From: Peter Missel <peter.missel@onlinehome.de>
To: video4linux-list@redhat.com
Subject: Re; system keeps freezing once every 24 hours / random apps crashing
Date: Mon, 2 Jan 2006 00:20:11 +0100
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Cc: Mark v Wolher <trilight@ns666.com>, Jiri Slaby <xslaby@fi.muni.cz>,
       Sami Farin <7atbggg02@sneakemail.com>,
       Mauro Carvalho Chehab <mchehab@brturbo.com.br>, jesper.juhl@gmail.com,
       Linux Kernel <linux-kernel@vger.kernel.org>, s0348365@sms.ed.ac.uk,
       rlrevell@joe-job.com, arjan@infradead.org
References: <200512310027.47757.s0348365@sms.ed.ac.uk> <20060101191221.7E34322AEAC@anxur.fi.muni.cz> <43B82F87.5010804@ns666.com>
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> But i wonder, can you think of something why grabdisplay causes crashes
> and overlay doesn't ? This needed patch, would it solve this problem too ?

Grabdisplay causes (roughly) twice the traffic. Overlay mode runs the TV 
stream straight into the graphics card, peer-to-peer, while grabdisplay 
streams into RAM, lets the CPU read from there, scale, and push into the 
graphics card.
Pure overlay mode also produces zero CPU load.
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