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From: Andy Furniss <andy.furniss@dsl.pipex.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Weighted packet shaping?
Date: Thu, 30 Dec 2004 00:05:08 +0000	[thread overview]
Message-ID: <41D34634.60809@dsl.pipex.com> (raw)
In-Reply-To: <20041221034303.GB27656@linux.comp>

Mark Williams (MWP) wrote:

> I also know the graph is correct as the estimated rates from TC are the same as
> shown on the graph.
> 
> So this is becoming an unknown problem?

There must be something :-)

One thing I thought of, if you are getting any congestion/packet loss on 
the ftp upload, then you would expect results more like you see.

I would take a closer look at what is happening to the upload connection.

You could get an idea of whether you are dropping by doing some netstat 
-s | grep retrans on the box running the upload.

You could also do a tcpdump to look at what window the server is letting 
you use / see drops.

Looking at backlogs with tc -s class ... should show the FTP class as 
backloged all the time - if it's empty(not there) sometimes then that's 
another sign that something else is limiting it.

Andy.


> 
> Thanks.
>  Mark Williams.
> 


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  parent reply	other threads:[~2004-12-30  0:05 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-21  3:55 [LARTC] Weighted packet shaping? Mark Williams (MWP)
2004-12-22  4:53 ` Mark Williams (MWP)
2004-12-22  9:07 ` Ed Wildgoose
2004-12-22 13:49 ` Andy Furniss
2004-12-22 15:48 ` Mark Williams (MWP)
2004-12-22 22:54 ` Andy Furniss
2004-12-23 10:56 ` Mark Williams (MWP)
2004-12-24 14:08 ` Andy Furniss
2004-12-24 15:19 ` Mark Williams (MWP)
2004-12-24 16:36 ` Andy Furniss
2004-12-26  4:38 ` Mark Williams (MWP)
2004-12-26 13:09 ` Andy Furniss
2004-12-28  9:35 ` Mark Williams (MWP)
2004-12-29  2:46 ` Andy Furniss
2004-12-29  6:52 ` Mark Williams (MWP)
2004-12-29 13:26 ` Francisco Pereira
2004-12-30  0:05 ` Andy Furniss [this message]
2005-01-03 11:22 ` marco ghidinelli
2005-01-04 13:57 ` Andy Furniss

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