Re: [RFC] napi: limit GRO latency

David Miller
2012-10-08T19:10:38Z

From: Stephen Hemminger <shemminger@vyatta.com>
Date: Mon, 8 Oct 2012 11:58:35 -0700

> Limit the latency of pending GRO in NAPI processing to 2*HZ.
> When the system is under heavy network load, NAPI will go into
> poll mode via soft irq, and only stay in the loop for
> two jiffies. If this occurs, process the GRO pending list
> to make sure and not delay outstanding TCP frames for too long.
>
> Rearrange the exit path to get rid of unnecessary goto logic.
>
> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>

Did you see Eric's patch I just applied which limits it to 1ms?