netdev - Re: network stream fairness

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Message-ID: <1447086271.17135.45.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Mon, 09 Nov 2015 08:24:31 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Niklas Cassel <niklas.cassel@...s.com>
Cc:	"edumazet@...gle.com" <edumazet@...gle.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: network stream fairness

On Mon, 2015-11-09 at 08:07 -0800, Eric Dumazet wrote:

> Your numbers suggest a cwnd growth then, which might show a CC bug.
> 
> Please run the following when your iper3 runs on regular 4.3 kernel
> 
> for i in `seq 1 10`
> do
> ss -temoi dst 192.168.0.141
> sleep 1
> done
> 

Another thing to try is to change tcp_limit_output_bytes back to 131072

Of course, your driver be the problem as well, but I am guessing it is
not upstream ?



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