From: "Toke Høiland-Jørgensen" <toke@toke.dk>
To: Dave Taht <dave.taht@gmail.com>
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 19:58:42 +0200 [thread overview]
Message-ID: <877ekfbq99.fsf@toke.dk> (raw)
In-Reply-To: <CAA93jw7jMfT-jnWWN_yrdbg+n59oaG78ctvT-CD6dPt76c7FZQ@mail.gmail.com>
Dave Taht <dave.taht@gmail.com> writes:
> 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
Think those were single-route tests, or close to it. Don't have results
handy for large routing tables for IPv6, but IPv4 performance drops by
~33% when going from a single route to a full BGP table dump...
Can run some tests for v6 once by testbed is running again...
-Toke
next prev parent reply other threads:[~2018-08-24 17:58 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
2018-08-24 17:58 ` Toke Høiland-Jørgensen [this message]
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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