Add some sleep between each retry to set container's oom scroe

pkg/util/oom/oom_linux.go

@@ -25,6 +25,7 @@ import (
 	"path"
 	"path/filepath"
 	"strconv"
+	"time"
 
 	cmutil "k8s.io/kubernetes/pkg/kubelet/cm/util"
 
@@ -72,6 +73,7 @@ func applyOOMScoreAdj(pid int, oomScoreAdj int) error {
 			}
 
 			glog.V(3).Info(err)
+			time.Sleep(100 * time.Millisecond)
 			continue
 		}
 		return nil