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add metrics for process stats

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Tested on a COS VM:

```
$ curl -s localhost:20257/metrics | grep "^system_"
system_interrupts_total{kernel_version="5.4.49+",os_version="cos 85-13310.1041.24"} 8.759236e+07
system_processes_total{kernel_version="5.4.49+",os_version="cos 85-13310.1041.24"} 692506
system_procs_blocked{kernel_version="5.4.49+",os_version="cos 85-13310.1041.24"} 0
system_procs_running{kernel_version="5.4.49+",os_version="cos 85-13310.1041.24"} 2
```
This commit is contained in:
Karan Goel
2021-01-13 09:14:08 -08:00
parent b951f24297
commit 71098097c0
7 changed files with 132 additions and 8 deletions
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pkg/util/metrics/metric.go
+4
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@@ -42,6 +42,10 @@ const (
MemoryUnevictableUsedID MetricID = "memory/unevictable_used"
MemoryDirtyUsedID MetricID = "memory/dirty_used"
OSFeatureID MetricID = "system/os_feature"
SystemProcessesTotal MetricID = "system/processes_total"
SystemProcsRunning MetricID = "system/procs_running"
SystemProcsBlocked MetricID = "system/procs_blocked"
SystemInterruptsTotal MetricID = "system/interrupts_total"
)
var MetricMap MetricMapping