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From: Haiqing Jiang <hqjiang1988@gmail.com>
To: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
Cc: "end2end-interest@postel.org" <end2end-interest@postel.org>,
	"bloat@lists.bufferbloat.net" <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] bufferbloat paper
Date: Fri, 18 Jan 2013 14:00:33 -0800	[thread overview]
Message-ID: <CAO-4OdG+iL3xG-nHZj+9r3nxXiBca7RxLXLOkcibkhSMvtxwOQ@mail.gmail.com> (raw)
In-Reply-To: <81564C0D7D4D2A4B9A86C8C7404A13DA0801AF@ESESSMB205.ericsson.se>

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Hi

It's really happy to know that you are verifying the problem I pointed out
in my paper. It's quite urgent to pay more attentions to the bufferbloat in
CellNet in my opinion.

But because of the lack of connections inside carriers (AT&T, Verizon,
etc.), in my work I still found some limitations to figure out the
fundamental answers to 1). where the buffers exactly are; 2). how the
buffers are built up with interacting with LTE/HSPA/EVDO protocols; 3). how
common it is for large scale daily life usage the problem could lower down
user experiences..... All those problems, I hope to see deeper discussions
in this maillist. Thanks....

Best,
Haiqing Jiang

On Mon, Jan 7, 2013 at 11:35 PM, Ingemar Johansson S <
ingemar.s.johansson@ericsson.com> wrote:

> Hi
>
> Include Mark's original post (below) as it was scrubbed
>
> I don't have an data of bufferbloat for wireline access and the fiber
> connection that I have at home shows little evidence of bufferbloat.
>
> Wireless access seems to be a different story though.
> After reading the "Tackling Bufferbloat in 3G/4G Mobile Networks" by Jiang
> et al. I decided to make a few measurements of my own (hope that the
> attached png is not removed)
>
> The measurement setup was quite simple, a Laptop with Ubuntu 12.04 with a
> 3G modem attached.
> The throughput was computed from the wireshark logs and RTT was measured
> with ping (towards a webserver hosted by Akamai). The location is Luleå
> city centre, Sweden (fixed locations) and the measurement was made at
> lunchtime on Dec 6 2012 .
>
> During the measurement session I did some close to normal websurf,
> including watching embedded videoclips and youtube. In some cases the
> effects of bufferbloat was clearly noticeable.
> Admit that this is just one sample, a more elaborate study with more
> samples would be interesting to see.
>
> 3G has the interesting feature that packets are very seldom lost in
> downlink (data going to the terminal). I did not see a single packet loss
> in this test!. I wont elaborate on the reasons in this email.
> I would however believe that LTE is better off in this respect as long as
> AQM is implemented, mainly because LTE is a packet-switched architecture.
>
> /Ingemar
>
> Marks post.
> ********
> [I tried to post this in a couple places to ensure I hit folks who would
>  be interested.  If you end up with multiple copies of the email, my
>  apologies.  --allman]
>
> I know bufferbloat has been an interest of lots of folks recently.  So,
> I thought I'd flog a recent paper that presents a little data on the
> topic ...
>
>     Mark Allman.  Comments on Bufferbloat, ACM SIGCOMM Computer
>     Communication Review, 43(1), January 2013.
>     http://www.icir.org/mallman/papers/bufferbloat-ccr13.pdf
>
> Its an initial paper.  I think more data would be great!
>
> allman
>
>
> --
> http://www.icir.org/mallman/
>
>
>
>
>
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
>


-- 
-----------------------------------
Haiqing Jiang,
Computer Science Department, North Carolina State University
Homepage:  https://sites.google.com/site/hqjiang1988/

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  parent reply	other threads:[~2013-01-18 22:00 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-08  7:35 Ingemar Johansson S
2013-01-08 10:42 ` [Bloat] [e2e] " Keith Winstein
2013-01-08 12:19   ` Ingemar Johansson S
2013-01-08 12:44     ` Keith Winstein
2013-01-08 13:19       ` Ingemar Johansson S
2013-01-08 15:29         ` dpreed
2013-01-08 16:40           ` Mark Allman
2013-01-09 14:07   ` Michael Richardson
2013-01-10  7:37     ` Keith Winstein
2013-01-10 13:46       ` Michael Richardson
2013-01-08 15:04 ` dpreed
2013-01-18 22:00 ` Haiqing Jiang [this message]
     [not found] <87r4lvgss4.fsf@toke.dk>
2013-01-09  3:39 ` [Bloat] Bufferbloat Paper Mark Allman
2013-01-09  5:02   ` David Lang
2013-01-18  1:23     ` grenville armitage
  -- strict thread matches above, loose matches on Subject: below --
2013-01-08 19:03 [Bloat] bufferbloat paper Hal Murray
2013-01-08 20:28 ` Jonathan Morton
2013-01-09  0:12 ` David Lang
2013-01-09  1:59   ` Mark Allman
2013-01-09  4:53     ` David Lang
2013-01-09  5:13       ` Jonathan Morton
2013-01-09  5:32       ` Mark Allman
2013-01-07 23:37 [Bloat] Bufferbloat Paper Hagen Paul Pfeifer
2013-01-08  0:33 ` Dave Taht
2013-01-08  0:40   ` David Lang
2013-01-08  2:04   ` Mark Watson
2013-01-08  2:24     ` David Lang
2013-01-09 20:08       ` Michael Richardson
2013-01-08  4:52     ` Mark Watson
2013-01-08  1:54 ` Stephen Hemminger
2013-01-08  2:15   ` Oliver Hohlfeld
2013-01-08 12:44   ` Toke Høiland-Jørgensen
2013-01-08 13:55     ` Mark Allman
2013-01-09  0:03       ` David Lang
2013-01-10 13:01         ` Mark Allman
2013-01-09 20:14       ` Michael Richardson
2013-01-09 20:19         ` Mark Allman
2013-01-09 20:31           ` Michael Richardson
2013-01-10 18:05             ` Mark Allman
2013-01-08 14:04     ` Mark Allman
2013-01-08 17:22   ` Dave Taht
2013-01-09 20:05 ` Michael Richardson
2013-01-09 20:14   ` Mark Allman

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