Hi,

Here is my setup:

-- Intel Core 2 6420 2.13GHZ
-- 3G RAM
-- Nvidia GeForce GTX 260 (drivers: 6.14.11.8242 2009-3-9)
-- winxp sp2,vs2005
-- osg2.8

In single monitor mode everything is working fine.When I run my application,CPU 
usage is a constant 10%~15%.

But when I use two monitors and set the Nvidia card to "TwinView" mode ,the CPU 
usage dramatically raise to 

50%.It is basically using an entire CPU core since I use a 2 core machine.Then 
I find the same problem happens when 

I run any OSG example or any OSG application in TwinView mode!It is OK when I 
use other multi-monitor mode such as 

"pan mode".

So I think maybe it is something wrong with the OSG2.8 and the "TwinView" mode 
of Nvidia card?

Any one can help me?

Thank you!

Cheers,
Lv

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http://forum.openscenegraph.org/viewtopic.php?p=20353#20353





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