From: Rick Jones <rick.jones2@hp.com>
To: Dave Taht <dave.taht@gmail.com>
Cc: codel@lists.bufferbloat.net, bloat@lists.bufferbloat.net
Subject: Re: [Codel] Exploring the potential of codel, fq_codel, and qfq
Date: Wed, 16 May 2012 10:33:19 -0700 [thread overview]
Message-ID: <4FB3E4DF.3000605@hp.com> (raw)
In-Reply-To: <CAA93jw5Yb+wSb0vCBrH6x+ED87z4qWi6t1OdZ6ws4KQhbOn25Q@mail.gmail.com>
On 05/16/2012 12:20 AM, Dave Taht wrote:
> After running those numbers I tried pure codel with ecn and with noecn
> just to verify results, against the 50 streams.
>
> of note: I was unable to duplicate the initial 120ms
> spike I saw. Definately more tests and more rigorous testing is needed.
>
> All tests were against v13 of the code.
>
> codel ecn off, you get an initial spike of about 30ms, then it settles
> down in this range.
>
> 64 bytes from 149.20.63.18: icmp_req=19 ttl=64 time=4.62 ms
> 64 bytes from 149.20.63.18: icmp_req=20 ttl=64 time=2.06 ms
> 64 bytes from 149.20.63.18: icmp_req=21 ttl=64 time=4.28 ms
> 64 bytes from 149.20.63.18: icmp_req=22 ttl=64 time=1.03 ms
> 64 bytes from 149.20.63.18: icmp_req=23 ttl=64 time=8.11 ms
> 64 bytes from 149.20.63.18: icmp_req=24 ttl=64 time=5.10 ms
>
> TCP_RR is: 112.69
>
> With ecn:
>
> 64 bytes from 149.20.63.18: icmp_req=46 ttl=64 time=10.6 ms
> 64 bytes from 149.20.63.18: icmp_req=47 ttl=64 time=5.66 ms
> 64 bytes from 149.20.63.18: icmp_req=48 ttl=64 time=11.8 ms
> 64 bytes from 149.20.63.18: icmp_req=49 ttl=64 time=3.68 ms
> 64 bytes from 149.20.63.18: icmp_req=50 ttl=64 time=10.2 ms
> 64 bytes from 149.20.63.18: icmp_req=51 ttl=64 time=12.8 ms
> 64 bytes from 149.20.63.18: icmp_req=52 ttl=64 time=2.62 ms
> 64 bytes from 149.20.63.18: icmp_req=53 ttl=64 time=7.86 ms
>
> TCP_RR: 102
>
> All of these sets of results need more rigor attached.
FWIW, netperf can report the number of retransmissions it saw on the
data connection (when running on Linux). That is enabled via the omni
output selection and the local_transport_retrans and
remote_transport_retrans output selectors.
rick jones
next prev parent reply other threads:[~2012-05-16 17:33 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-09 1:04 [Codel] The challenge Dave Taht
2012-05-09 2:02 ` [Codel] [Bloat] " Kevin Gross
2012-05-09 3:13 ` [Codel] " Kathleen Nichols
2012-05-09 3:56 ` Dave Taht
2012-05-09 5:16 ` [Codel] [Bloat] " Simon Barber
2012-05-09 5:40 ` Eric Dumazet
2012-05-09 5:41 ` Dave Taht
2012-05-09 7:32 ` [Codel] [codel] some numbers on dual 10Gb links Eric Dumazet
2012-05-09 13:04 ` [Codel] [Bloat] The challenge Kevin Gross
2012-05-16 5:55 ` Jonathan Morton
2012-05-16 6:09 ` Eric Dumazet
2012-05-16 7:05 ` [Codel] Exploring the potential of codel, fq_codel, and qfq dave taht
2012-05-16 7:20 ` Dave Taht
2012-05-16 7:42 ` [Codel] [Bloat] " Eric Dumazet
2012-05-16 7:46 ` Eric Dumazet
2012-05-16 8:17 ` Eric Dumazet
2012-05-16 9:02 ` Jonathan Morton
2012-05-16 9:14 ` Eric Dumazet
2012-05-16 9:31 ` Jonathan Morton
2012-05-16 9:37 ` Eric Dumazet
2012-05-16 9:59 ` Jonathan Morton
2012-05-16 10:10 ` Eric Dumazet
2012-05-16 13:58 ` Eric Dumazet
2012-05-16 17:40 ` Rick Jones
2012-05-16 17:53 ` Eric Dumazet
2012-05-16 17:33 ` Rick Jones [this message]
2012-05-16 17:48 ` Eric Dumazet
2012-05-16 6:09 ` [Codel] [Bloat] The challenge Dave Taht
2012-05-16 6:31 ` Eric Dumazet
2012-05-16 8:15 ` Jonathan Morton
2012-05-09 19:10 ` Roger Jørgensen
2012-05-09 19:15 ` Dave Taht
2012-05-09 19:28 ` Dave Taht
2012-05-09 20:02 ` Simon Barber
2012-05-09 20:06 ` Fred Baker
2012-05-09 21:47 ` Jim Gettys
2012-05-09 23:58 ` Eric Dumazet
2012-05-10 2:34 ` Jonathan Morton
2012-05-10 2:37 ` Dave Taht
2012-05-10 6:35 ` David Woodhouse
2012-05-10 6:54 ` Jonathan Morton
2012-05-10 7:02 ` David Woodhouse
2012-05-10 14:25 ` Justin McCann
2012-05-10 14:42 ` David Woodhouse
2012-05-10 15:34 ` Neil Davies
2012-05-10 21:20 ` Jim Gettys
2012-05-14 7:27 ` Jonathan Morton
2012-05-14 7:34 ` Eric Dumazet
2012-05-14 13:55 ` David Woodhouse
2012-05-18 20:56 ` [Codel] [Bloat] Linux-able modems Jonathan Morton
2012-05-18 21:36 ` Dave Taht
2012-05-18 22:34 ` Dave Taht
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