From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from eu1sys200aog113.obsmtp.com (eu1sys200aog113.obsmtp.com [207.126.144.135]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id 93AC7201044 for ; Sat, 7 Apr 2012 13:27:30 -0700 (PDT) Received: from mail.la.pnsol.com ([89.145.213.110]) (using TLSv1) by eu1sys200aob113.postini.com ([207.126.147.11]) with SMTP ID DSNKT4CjLwIR/saX+WofNLjpSbFKm1ShlNkz@postini.com; Sat, 07 Apr 2012 20:27:30 UTC Received: from [172.20.5.166] by mail.la.pnsol.com with esmtp (Exim 4.63) (envelope-from ) id 1SGcEI-000409-VU; Sat, 07 Apr 2012 21:27:26 +0100 Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: text/plain; charset=iso-8859-1 From: Neil Davies In-Reply-To: Date: Sat, 7 Apr 2012 21:27:27 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <2442E8BD-D0B1-4403-AB30-57FC536A34C5@pnsol.com> References: <20120406213725.GA12641@uio.no> <20120406222138.GB12641@uio.no> <1333811327.30705.4.camel@edumazet-laptop> To: Dave Taht X-Mailer: Apple Mail (2.1257) Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] Best practices for paced TCP on Linux? X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Apr 2012 20:27:31 -0000 Fred thinking on this more the 'g' (the function of RTT) is something like = 'min' - on the assumption that the path doesn't change during the = transfer - that represents the immutable part of the end-to-end delay, = the 'inflight' buffering. Neil On 7 Apr 2012, at 16:25, Dave Taht wrote: > The test HD tcp stream is up at >=20 > http://cesur.tg12.gathering.org:9094/ >=20 > on both ipv6 and ipv4. They are streaming anywhere up to 1000 users, > and there is an astounding amount of ipv6 present - 73% of the room > has an ipv6 address. >=20 > I took some captures from california last night, they were > interesting. I think a few more captures would also be interesting. >=20 > One indicated throttling at the isp at t+60 seconds, the others showed > stuff dropping out for large periods of time. (170ms rtt here!) >=20 > I'd like to look into what percentage of the failures I observed > happened on the wifi hop vs the ethernet gateway > since then many changes where made, and I'm low on sleep. (what do > geeks do on a friday night?) >=20 > I don't know if they are still trying sfqred or qfq in production - > they worked! - but had little effect (as is to be kind of expected > with the instantaneous queue length being so short and bandwidth so > high on their first and nearest hops....) > On Sat, Apr 7, 2012 at 8:08 AM, Eric Dumazet = wrote: >> Le samedi 07 avril 2012 =E0 00:21 +0200, Steinar H. Gunderson a =E9crit= : >>=20 >>> I'll be perfectly happy just doing _something_; I don't need a = perfect >>> solution. We have one more night of streaming, and then the event is = over. :-) >=20 >=20 > --=20 > Dave T=E4ht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://www.bufferbloat.net > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat