From: d@taht.net (Dave Täht)
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: bloat@lists.bufferbloat.net
Subject: Re: [Bloat] Taxonomy of various sender-side TCPs
Date: Fri, 11 Mar 2011 11:05:18 -0700 [thread overview]
Message-ID: <878vwlr0rl.fsf@cruithne.co.teklibre.org> (raw)
In-Reply-To: <20110311092157.23dea5e8@nehalam> (Stephen Hemminger's message of "Fri, 11 Mar 2011 09:21:57 -0800")
Stephen Hemminger <shemminger@vyatta.com> writes:
> On Fri, 11 Mar 2011 09:24:33 +0200
> Jonathan Morton <chromatix99@gmail.com> wrote:
>> Currently, CUBIC is the default TCP send-side algorithm in Linux. It
>> seems likely that it will react correctly to ECN marking, but that a
>> higher rate of marking may be needed to bring it down to a given
>> buffering level. From what I've read, SFB should be able to probe
>> for the correct marking rate on a per-flow basis, which is nice.
>>
>> On the subject of ECN, my impression is that YouTube currently
>> doesn't enable it, but a one-man company I recently downloaded some
>> stuff from does. I wonder if there's any reliable data on how many
>> of the most popular sites enable ECN if you ask for it. Personally,
>> I think IPv6 and ECN should probably go together - v6 gear is new or
>> upgraded anyway so there shouldn't be any legacy problems.
I agree, but lack data. What TCP algorithms are available in the IPv6
stack on Linux? I know SFB works with both ipv4 and ipv6...
ECN has been enabled on kernel org for 8+ years.
>
> Even TCP window scaling is problematic. Many consumer bits of gear are seriously
> broken. I have had to turn off WS on my laptop to deal with hotel and conference
> wireless front ends.
Good tip.
--
Dave Taht
http://nex-6.taht.net
next prev parent reply other threads:[~2011-03-11 18:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-11 7:24 Jonathan Morton
2011-03-11 17:21 ` Stephen Hemminger
2011-03-11 17:57 ` Dave Täht
2011-03-11 18:07 ` Jonathan Morton
2011-03-11 18:12 ` Dave Täht
2011-03-11 18:25 ` Erica Han
2011-03-11 19:10 ` Dave Hart
2011-03-11 19:25 ` Jonathan Morton
2011-03-11 20:34 ` Erica Han
2011-03-11 20:46 ` Jonathan Morton
2011-03-11 22:20 ` Stephen Hemminger
2011-03-12 0:13 ` Jonathan Morton
2011-03-12 0:18 ` Stephen Hemminger
2011-03-11 18:00 ` Jonathan Morton
2011-03-11 18:10 ` Dave Täht
2011-03-11 18:05 ` Dave Täht [this message]
2011-03-11 18:21 ` Jonathan Morton
2011-03-11 18:31 ` Dave Täht
[not found] ` <2231D7DC-D58A-41F8-8A06-05FF4EEA0EA5@nokia.com>
2011-03-14 13:55 ` [Bloat] FW: [Iccrg] Fwd: " Narasimha Reddy
2011-03-23 16:20 ` [Bloat] " Daniel Baluta
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.bufferbloat.net/postorius/lists/bloat.lists.bufferbloat.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=878vwlr0rl.fsf@cruithne.co.teklibre.org \
--to=d@taht.net \
--cc=bloat@lists.bufferbloat.net \
--cc=shemminger@vyatta.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox