On 5 Nov 2010, at 13:04, Ger Hooton wrote:
> I have an Nvidia Quadro FX 1700 (rev a1) with Driver
> NVIDIA-Linux-x86-173.14
> I installed the driver OK.
> My Problem is that graphics are using the computers CPU.
> E.G. when I move a dialogue box on the screen the CPU usage increases.
>> My system info is :-
> OS: CentOS release 4.8 Linux 2.6.9-89.ELsmp
> CPU: Pentium(R) Dual-Core CPU E5300 @ 2.60GHz
Comment: Expected behaviour.
Resolution: None required.
The graphics card takes care of moving bits around in video memory and updating the screen, but the main CPU has to handle things like the mouse interrupts as you move the window around, and all the resultant X server and client code which runs.
That said, I'd hardly expect that to be a hugely significant hit on a modern CPU. After all , people have been reasonably running X for decades on much slower CPUs than we have now. (Mind you, early X window manager moved a wireframe representation of a window around, rather than the window's entire content)
Niall
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