[ut2004] performance tip: turn on agp (or, zovirl is dumb)

Ian Hastie ianh at iahastie.clara.net
Tue Apr 20 10:06:24 EDT 2004

On Tuesday 20 Apr 2004 06:11, Mark Ivey wrote:
> Ok, so several weeks after I asked for performance tips I wondered why
> the recently posted "dmesg | grep 'AGP Aperture'" command wasn't doing
> anything.  I found out that agpgart wasn't loaded, and it is apparently
> pretty important.  'cat /proc/driver/nvidia/agp/status' said AGP was
> disabled.  Hmm, that might cause a performance hit... :)
> I had to do 'insmod agpgart' to turn it on.

This will not get AGP working if you're running a 2.6 kernel.  For that you 
need to modprobe the chipset specific driver, eg via-agp or ali-agp.  Or for 
an Athlon 64 or Opteron it's amd64-agp.

By the way, modprobe is better than insmod most of the time as it handles 


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