From: Jesper Dangaard Brouer <brouer@redhat.com>
To: "İbrahim Ercan" <ibrahim.metu@gmail.com>
Cc: xdp-newbies@vger.kernel.org, David Ahern <dsahern@gmail.com>,
brouer@redhat.com
Subject: Re: ethtool isn't showing xdp statistics
Date: Wed, 12 Jun 2019 09:53:23 +0200 [thread overview]
Message-ID: <20190612095323.620c0791@carbon> (raw)
In-Reply-To: <CAK6Qs9kbWdRSer1LTz53BunJkvpQaa02YExen65Tha3HpGrW+w@mail.gmail.com>
On Wed, 12 Jun 2019 09:57:02 +0300 İbrahim Ercan <ibrahim.metu@gmail.com> wrote:
> I removed bridge and did same tests again. Unfortunately result is
> same :/
I sort of expected that, as the ethtool "rx_missed_errors" counter
says, that packets are dropped inside the NIC, before reaching Linux.
Something more fundamental is wrong with your setup.
You mentioned there was a switch between the machines in your lab. One
possibility is that the switch is somehow corrupting the frames before
the reach the NIC, e.g. in these overload DDoS scenarios. Try to
remove the switch from the equation (by directly connecting machine
back-to-back), to identify where the pitfall is...
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2019-06-12 7:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 9:55 ethtool isn't showing xdp statistics İbrahim Ercan
2019-06-10 10:15 ` Jesper Dangaard Brouer
2019-06-11 9:18 ` İbrahim Ercan
2019-06-11 10:42 ` Jesper Dangaard Brouer
2019-06-11 13:18 ` İbrahim Ercan
2019-06-11 14:45 ` Jesper Dangaard Brouer
2019-06-12 6:57 ` İbrahim Ercan
2019-06-12 7:53 ` Jesper Dangaard Brouer [this message]
2019-06-12 8:59 ` İbrahim Ercan
2019-06-13 13:02 ` İbrahim Ercan
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