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

2020-11-19 04:50:11 +08:00 · 2020-11-19 04:50:11 +08:00 · b9ff57c59e
parent 23524f8900
commit b9ff57c59e
1 changed files with 4 additions and 0 deletions
--- a/metrics/cpu_enabled.go
+++ b/metrics/cpu_enabled.go
@ -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)