Re: Dropped packets mapping IRQs for adjusted queue counts on i40e

On Sat, May 1, 2021 at 11:26 PM Zvi Effron <[email protected]> wrote:
>
> On Sat, May 1, 2021 at 8:23 AM T K Sourabh <[email protected]> wrote:
> >
> > When we turned off irqbalance service, we would not see the issue as they were messing up the affinities.
> >
> > Another thing to ensure:  equal number of queues on both interfaces.
> >
> Thanks for the info, it does give me some areas to investigate.
>
> We already have irqbalance turned off (uninstalled, actually), and
> we're using the same number of queues on each device (we get the
> number of queues by taking the number of cores divided by number of
> interfaces).
>
> I am wondering if not having the matching queues for the ingress
> interface and egress interface on the same cores might be a
> contributing factor?
I haven't tested but you could give it a try to see if packet drop happens.
>
>
> --Zvi