_functions_total{cpu="0",type="RCU"} 155929
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node_softirqs_functions_total{cpu="0",type="SCHED"} 378895
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node_softirqs_functions_total{cpu="0",type="TASKLET"} 372
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node_softirqs_functions_total{cpu="0",type="TIMER"} 424191
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node_softirqs_functions_total{cpu="1",type="BLOCK"} 24115
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node_softirqs_functions_total{cpu="1",type="HI"} 1
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node_softirqs_functions_total{cpu="1",type="HRTIMER"} 346
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node_softirqs_functions_total{cpu="1",type="IRQ_POLL"} 0
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node_softirqs_functions_total{cpu="1",type="NET_RX"} 104508
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node_softirqs_functions_total{cpu="1",type="NET_TX"} 2430
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node_softirqs_functions_total{cpu="1",type="RCU"} 146631
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node_softirqs_functions_total{cpu="1",type="SCHED"} 152852
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node_softirqs_functions_total{cpu="1",type="TASKLET"} 1899
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node_softirqs_functions_total{cpu="1",type="TIMER"} 108342
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# HELP node_softirqs_total Number of softirq calls.
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# TYPE node_softirqs_total counter
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node_softirqs_total{vector="block"} 186066
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11
collector/fixtures/proc/softirqs
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11
collector/fixtures/proc/softirqs
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@ -0,0 +1,11 @@
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CPU0 CPU1
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HI: 7 1
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TIMER: 424191 108342
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NET_TX: 2301 2430
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NET_RX: 43066 104508
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BLOCK: 23776 24115
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IRQ_POLL: 0 0
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TASKLET: 372 1899
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SCHED: 378895 152852
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HRTIMER: 40 346
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RCU: 155929 146631
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68
collector/softirq_linux.go
Normal file
68
collector/softirq_linux.go
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@ -0,0 +1,68 @@
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// Copyright 2023 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 !nosoftirqs
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// +build !nosoftirqs
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package collector
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import (
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"fmt"
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"strconv"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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softirqLabelNames = []string{"cpu", "type"}
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)
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func (c *softirqsCollector) Update(ch chan<- prometheus.Metric) (err error) {
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softirqs, err := c.fs.Softirqs()
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if err != nil {
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return fmt.Errorf("couldn't get softirqs: %w", err)
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}
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for cpuNo, value := range softirqs.Hi {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "HI")
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}
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for cpuNo, value := range softirqs.Timer {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "TIMER")
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}
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for cpuNo, value := range softirqs.NetTx {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "NET_TX")
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}
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for cpuNo, value := range softirqs.NetRx {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "NET_RX")
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}
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for cpuNo, value := range softirqs.Block {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "BLOCK")
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}
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for cpuNo, value := range softirqs.IRQPoll {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "IRQ_POLL")
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}
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for cpuNo, value := range softirqs.Tasklet {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "TASKLET")
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}
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for cpuNo, value := range softirqs.Sched {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "SCHED")
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}
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for cpuNo, value := range softirqs.HRTimer {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "HRTIMER")
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}
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for cpuNo, value := range softirqs.RCU {
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ch <- c.desc.mustNewConstMetric(float64(value), strconv.Itoa(cpuNo), "RCU")
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}
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return err
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}
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50
collector/softirqs_common.go
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50
collector/softirqs_common.go
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@ -0,0 +1,50 @@
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// Copyright 2023 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 linux && !nosoftirqs
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// +build linux,!nosoftirqs
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package collector
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import (
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"fmt"
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"github.com/go-kit/log"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/procfs"
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)
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type softirqsCollector struct {
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fs procfs.FS
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desc typedDesc
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logger log.Logger
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}
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func init() {
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registerCollector("softirqs", defaultDisabled, NewSoftirqsCollector)
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}
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// NewSoftirqsCollector returns a new Collector exposing softirq stats.
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func NewSoftirqsCollector(logger log.Logger) (Collector, error) {
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desc := typedDesc{prometheus.NewDesc(
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namespace+"_softirqs_functions_total",
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"Softirq counts per CPU.",
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softirqLabelNames, nil,
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), prometheus.CounterValue}
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fs, err := procfs.NewFS(*procPath)
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if err != nil {
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return nil, fmt.Errorf("failed to open procfs: %w", err)
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}
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return &softirqsCollector{fs, desc, logger}, nil
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}
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@ -42,6 +42,7 @@ enabled_collectors=$(cat << COLLECTORS
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selinux
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slabinfo
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sockstat
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softirqs
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stat
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sysctl
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textfile
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