From: Dave Taht <dave.taht@gmail.com>
To: "Jonas Mårtensson" <martensson.jonas@gmail.com>
Cc: "Bless, Roland (TM)" <roland.bless@kit.edu>,
bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] Fwd: [Bug 1436945] Re: devel: consider fq_codel as the default qdisc for networking
Date: Mon, 4 Jun 2018 10:08:52 -0700 [thread overview]
Message-ID: <CAA93jw4zj4oDSJRR0C=hGigJ0NxMp3P4gOA-4mum_hNuwX_Dew@mail.gmail.com> (raw)
In-Reply-To: <CAM9iV=Ksh7R=Cxfje=AOkE=EW9aXyBvez_V=3yLYg3=Vn4UYpw@mail.gmail.com>
On Mon, Jun 4, 2018 at 6:16 AM, Jonas Mårtensson
<martensson.jonas@gmail.com> wrote:
>
>
> On Mon, Jun 4, 2018 at 1:28 PM, Bless, Roland (TM) <roland.bless@kit.edu>
> wrote:
>>
>> Hi,
>>
>> Am 24.05.2018 um 17:38 schrieb Jan Ceuleers:
>> > Took 3 years after Dave approached them, but Ubuntu is finally adopting
>> > fq_codel as the default qdisc.
>>
>> Yes, if the Linux kernel is forwarding packets it makes a lot of sense,
>> but I don't understand why it make sense for ordinary end-systems.
>> Didn't Byte Queue Limits (BQL) suffice? Just curious...
>
>
> Actually, for a long time now the codel wiki has recommended using sch_fq
> instead of fq_codel for servers.
That recommendation predates the tcp pacing change you note below.
I'm pretty convinced fq_codel is now the best all around "default"
qdisc, and we should rework our recomendation.
> It seems Ubuntu defaulting to fq_codel is a result of using systemd which
> adopted it as default almost 4 years ago. There was a request to change the
> default in systemd from fq_codel to sch_fq in order to support pacing but
> the issue was closed when tcp internal pacing was introduced in linux 4.13:
>
> https://github.com/systemd/systemd/issues/5090
>
> /Jonas
>
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
--
Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619
next prev parent reply other threads:[~2018-06-04 17:08 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <152717340941.28154.812883711295847116.malone@soybean.canonical.com>
2018-05-24 15:38 ` Jan Ceuleers
2018-06-04 11:28 ` Bless, Roland (TM)
2018-06-04 13:16 ` Jonas Mårtensson
2018-06-04 17:08 ` Dave Taht [this message]
2018-06-04 18:22 ` Jonas Mårtensson
2018-06-04 21:36 ` Jonathan Morton
2018-06-05 15:10 ` [Bloat] " Jonathan Foulkes
2018-06-05 17:24 ` Jonathan Morton
2018-06-05 18:34 ` Sebastian Moeller
2018-06-05 19:31 ` Jonathan Morton
2018-06-06 6:53 ` Sebastian Moeller
2018-06-06 13:04 ` Jonathan Morton
2018-06-12 6:39 ` Dave Taht
2018-06-12 6:47 ` Dave Taht
2018-08-11 19:17 ` Dave Taht
2018-08-13 22:29 ` [Bloat] ecn redux Dave Taht
2018-06-06 7:44 ` [Bloat] [Bug 1436945] Re: devel: consider fq_codel as the default qdisc for networking Bless, Roland (TM)
2018-06-06 8:15 ` Sebastian Moeller
2018-06-06 8:55 ` Mario Hock
2018-06-05 0:22 ` [Bloat] Fwd: " Michael Richardson
2018-06-05 6:21 ` Jonas Mårtensson
2018-06-06 4:14 ` Mikael Abrahamsson
2018-06-07 12:56 ` [Bloat] Fwd: [Bug 1436945] -> What other options/bufferbloat-advice ... ? Simon Iremonger (bufferbloat)
2018-06-04 23:00 ` [Bloat] Fwd: [Bug 1436945] Re: devel: consider fq_codel as the default qdisc for networking David Lang
2018-06-05 7:44 ` Mario Hock
2018-06-05 7:49 ` Jonathan Morton
2018-06-05 11:01 ` Mario Hock
2018-08-16 21:08 ` Dave Taht
[not found] <20150708105006.4232.80615.launchpad@gac.canonical.com>
2015-07-08 13:00 ` Jan Ceuleers
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