Hi Team,

I found from grafana's panel, the total usage of cpu is less than 100%, you 
can see it from: 

https://user-images.githubusercontent.com/38067786/144542289-4d2f329d-8a11-43a2-bd62-8c2eb712af0b.png.
 

the metrics is:
sum(irate(node_cpu_seconds_total{instance="$host"}[30s])) by (mode) * 100 / 
count(node_cpu_seconds_total{instance="$host"}) by (mode)

But the command top shows the right cpu usage.

The whole info looks below: 

Host operating system: output of uname -a

4.18.0-305.10.2.el8_4.x86_64
node_exporter version: output of node_exporter --version

node_exporter, version 0.17.0 (branch: HEAD, revision: f6f6194 
<https://github.com/prometheus/node_exporter/commit/f6f6194a436b9a63d0439abc585c76b19a206b21>
)
build user: root@322511e06ced
build date: 20181130-15:51:33
go version: go1.11.2
node_exporter command line flags
#!/bin/bash set -e EXPORTER_BIN=bin/node_exporter/node_exporter if [ ! -f 
$EXPORTER_BIN ]; then EXPORTER_BIN=bin/node_exporter fi exec $EXPORTER_BIN 
\ --web.listen-address=":9100" \ --collector.tcpstat \ --collector.systemd 
\ --collector.mountstats \ --collector.meminfo_numa \ 
--collector.interrupts \ --collector.buddyinfo \ 
--collector.vmstat.fields="^.*" \ --log.level="info" 
Are you running node_exporter in Docker?

No
What did you do that produced an error?

the metrics is:
sum(irate(node_cpu_seconds_total{instance="$host"}[30s])) by (mode) * 100 / 
count(node_cpu_seconds_total{instance="$host"}) by (mode)

Nothing, just run some workload.
What did you expect to see?

The total usage of cpu should be 100%
What did you see instead?

Add these usage, we get the total cpu usage is 89% < 100%. I 
ran top command in a terminal, top's result is currect.


Best regards,

Wenbo

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