From: Andy Furniss <andy.furniss@dsl.pipex.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] unexpected drop
Date: Sun, 08 Jan 2006 21:20:08 +0000 [thread overview]
Message-ID: <43C18208.3070209@dsl.pipex.com> (raw)
In-Reply-To: <000801c6141c$31ad2b30$0100000a@casa>
Roberto Belletti wrote:
> Hello everybody,
>
> I have a Linux router with an ethernet adapter and a ADSL device.
> My router has a GRE tunnel connected to a remote IP address.
>
> Using "tc" I have configured 3 different classes:
> 1. 290kbit rate (used for Voip Services)
> 2. 180kbit rate (used for GRE tunnel)
> 3. 80kbit rate (for generic data traffic)
>
> For each class, using "iperf", I send some data from a PC (connected attraverso eth0 device)
> to a remote destination. The remote destination is the GRE tunnel terminator.
>
> The data traffic test is different for each class:
> 1. 240kbit, 60byte packet size, UDP protocol
> 2. 200kbit, 250byte packet size, UDP protocol
> 3. 80kbit, 235byte packet size, UDP protocol
>
> In this way I got a lot of dropped packets on each class, while my expected results was
> a many drop packages only on the second class.
iperf may be using data rates htb uses ip level packet sizes (I guess on
atm0 - it's ip len +14 on eth).
I don't know cbq but notice the rates don't add up.
Andy.
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prev parent reply other threads:[~2006-01-08 21:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-08 6:24 [LARTC] unexpected drop Roberto Belletti
2006-01-08 21:20 ` Andy Furniss [this message]
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