From: Simon Barber <simon@superduper.net>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] Testing fq_codel on Android Galaxy Nexus AK kernel
Date: Tue, 26 Feb 2013 11:25:34 -0800 [thread overview]
Message-ID: <512D0C2E.2020205@superduper.net> (raw)
In-Reply-To: <1361904513.11403.9.camel@edumazet-glaptop>
What is the interface to these 3G modems? Is there a 'packet has been
transmitted' ACK that could be used to implement a BQL (or better still
- time queue limit)?
Simon
On Tue 26 Feb 2013 10:48:33 AM PST, Eric Dumazet wrote:
> On Tue, 2013-02-26 at 20:27 +0200, Jonathan Morton wrote:
>> Since the phone only has control of the bottleneck in the upload
>> direction, a browse + upload or ping + upload or VoIP + upload test
>> would be appropriate. It's important to control the link speed as much
>> as possible to be the same for equivalent tests, and to try several
>> different network conditions.
>>
>> Tests involving heavy downlink traffic would measure bloat at the cell
>> tower, or at the ISP or access point for wifi tests.
>
> I have serious doubts this will show something.
>
> I guess the queue of not yet sent packets will be _after_ qdisc layer,
> in the network device itself.
>
> _______________________________________________
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> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
next prev parent reply other threads:[~2013-02-26 19:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAH44Dxbt+fixeLHwmA7QnndhhUbAjUEORxAsfb5LarUD7a3ZMw@mail.gmail.com>
2013-02-26 17:40 ` Mario Ferreira
2013-02-26 18:27 ` Jonathan Morton
2013-02-26 18:48 ` Eric Dumazet
2013-02-26 19:25 ` Simon Barber [this message]
2013-02-26 22:25 ` Dave Taht
2013-02-28 6:08 ` Mário Sérgio Fujikawa Ferreira
2013-03-10 1:21 ` Mário Sérgio Fujikawa Ferreira
2013-03-10 1:26 ` Mário Sérgio Fujikawa Ferreira
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