From: "Eggert, Lars" <lars@netapp.com>
To: Aaron Wood <woody77@gmail.com>
Cc: "cake@lists.bufferbloat.net" <cake@lists.bufferbloat.net>,
Greg White <g.white@cablelabs.com>,
"Klatsky, Carl" <Carl_Klatsky@cable.comcast.com>,
"cerowrt-devel@lists.bufferbloat.net"
<cerowrt-devel@lists.bufferbloat.net>,
bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Cake] [Bloat] [Cerowrt-devel] heisenbug: dslreports 16 flow test vs cablemodems
Date: Fri, 15 May 2015 08:18:23 +0000 [thread overview]
Message-ID: <8C015B1B-EFBA-4647-AD83-BAFDD16A4AF2@netapp.com> (raw)
In-Reply-To: <CALQXh-N04E_wJrAyB=qu3kR3cCUj2bmGjWLV+byp3eRFtPZqsw@mail.gmail.com>
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On 2015-5-15, at 06:44, Aaron Wood <woody77@gmail.com<mailto:woody77@gmail.com>> wrote:
ICMP prioritization over TCP?
Probably.
Ping in parallel to TCP is a hacky way to measure latencies; not only because of prioritization, but also because you don't measure TCP send/receive buffer latencies (and they can be large, auto-tuning is not so great.)
You really need to embed timestamps in the TCP bytestream and echo them back. See the recent netperf patch I sent.
Lars
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next prev parent reply other threads:[~2015-05-15 8:22 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 19:13 [Cake] " Dave Taht
2015-05-15 2:48 ` Greg White
2015-05-15 4:44 ` [Cake] [Cerowrt-devel] " Aaron Wood
2015-05-15 8:18 ` Eggert, Lars [this message]
2015-05-15 8:55 ` [Cake] [Cerowrt-devel] [Bloat] " Sebastian Moeller
2015-05-15 11:10 ` Alan Jenkins
2015-05-15 11:27 ` [Cake] [Bloat] [Cerowrt-devel] " Bill Ver Steeg (versteb)
2015-05-15 12:19 ` [Cake] [Cerowrt-devel] [Bloat] " Jonathan Morton
2015-05-15 12:44 ` [Cake] [Bloat] [Cerowrt-devel] " Eggert, Lars
2015-05-15 13:09 ` Bill Ver Steeg (versteb)
2015-05-15 13:35 ` Jim Gettys
2015-05-15 14:36 ` Simon Barber
2015-05-18 3:30 ` [Cake] [Cerowrt-devel] [Bloat] " dpreed
2015-05-18 5:06 ` Simon Barber
2015-05-18 9:06 ` Bill Ver Steeg (versteb)
2015-05-18 11:42 ` [Cake] [Bloat] [Cerowrt-devel] " Eggert, Lars
2015-05-18 11:57 ` luca.muscariello
2015-05-18 12:30 ` Simon Barber
2015-05-18 15:03 ` Jonathan Morton
2015-05-18 15:09 ` dpreed
2015-05-18 15:32 ` Simon Barber
2015-05-18 17:21 ` Dave Taht
2015-05-18 15:40 ` Jonathan Morton
2015-05-18 17:03 ` [Cake] [Cerowrt-devel] [Bloat] " Sebastian Moeller
2015-05-18 17:17 ` Jonathan Morton
2015-05-18 18:14 ` Sebastian Moeller
2015-05-18 18:37 ` [Cake] [Bloat] [Cerowrt-devel] " Dave Taht
2015-05-19 16:25 ` Sebastian Moeller
2015-05-19 16:58 ` Alan Jenkins
2015-05-15 16:59 ` [Cake] [Cerowrt-devel] [Bloat] " Dave Taht
2015-05-15 17:47 ` [Cake] " Dave Taht
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