glxgears doesn't consume CPU

[Andre Truter]

On Tue, 29 Mar 2005 01:46:42 +0200, Lars Hallberg <lah at micropp.se> wrote:

> Yeah, but if I anderstand corectly, when moving the window, cpu usage
> rised (sane) *and* FPS raised (completly insane)!!!
> 
> But talking about sane.... specialy when hardvare suported, shuld not GL
> be able to synk FPS with the monitors vertikal refreshrate (if it can be
> reached).... Seams like a complite waste of cpu cycels to produce more
> frames than the monitor can show - and can reasnobel only give worse result!
> 

Well, it seems that glxgrears can do weird things.  I just tried it
out on my different machines.  The old AMD 1GHz with nVidia card
strted out with FPS on the 900's and CPU load of 4 % for user
processes.  Setiathome was running, so the nice usage was at 99%.

Then I decided to stop seti and while I was fiddling to stop it, the
FPU went up to over 3000! When seti was stopped, the FPU returned to
the 900's, but now CPU user processes goes up to 46%

I think that glxgears do not always caclulate the FPU correct when
other processes are interfering.
But the CPU usage is a bit weird.

-- 
Andre Truter | Software Engineer | Registered Linux user #185282
ICQ #40935899 | AIM: trusoftzaf | http://www.trusoft.za.org

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