[Bloat] Testing fq_codel on Android Galaxy Nexus AK kernel

Simon Barber simon at superduper.net
Tue Feb 26 14:25:34 EST 2013


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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