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From: Dave Taht <dave.taht@gmail.com>
To: "Toke Høiland-Jørgensen" <toke@toke.dk>
Cc: Mikael Abrahamsson <swmike@swm.pp.se>,
	bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] [Cerowrt-devel] beating the drum for BQL
Date: Fri, 24 Aug 2018 07:44:07 -0700	[thread overview]
Message-ID: <CAA93jw7jMfT-jnWWN_yrdbg+n59oaG78ctvT-CD6dPt76c7FZQ@mail.gmail.com> (raw)
In-Reply-To: <87a7pcbxvl.fsf@toke.dk>

On Thu, Aug 23, 2018 at 2:01 PM Toke Høiland-Jørgensen <toke@toke.dk> wrote:
>
> Dave Taht <dave.taht@gmail.com> writes:
>
> > One of the things not readily evident in trying to scale up, is the
> > cost of even the most basic routing table lookup. A lot of good work
> > in this area landed in linux 4.1 and 4.2 (see a couple posts here:
> > https://vincent.bernat.im/en/blog/2017-performance-progression-ipv4-route-lookup-linux
> > )
> >
> > Lookup time for even the smallest number of routes is absolutely
> > miserable for IPv6 -
> > https://vincent.bernat.im/en/blog/2017-ipv6-route-lookup-linux
>
> The IPv6 routing lookup is on par with v4 these days. We got 7.2M pkts/s
> in our XDP tests on a single core (although admittedly a fairly high-end
> Intel one). Which allows you to route 10Gbps of 64-byte packets on two
> cores...

Call me cynical, call me grumpy...

but did you get that result with testing 1,10,100,1000, 10,000, 100k,
1M routes? The best
case performance on that test looked like .150us, the worst case 1.75us
> -Toke



-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619

  reply	other threads:[~2018-08-24 14:41 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-23  0:49 [Bloat] " Dave Taht
2018-08-23  5:47 ` Mikael Abrahamsson
2018-08-23 13:06   ` [Bloat] [Cerowrt-devel] " Sebastian Moeller
2018-08-23 13:57     ` Jan Ceuleers
2018-08-23 14:22       ` Sebastian Moeller
2018-08-23 15:32         ` Mikael Abrahamsson
2018-08-23 17:14           ` Rosen Penev
2018-08-23 17:50             ` Mikael Abrahamsson
2018-08-23 18:21               ` Dave Taht
2018-08-23 20:15                 ` Dave Taht
2018-08-24  7:00                   ` Mikael Abrahamsson
2018-08-24  8:06                     ` Dave Taht
2018-08-24 11:22                       ` Toke Høiland-Jørgensen
2018-08-24 11:46                       ` Jan Ceuleers
2018-08-24 13:43                         ` Jan Ceuleers
2018-08-24 13:44                           ` Mikael Abrahamsson
2018-08-24 13:56                             ` Jan Ceuleers
2018-08-24 13:36                       ` Mikael Abrahamsson
2018-08-24  7:05                   ` Mikael Abrahamsson
2018-08-24 11:24                     ` Toke Høiland-Jørgensen
2018-08-23 21:01                 ` Toke Høiland-Jørgensen
2018-08-24 14:44                   ` Dave Taht [this message]
2018-08-24 17:58                     ` Toke Høiland-Jørgensen
2018-08-23 23:35           ` Sebastian Moeller
2018-08-24  1:08             ` David Collier-Brown
2018-08-24  6:16             ` Jan Ceuleers
2018-08-24 11:27           ` Toke Høiland-Jørgensen
2018-08-24 12:46             ` Pedro Tumusok
2018-08-24 13:09             ` Michael Richardson
2018-08-24 13:37             ` Mikael Abrahamsson
2018-08-24 13:44               ` Toke Høiland-Jørgensen
2018-08-26  4:29           ` [Bloat] Marvell 385 Dave Taht
2018-08-26  4:32             ` Jonathan Morton
2018-08-26 16:28             ` Rosen Penev
2018-08-26 18:44             ` Mikael Abrahamsson
2018-08-26 20:53               ` Dave Taht
2018-08-26 20:58               ` Rosen Penev
2018-08-26 21:08                 ` Dave Taht
2018-08-27  0:55                   ` Rosen Penev
2018-08-27  1:21                     ` Dave Taht
2018-08-27  1:33                       ` Rosen Penev
2018-08-27  1:45                         ` Dave Taht
2018-08-27  1:53                           ` Rosen Penev
2018-08-27 11:33                   ` Mikael Abrahamsson
2018-08-23  8:26 ` [Bloat] beating the drum for BQL Pete Heist
2018-08-23 10:51   ` Mikael Abrahamsson
2018-08-23 11:38     ` Pete Heist
2018-08-24 17:13   ` Pete Heist
2018-08-24 17:30     ` Dave Taht
2018-08-24 18:43       ` Dave Taht

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