Messages in this thread | | | Subject | Re: Re; system keeps freezing once every 24 hours / random apps crashing | From | Alan Cox <> | Date | Mon, 02 Jan 2006 22:29:43 +0000 |
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On Llu, 2006-01-02 at 00:20 +0100, Peter Missel wrote: > 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.
Grab display also stresses the main memory bus and bus arbitration logic which caused problems on some older chipsets many of which handled overlay mode fine. Equally some other older chipsets couldn't get PCI<->PCI right but worked for main memory.
BT8x8's are very good for finding chipset problems.
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