On Fri, Jul 25, 2008 at 3:20 PM, Keith Clark <[EMAIL PROTECTED]>wrote:
> Ok, I finally got somewhere!!!!! A major BIOS update, driver update and
> now I can run. I start up FGFS with no issues now. All seems well and
> fast, for at least the first 3 mins. Then things go back to being choppy
> again. I assume this is some kind of cache setting or something?
>
Disclaimer: I have no idea ... but let me also suggest heat as a
consideration. Just yesterday I was trying to diagnose a laptop that ran
flightgear in 3840x1024 resolution beautifully for about 5-10 minutes and
then the frame rates would slow to about 6-7fps and just sit there.
Sometimes the rates would recover and then drop again, sometimes you had to
restart FlightGear to get good frame rates again.
This laptop had nvidia hardware so I tracked down a little utility called
"nvclock" that shows the temperature of the gpu. This laptop's graphic gpu
was running upwards of 120C ... compared to about 65-70C for my desktop. We
turned the laptop on it's side and blew some cool air over it with a big
window fan and the temps immediately dropped down into a more sane range and
the frame rates came back and things ran beautifully from that point on as
long as we kept the air moving.
So in this case the nvidia hardware was smart enough to sense it was wildly
overheated and it went into a slower, power/heat saving mode to keep from
frying itself.
Probably has nothing to do with your issue, but I thought I'd mention this
since it was fresh on my mind.
Curt.
--
Curtis Olson: http://baron.flightgear.org/~curt/
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