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Fixed CPU Usage chart in grafana dashboard (#21568)

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ref
https://linear.app/ghost/issue/ENG-1505/start-monitoring-ghosts-constraints-and-our-3-goals-using-prometheus

- Using `irate` for aggregating CPU usage was resulting in some strange
behavior — the CPU Usage chart would zero out after a few mins of
running. Switching to regular `rate` seems to have fixed the issue
completely.
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Chris Raible 2024-11-07 10:18:41 -08:00 committed by GitHub
parent 5138ef8ed3
commit 8aba92e444
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1 changed files with 3 additions and 3 deletions
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6
.github/scripts/grafana/dashboards/main-dashboard.json vendored
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@ -312,19 +312,19 @@
"steppedLine": false,
"targets": [
{
"expr": "irate(ghost_process_cpu_user_seconds_total{job=~\"$job\"}[1m]) * 100",
"expr": "rate(ghost_process_cpu_user_seconds_total{job=~\"$job\"}[1m]) * 100",
"interval": "",
"legendFormat": "User CPU - {{job}}",
"refId": "A"
},
{
"expr": "irate(ghost_process_cpu_system_seconds_total{job=~\"$job\"}[1m]) * 100",
"expr": "rate(ghost_process_cpu_system_seconds_total{job=~\"$job\"}[1m]) * 100",
"interval": "",
"legendFormat": "System CPU - {{job}}",
"refId": "B"
},
{
"expr": "irate(ghost_process_cpu_seconds_total{job=~\"$job\"}[1m]) * 100",
"expr": "rate(ghost_process_cpu_seconds_total{job=~\"$job\"}[1m]) * 100",
"interval": "",
"legendFormat": "Total CPU - {{job}}",
"refId": "C"