From: Oliver Hohlfeld <oliver@net.t-labs.tu-berlin.de>
To: "tsvwg@ietf.org" <tsvwg@ietf.org>, bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] [tsvwg] how much of a problem is buffer bloat today?
Date: Thu, 21 Mar 2013 19:14:03 +0100 [thread overview]
Message-ID: <514B4DEB.3020402@net.t-labs.tu-berlin.de> (raw)
In-Reply-To: <CAGhGL2Cu6m-s_6SyZPMGm0ebXjn4_wbftNcY519v11Lk3CvaJg@mail.gmail.com>
> I believe you are actually measuring the *fraction of the time* your
> measurements show bad latency
Yes.
> The best data I've seen on how widespread the problem is is the ICSI
> Netalyzr scatter plots results
One has to be extremely careful on what to conclude from this data.
The Netalyzr data shows that bloated buffers _exist_, not that they
are _used_ in practice. Or as Mark has put it: "[it] shows that large
delays due to buffering can happen, not that they do happen."
Empirical evidence cited in my previous mail suggests that buffer
bloat does not happen often.
> I encourage everyone to run netalyzr and/or the mlabs tests for
> bufferbloat on your own broadband connections, or do simple copy and
> ping tests inside your own house over wifi to your local file servers....
While this will identify bloated buffers, it does not help in answering
what fraction of Internet users actually experience the problem.
Oliver
next prev parent reply other threads:[~2013-03-21 18:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <51408BF4.7090304@cisco.com>
[not found] ` <8C48B86A895913448548E6D15DA7553B7D020F@xmb-rcd-x09.cisco.com>
2013-03-21 17:50 ` Oliver Hohlfeld
2013-03-21 18:01 ` Jim Gettys
2013-03-21 18:14 ` Oliver Hohlfeld [this message]
2013-03-21 18:28 ` Jim Gettys
2013-03-21 18:36 ` Dave Taht
2013-03-21 19:08 ` Oliver Hohlfeld
2013-03-21 19:25 ` Mikael Abrahamsson
2013-03-21 20:05 ` Jim Gettys
2013-03-22 4:27 ` Mikael Abrahamsson
2013-03-22 6:00 ` [Bloat] [aqm] " grenville armitage
2013-03-22 13:23 ` Mikael Abrahamsson
2013-03-22 13:31 ` Dave Taht
2013-03-26 17:25 ` Mirja Kuehlewind
2013-03-26 17:49 ` [Bloat] [tsvwg] [aqm] " Scheffenegger, Richard
2013-03-26 20:02 ` Hagen Paul Pfeifer
2013-03-21 20:04 ` [Bloat] [tsvwg] " David Lang
2013-03-21 20:47 ` Oliver Hohlfeld
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