On 09/20/2018 04:43 PM, Song Liu wrote: > > I tried to totally skip ndo_poll_controller() here. It did avoid hitting > the issue. However, netpoll will drop (fail to send) more packets. > Why is it failing ? If you are under high memory pressure, then maybe if you absolutely want memory to send netpoll packets, you want to grab all NAPI contexts as a way to prevent other cpus from feeding incoming packets to the host and add more memory pressure ;)
