From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Furniss <andy.furniss@dsl.pipex.com>
Date: Tue, 30 Mar 2004 10:45:18 +0000
Subject: Re: [LARTC] New IMQ device implementation supporting device EOS
Message-Id: <40694FBE.2060206@dsl.pipex.com>
List-Id: <lartc.vger.kernel.org>
References: <40683536.4010104@hlohovec.net>
In-Reply-To: <40683536.4010104@hlohovec.net>
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To: lartc@vger.kernel.org

Jiri Fojtasek wrote:
> Hello Roy
> 
> Roy wrote:
> 
>  >Hello,
>  >imq became realy popular now ;)
>  > >
> Sure, same as whole GNU/Linux  :)
> 
>  >It would be good ir you wrote what is that EOS to save time for some 
> people
>  >on searches.
>  >
>  > >
> EOS - End of Send. Its time betwen two dequeues and packet transmits
> used by qdisc for calculation.

Is that a kernel transmit or a real "on the wire" transmit - ie can you 
keep the devices' buffer empty or just detect when it's full?

  Any of current IMQ implementations do not
> use it, so the calculation by qdisc may not be correct, whish causing
> filling physical device fifos without control. In devices with variable
> speed (WiFi, Modems) it causes overload because the physisal trafics is
> out of control. It happen only on busy boxes, like my routers where is
> about 70 ppl at once. In a simply test enviroment this issue will never
> happen.
> 
>  >and it would be good if you posted source code directly (not inside of 
> diff
>  >file)
>  >for review purposes
>  >
>  > >
> The whole patch contain only few new files, all other are patches of the
> original kernel files. BTW Midnight Comander 4.6.0 contain very nice
> diff virtual filesystem, so you can browse .diff files like a tar archive.
> 
>  >also you can look at my imq version, because it is much easer to develop
>  >since is independent from kernel.
>  >and does not need to patch it.
>  >http://pupa.da.ru/imq/
>  >
>  > >
> I have play with with your version :) Having independet implementation
> is nice idea. I play with that idea too but it was more dificult to have
> stable solution in short time i need and with EOS support its quite
> imposible ...
> 
> Jiri
> 
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