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From: T K Sourabh <sourabhtk37@gmail.com>
To: Zvi Effron <zeffron@riotgames.com>
Cc: Xdp <xdp-newbies@vger.kernel.org>
Subject: Re: Dropped packets mapping IRQs for adjusted queue counts on i40e
Date: Mon, 3 May 2021 01:46:25 +0530	[thread overview]
Message-ID: <CADS2XXptoyPTBObKgp3gcRZnWzoVyZrC26tDpLWhC9YrGMSefw@mail.gmail.com> (raw)
In-Reply-To: <CAC1LvL2Q=s8pmwKAh2615fsTFEETKp96jpoLJS+75=0ztwuLFQ@mail.gmail.com>

On Sat, May 1, 2021 at 11:26 PM Zvi Effron <zeffron@riotgames.com> wrote:
>
> On Sat, May 1, 2021 at 8:23 AM T K Sourabh <sourabhtk37@gmail.com> 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

  reply	other threads:[~2021-05-02 20:16 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-01  0:45 Dropped packets mapping IRQs for adjusted queue counts on i40e Zvi Effron
     [not found] ` <CADS2XXpjasmJKP__oHsrvv3EG8n-FjB6sqHwgQfh7QgeJ8GrrQ@mail.gmail.com>
2021-05-01 17:56   ` Zvi Effron
2021-05-02 20:16     ` T K Sourabh [this message]
2021-05-04 23:07       ` Zvi Effron
2021-05-05 18:55         ` Zvi Effron
2021-05-05 19:53           ` Zvi Effron
2021-05-05 19:55           ` David Ahern
2021-05-05 20:01           ` Jesse Brandeburg
2021-05-05 21:21             ` Maciej Fijalkowski
2021-05-05 21:21               ` [Intel-wired-lan] " Maciej Fijalkowski
2021-05-06 10:29               ` Toke Høiland-Jørgensen
2021-05-06 10:29                 ` [Intel-wired-lan] " Toke =?unknown-8bit?q?H=C3=B8iland-J=C3=B8rgensen?=
2021-05-09 15:50                 ` Maciej Fijalkowski
2021-05-09 15:50                   ` [Intel-wired-lan] " Maciej Fijalkowski
2021-05-10 11:22                   ` Toke Høiland-Jørgensen
2021-05-10 11:22                     ` [Intel-wired-lan] " Toke =?unknown-8bit?q?H=C3=B8iland-J=C3=B8rgensen?=
2021-05-10 15:01                     ` Jesper Dangaard Brouer
2021-05-10 15:01                       ` [Intel-wired-lan] " Jesper Dangaard Brouer

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