From mboxrd@z Thu Jan  1 00:00:00 1970
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Subject: Aw: Re: dvb usb issues since kernel 4.9
From: Peter Zijlstra <peterz@infradead.org>
Message-Id: <20180108214427.GT29822@worktop.programming.kicks-ass.net>
Date: Mon, 8 Jan 2018 22:44:27 +0100
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
List-ID: <linux-usb.vger.kernel.org>

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From mboxrd@z Thu Jan  1 00:00:00 1970
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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>,
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        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>
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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 ?