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metrics: fix the panic for reading empty cpu stats (#21864)

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gary rong 2020-11-19 04:50:11 +08:00 committed by GitHub
parent 23524f8900
commit b9ff57c59e
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1 changed files with 4 additions and 0 deletions
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4
metrics/cpu_enabled.go
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@ -31,6 +31,10 @@ func ReadCPUStats(stats *CPUStats) {
log.Error("Could not read cpu stats", "err", err)
return
}
if len(timeStats) == 0 {
log.Error("Empty cpu stats")
return
}
// requesting all cpu times will always return an array with only one time stats entry
timeStat := timeStats[0]
stats.GlobalTime = int64((timeStat.User + timeStat.Nice + timeStat.System) * cpu.ClocksPerSec)