From: Dave Taht <dave.taht@gmail.com>
To: Aaron Wood <woody77@gmail.com>
Cc: renaud sallantin <renaud.sallantin@gmail.com>,
bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] AQM creeping into L2 equipment
Date: Thu, 20 Mar 2014 13:23:08 -0700 [thread overview]
Message-ID: <CAA93jw4_M+w_3ZZpYNpQu55c44y7ccvKtTEzYEQotH1gcy+cWA@mail.gmail.com> (raw)
In-Reply-To: <CALQXh-MKEVrTJDn-qoA3R4byy1pxH7u0cQaH8j=U_=6HvAGi0A@mail.gmail.com>
On Thu, Mar 20, 2014 at 12:34 PM, Aaron Wood <woody77@gmail.com> wrote:
>> however what we are probably seeing with the measurement flows is
>> slow start causing a whole bunch of packets to be lost in a bunch.
>
>
> That would line up with the timing, and the periodic drops that I see in the
> flows when using Toke's newer wrapper (and netperf head), which attempt to
> work around the failing UDP timing flows.
Well there is some good work in linux 3.14 and beyond, and there was also
some interesting work on "initial spreading" presented at ietf.
Hopefully patches for this will be available soon.
http://tools.ietf.org/html/draft-sallantin-iccrg-initial-spreading-00
I would certainly like to be able to sanely measure the impact of
hundreds or thousands of flows in slow start, rather than/in addition to 8 flows
in congestion avoidance.
>
> -Aaron
--
Dave Täht
Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html
next prev parent reply other threads:[~2014-03-20 20:23 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-18 14:52 Steinar H. Gunderson
2014-03-18 17:17 ` Dave Taht
2014-03-18 17:53 ` Steinar H. Gunderson
2014-03-19 22:22 ` Steinar H. Gunderson
2014-03-18 18:05 ` Fred Baker (fred)
2014-03-18 18:54 ` Dave Taht
2014-03-20 16:20 ` Toke Høiland-Jørgensen
2014-03-20 16:29 ` Dave Taht
2014-03-20 16:44 ` Toke Høiland-Jørgensen
2014-03-20 17:14 ` Dave Taht
2014-03-20 19:34 ` Aaron Wood
2014-03-20 20:23 ` Dave Taht [this message]
2014-03-20 23:41 ` Eric Dumazet
2014-03-20 23:45 ` Steinar H. Gunderson
2014-03-20 23:54 ` Steinar H. Gunderson
[not found] ` <CAAvOmMtt1RCpBfT1MPNh-2FRhQ1GN4xYbfNPLYJwfP6CaP5vow@mail.gmail.com>
2014-03-21 15:06 ` Eric Dumazet
[not found] ` <CAAvOmMvPpmuW1chTdX86s5sQv6X_c622k8YrjW+hN8e5JV+dzA@mail.gmail.com>
2014-03-21 17:51 ` Eric Dumazet
2014-03-21 18:08 ` Dave Taht
2014-03-21 22:00 ` Eric Dumazet
2014-03-21 22:13 ` Dave Taht
2014-03-23 19:27 ` Eric Dumazet
2014-03-21 13:41 ` Toke Høiland-Jørgensen
2014-03-21 15:39 ` Dave Taht
2014-03-21 16:42 ` Steinar H. Gunderson
2014-03-21 18:34 ` Toke Høiland-Jørgensen
2014-03-24 23:16 ` David Lang
2014-03-20 18:16 ` [Bloat] AQM creeping into L2 equipment / 10G not-for-profit playground at tetaneutral.net Laurent GUERBY
2014-03-18 18:57 ` [Bloat] AQM creeping into L2 equipment Dave Taht
2014-03-18 21:06 ` Steinar H. Gunderson
2014-03-19 13:11 ` Nikolay Shopik
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