Merge pull request #1300 from sleepyzhang/fixCpuUsageComputationExcep…

…tion kernel bug lead to incorrect cpu usage
kubernetes-sigs · Jul 31, 2023 · 1693eb0 · 1693eb0
2 parents aea89d8 + 82a7323
commit 1693eb0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pkg/storage/types.go b/pkg/storage/types.go
@@ -51,6 +51,9 @@ type MetricsPoint struct {
 }
 
 func resourceUsage(last, prev MetricsPoint) (corev1.ResourceList, api.TimeInfo, error) {
+	if last.StartTime.Before(prev.StartTime) {
+		return corev1.ResourceList{}, api.TimeInfo{}, fmt.Errorf("unexpected decrease in startTime of node/container")
+	}
 	if last.CumulativeCpuUsed < prev.CumulativeCpuUsed {
 		return corev1.ResourceList{}, api.TimeInfo{}, fmt.Errorf("unexpected decrease in cumulative CPU usage value")
 	}