From: Allan Schaffer (allan++at++sgi.com)
Date: 02/06/2003 08:42:47
Hello Peter,
Blomqvist Peter wrote:
> Does anyone have any info on the PF 3.0 status on Linux?
>
> Overall performance is good, but occasionally, frames are dropped.
> When looking into that, i see some strange things:
> *) CPU usage is extremely high, around 99% even for a simple model: "cow.obj"
> (This occurs even when locking the framerate to say a 1/10 of maximum performance)
> *) Memory leaks running Perfly. (Run sustained and monitor memory usage).
We'll have to take a look into these ..
Regarding the CPU usage, the thing that comes to mind is our "emulation"
of vertical retrace timing in cases where swapbuffer synchronization
isn't turned on. If I recall correctly, we _spin_ -- so using a very
simple model and cranking the framerate way down, is going to result in
very high CPU usage due to the spin.
> PF: 3.0 *demo* (Is there any remedy to expect from the "real" version?)
There shouldn't; the only difference between the demo & full version is
the presence of the "Powered by.." banner.
Allan
-- Allan Schaffer allan++at++sgi.com Engr. Manager, Core Rendering 1-650-933-2160 Silicon Graphics http://www.sgi.com
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