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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: "xdp-newbies@vger.kernel.org" <xdp-newbies@vger.kernel.org>,
	"John Fastabend" <john.fastabend@gmail.com>,
	"Daniel Borkmann" <borkmann@iogearbox.net>,
	"Andy Gospodarek" <andy@greyhouse.net>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"Paweł Staszewski" <pstaszewski@itcare.pl>
Subject: Re: XDP redirect measurements, gotchas and tracepoints
Date: Mon, 21 Aug 2017 15:35:42 -0700	[thread overview]
Message-ID: <20170821223540.atktdricmks26c27@ast-mbp> (raw)
In-Reply-To: <20170821212506.1cb0d5d6@redhat.com>

On Mon, Aug 21, 2017 at 09:25:06PM +0200, Jesper Dangaard Brouer wrote:
> 
> Third gotcha(3): You got this far, loaded xdp on both interfaces, and
> notice now that (with default setup) you can RX with 14Mpps but only
> TX with 6.9Mpps (and might have 5% idle cycles).  I debugged this via
> perf tracepoint event xdp:xdp_redirect, and found this was due to
> overrunning the xdp TX ring-queue size.

we should probably fix this somehow.
Once tx-ing netdev added to devmap we can enable xdp on it automatically?

  reply	other threads:[~2017-08-21 22:35 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-21 19:25 XDP redirect measurements, gotchas and tracepoints Jesper Dangaard Brouer
2017-08-21 22:35 ` Alexei Starovoitov [this message]
2017-08-22  6:37   ` Jesper Dangaard Brouer
2017-08-22 17:09     ` Alexei Starovoitov
2017-08-22 17:17       ` John Fastabend
2017-08-23  8:56         ` Jesper Dangaard Brouer
2017-08-22 18:02 ` Michael Chan
2017-08-22 18:17   ` John Fastabend
2017-08-22 18:30     ` Duyck, Alexander H
2017-08-22 20:04       ` Michael Chan
2017-08-23  1:06         ` Alexander Duyck
2017-08-23  6:59           ` Michael Chan
2017-08-23  8:29             ` Jesper Dangaard Brouer
2017-08-25  3:36               ` Michael Chan
2017-08-25 12:45                 ` Jesper Dangaard Brouer
2017-08-25 15:10                   ` John Fastabend
2017-08-25 15:28                     ` Michael Chan
2017-08-28 16:02                       ` Andy Gospodarek
2017-08-28 16:11                         ` Alexander Duyck
2017-08-29 13:26                           ` Jesper Dangaard Brouer
2017-08-29 16:23                             ` Alexander Duyck
2017-08-29 19:02                               ` Andy Gospodarek
2017-08-29 19:52                                 ` Alexander Duyck
2017-08-28 16:14                         ` John Fastabend
2017-08-28 19:39                           ` Andy Gospodarek
2017-08-23 14:51             ` Alexander Duyck

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