diff --git a/internal/nodes/node_status_executor.go b/internal/nodes/node_status_executor.go
index 4532d5a..f048dcf 100644
--- a/internal/nodes/node_status_executor.go
+++ b/internal/nodes/node_status_executor.go
@@ -108,7 +108,7 @@ func (this *NodeStatusExecutor) updateCPU(status *nodeconfigs.NodeStatus) {
 	}
 	status.CPUUsage = percents[0] / 100
 
-	if time.Since(this.cpuUpdatedTime) > 300*time.Second { // 每隔5分钟才会更新一次
+	if this.cpuLogicalCount == 0 && this.cpuPhysicalCount == 0 {
 		this.cpuUpdatedTime = time.Now()
 
 		status.CPULogicalCount, err = cpu.Counts(true)
diff --git a/internal/nodes/node_status_executor_test.go b/internal/nodes/node_status_executor_test.go
index 56ff6ae..13f755f 100644
--- a/internal/nodes/node_status_executor_test.go
+++ b/internal/nodes/node_status_executor_test.go
@@ -19,7 +19,7 @@ func TestNodeStatusExecutor_CPU(t *testing.T) {
 	}
 	t.Log("physical count:", countPhysicalCPU)
 
-	percents, err := cpu.Percent(100 * time.Millisecond, false)
+	percents, err := cpu.Percent(100*time.Millisecond, false)
 	if err != nil {
 		t.Fatal(err)
 	}