Network graph in VM metric panel is fix at 1Bps and when Generate load to 1KiB/s the graph cannot show line of traffic

4.16.4

Create vm and load test traffic to it

1. Create VM
2. Install some httpd 
3. Create route, service to the VM's pod
4. Use loop curl to generate traffic to the application in the VM

the network metric graph not show line of traffic 

the network metric graph show line of traffic