On Thu, 10 Nov 2005, Greg Bur wrote:
> It definitely is not an issue with swapping to disk. For some reason X is
> causing a high CPU load and it acts like its only using one processor. If I
> switch back to the open source driver the load seems to be balanced across
> all "4" processors. To make things even more interesting if I open glxgears
> while using the Nvidia driver the problem can be temporarily alleviated. The
> CPU load drops back to normal and the system is much more responsive. The
> open source driver is working fine for now but I sure would like to know
> what it is that I'm doing to cause the Nvidia driver to perform so poorly.
Maybe the Nvidia drivers dont play well with threading and/or SMP?
That's my guess that this point. If I get the inspiration tonight I'll try disabling hyperthreading in the BIOS and also recompiling the kernel without SMP support. What has me beating my head against the wall so much is not the poor performance but the fact that one out of every 10 or 15 attempts the driver works as expected. I suppose if something positive is to be made of this it is that I will be more reluctant to play any games because I will have to reboot into Windows.
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