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From: Andy Furniss <andy.furniss@dsl.pipex.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Re: ADSL Calculator
Date: Sun, 19 Jun 2005 10:36:11 +0000	[thread overview]
Message-ID: <42B54A9B.3000103@dsl.pipex.com> (raw)
In-Reply-To: <20050617011135.GA9675@yamamaya.is-a-geek.org>

Ed W wrote:
>>
>> Bittorrent is harder to shape than most things.
> 
> I think the issue is lots of connections all going into fast start?
> 
> I liked Andy's idea of having a seperate queue for the first few Kbytes 
> of new connections and pegging it with a VERY short queue length.  This 
> means that connections in fast start will get a packet drop very early 
> on unless they play very nicely

Getting new connections out of slow start like this helps my ingress 
shaping for browsing - not bittorrent, though, it cycles through 
existing connections doing tit for tat, speculative and when new chuncks 
are available so they go in and out of slow start after they have passed 
data already.

See the last few paragraphs of the protocol for the choking rule.

http://www.bittorrent.com/protocol.html


Andy.
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      parent reply	other threads:[~2005-06-19 10:36 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-17  1:11 [LARTC] Re: ADSL Calculator Tobias Diedrich
2005-06-17 10:15 ` Per Marker Mortensen
2005-06-17 10:45 ` Andy Furniss
2005-06-17 13:30 ` Ed W
2005-06-19 10:36 ` Andy Furniss [this message]

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