From: Rick Jones <rick.jones2@hp.com>
To: Dave Taht <dave.taht@gmail.com>
Cc: "Paolo Valente" <paolo.valente@unimore.it>,
"Toke Høiland-Jørgensen" <toke@toke.dk>,
"Eric Raymond" <esr@thyrsus.com>,
codel@lists.bufferbloat.net, cerowrt-devel@lists.bufferbloat.net,
bloat <bloat@lists.bufferbloat.net>,
paulmck@linux.vnet.ibm.com, "John Crispin" <blogic@openwrt.org>
Subject: Re: [Codel] FQ_Codel lwn draft article review
Date: Mon, 26 Nov 2012 13:13:54 -0800 [thread overview]
Message-ID: <50B3DB92.5070806@hp.com> (raw)
In-Reply-To: <CAA93jw6_p_aq3o-Jx3w1-j+OQOcU27P85VSYCDpTTEw3hAL1VQ@mail.gmail.com>
On 11/24/2012 08:19 AM, Dave Taht wrote:
> On Sat, Nov 24, 2012 at 1:07 AM, Toke Høiland-Jørgensen <toke@toke.dk> wrote:
>> "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> writes:
>> The UDP ping tests tend to not work so well on a loaded link,
>> however, since netperf stops sending packets after detecting
>> (excessive(?)) loss. Which is why you see only see the UDP ping times on
>> the first part of the graph.
>
> Netperf stops UDP_STREAM exchanges after the first lost udp packet.
The UDP_STREAM test will keep blasting along until the end-of-test timer
fires. It is the non-burst-mode UDP_RR test which comes to a halt on
the first lost datagram.
> After staring at the tons of data collected over the past year, on
> wifi, I'm willing to strongly suggest we just drop TCP packets after
> 500ms in the wifi stack, period, as that exceeds the round trip
> timeout...
How does WiFi "know" what the TCP RTO for a given flow happens to be?
There is no 500 millisecond ceiling on the TCP RTO.
rick jones
next prev parent reply other threads:[~2012-11-26 21:13 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAA93jw5yFvrOyXu2s2DY3oK_0v3OaNfnL+1zTteJodfxtAAzcQ@mail.gmail.com>
2012-11-23 8:57 ` Dave Taht
2012-11-23 22:18 ` Paul E. McKenney
2012-11-24 0:07 ` Toke Høiland-Jørgensen
2012-11-24 16:19 ` Dave Taht
2012-11-24 16:36 ` [Codel] [Cerowrt-devel] " dpreed
2012-11-24 19:57 ` [Codel] " Andrew McGregor
2012-11-26 21:13 ` Rick Jones [this message]
2012-11-26 21:19 ` Dave Taht
2012-11-26 22:16 ` Toke Høiland-Jørgensen
2012-11-26 23:21 ` Toke Høiland-Jørgensen
2012-11-26 23:39 ` [Codel] [Cerowrt-devel] " dpreed
2012-11-26 23:58 ` Toke Høiland-Jørgensen
2012-11-26 17:20 ` [Codel] " Paul E. McKenney
2012-11-26 21:05 ` Rick Jones
2012-11-26 23:18 ` [Codel] [Bloat] " Rick Jones
2012-11-27 22:03 ` [Codel] [Cerowrt-devel] " Jim Gettys
2012-11-27 22:31 ` [Codel] [Bloat] " David Lang
2012-11-27 22:54 ` Paul E. McKenney
2012-11-27 23:15 ` Andrew McGregor
2012-11-28 0:51 ` Paul E. McKenney
2012-11-28 17:36 ` Paul E. McKenney
2012-11-28 14:06 ` [Codel] [Cerowrt-devel] [Bloat] " Michael Richardson
2012-11-27 22:49 ` [Codel] [Cerowrt-devel] " Paul E. McKenney
2012-11-27 23:53 ` Greg White
2012-11-28 0:27 ` Paul E. McKenney
2012-11-28 3:43 ` Kathleen Nichols
2012-11-28 4:38 ` Paul E. McKenney
2012-11-28 16:01 ` Paul E. McKenney
2012-11-28 16:16 ` Jonathan Morton
2012-11-28 17:44 ` Paul E. McKenney
2012-11-28 18:37 ` [Codel] [Bloat] " Michael Richardson
2012-11-28 18:51 ` Eric Dumazet
2012-11-28 21:44 ` Michael Richardson
2012-11-28 19:00 ` Eric Dumazet
2012-12-02 21:37 ` Toke Høiland-Jørgensen
2012-12-02 21:47 ` Andrew McGregor
2012-12-03 8:04 ` Dave Taht
2012-12-02 22:07 ` Eric Dumazet
2012-12-02 22:15 ` Toke Høiland-Jørgensen
2012-12-02 22:30 ` Eric Dumazet
2012-12-02 22:51 ` Toke Høiland-Jørgensen
2012-11-28 17:20 ` [Codel] " Paul E. McKenney
2012-12-02 23:06 ` Paul E. McKenney
2012-12-03 11:24 ` Toke Høiland-Jørgensen
2012-12-03 11:31 ` Dave Taht
2012-12-03 12:54 ` Toke Høiland-Jørgensen
2012-12-03 14:58 ` Paul E. McKenney
2012-12-03 15:19 ` Toke Høiland-Jørgensen
2012-12-03 15:49 ` Eric Dumazet
2012-12-03 15:03 ` Paul E. McKenney
2012-12-03 15:58 ` David Woodhouse
2012-12-04 3:13 ` Dan Siemon
2012-12-05 0:01 ` Sebastian Moeller
[not found] ` <1354613026.72238.YahooMailNeo@web126202.mail.ne1.yahoo.com>
2012-12-05 3:41 ` [Codel] [Bloat] " Dan Siemon
[not found] ` <1354739624.4431.YahooMailNeo@web126205.mail.ne1.yahoo.com>
2012-12-06 4:12 ` Dan Siemon
2012-11-30 1:09 ` Dan Siemon
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