General list for discussing Bufferbloat
 help / color / mirror / Atom feed
* Re: [Bloat] bufferbloat paper
@ 2013-01-08 19:03 Hal Murray
  2013-01-08 20:28 ` Jonathan Morton
  2013-01-09  0:12 ` David Lang
  0 siblings, 2 replies; 36+ messages in thread
From: Hal Murray @ 2013-01-08 19:03 UTC (permalink / raw)
  To: bloat; +Cc: Hal Murray


> Aside from their dataset having absolutely no reflection on the reality of
> the 99.999% of home users running at speeds two or three or *more* orders of
> magnitude below that speed, it seems like a nice paper. 

Did any of their 90 homes contained laptops connected over WiFi? 


> Here is a plot (also at http://web.mit.edu/keithw/www/verizondown.png) from
> a computer tethered to a Samsung Galaxy Nexus running Android 4.0.4 on
> Verizon LTE service, taken just now in Cambridge, Mass. 

Neat.  Thanks.

Any ideas on what happened at 120 seconds?  Is that a pattern I should 
recognize?

Is there an event that triggers it?  Is it something as simple as a single 
lost packet?



-- 
These are my opinions.  I hate spam.




^ permalink raw reply	[flat|nested] 36+ messages in thread
* Re: [Bloat] bufferbloat paper
@ 2013-01-08  7:35 Ingemar Johansson S
  2013-01-18 22:00 ` Haiqing Jiang
  0 siblings, 1 reply; 36+ messages in thread
From: Ingemar Johansson S @ 2013-01-08  7:35 UTC (permalink / raw)
  To: end2end-interest, bloat

[-- Attachment #1: Type: text/plain, Size: 2083 bytes --]

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/





[-- Attachment #2: Bufferbloat-3G.png --]
[-- Type: image/png, Size: 267208 bytes --]

^ permalink raw reply	[flat|nested] 36+ messages in thread
* [Bloat] Bufferbloat Paper
@ 2013-01-07 23:37 Hagen Paul Pfeifer
  2013-01-08  0:33 ` Dave Taht
                   ` (2 more replies)
  0 siblings, 3 replies; 36+ messages in thread
From: Hagen Paul Pfeifer @ 2013-01-07 23:37 UTC (permalink / raw)
  To: bloat


FYI: "Comments on Bufferbloat" paper from Mark Allman


http://www.icir.org/mallman/papers/bufferbloat-ccr13.pdf


Cheers, Hagen


^ permalink raw reply	[flat|nested] 36+ messages in thread

end of thread, other threads:[~2013-01-18 23:16 UTC | newest]

Thread overview: 36+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [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
2013-01-17 14:03   ` [Bloat] Passive RTT measurements [was: Re: Bufferbloat Paper] Simon Leinen
2013-01-17 14:08     ` Simon Leinen
2013-01-18 23:16     ` Hagen Paul Pfeifer
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
  -- strict thread matches above, loose matches on Subject: below --
2013-01-08  7:35 Ingemar Johansson S
2013-01-18 22:00 ` Haiqing Jiang
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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox