Date: Mon, 8 Jan 2018 22:44:27 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Jesper Dangaard Brouer <jbrouer@redhat.com>
Cc: Josef Griebichler <griebichler.josef@gmx.at>,
        Mauro Carvalho Chehab <mchehab@s-opensource.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
        Rik van Riel <riel@redhat.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Hannes Frederic Sowa <hannes@redhat.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        netdev <netdev@vger.kernel.org>,
        Jonathan Corbet <corbet@lwn.net>,
        LMML <linux-media@vger.kernel.org>,
        David Miller <davem@davemloft.net>,
        torvalds@linux-foundation.org
Subject: Re: dvb usb issues since kernel 4.9
Message-ID: <20180108214427.GT29822@worktop.programming.kicks-ass.net>
References: <20180107090336.03826df2@vento.lan>
 <Pine.LNX.4.44L0.1801071010540.13425-100000@netrider.rowland.org>
 <20180108074324.3c153189@vento.lan>
 <trinity-c7ec7cbd-a186-4a2a-bcb6-cce8993d6a90-1515428770628@3c-app-gmx-bs32>
 <20180108223109.66c91554@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20180108223109.66c91554@redhat.com>
User-Agent: Mutt/1.5.22.1 (2013-10-16)
Sender: linux-kernel-owner@vger.kernel.org

On Mon, Jan 08, 2018 at 10:31:09PM +0100, Jesper Dangaard Brouer wrote:
> I did expected the issue to get worse, when you load the Pi with
> network traffic, as now the softirq time-budget have to be shared
> between networking and USB/DVB. Thus, I guess you are running TCP and
> USB/mpeg2ts on the same CPU (why when you have 4 CPUs?...)

Isn't networking also over USB on the Pi ?