[MPlayer-users] Optimization for a slow CPU

Grant emailgrant at gmail.com
Tue Sep 12 04:36:49 CEST 2006


> it seems like you have an on-board graphics processor which can use 64M shared memory and you have a graphics card with 4M video ram. Is that right?
>
> If you only have a 4M video card, then the setting you mentioned is alright. But still, 4M is not going to be good enough for fullscreen video.
>
> If you have both, then you should take out the video card and use the on-motherboard shared ram, in which case size=40000000.

All I have is the on-board graphics processor actually.  Is this the
command I should run?

echo "base=0xf8000000 size=0x400000 type=write-combining" >| /proc/mtrr

- Grant

> Here's my cat /proc/mtrr :
>
> reg00: base=0x00000000 (   0MB), size= 128MB: write-back, count=1
> reg01: base=0x08000000 ( 128MB), size=  64MB: write-back, count=1
> reg02: base=0x0bf00000 ( 191MB), size=   1MB: uncachable, count=1
>
> the output of dmesg :
>
> agpgart: Detected an Intel i810 E Chipset.
> agpgart: detected 4MB dedicated video ram.
> agpgart: AGP aperture is 64M @ 0xf8000000
>
> and the output of lspci -v :
>
> Memory at f8000000 (32-bit, prefetchable) [size=64M]
> Memory at ffa80000 (32-bit, non-prefetchable) [size=512K]
>
> I know I have 192MB of system RAM (128+64).  dmesg says 4MB and 64MB
> in the context of video RAM.  lspci -v says 64MB and 512KB.  Should I
> execute the following based on 4MB:
>
> echo "base=0xf8000000 size=0x400000 type=write-combining" >| /proc/mtrr
>
> - Grant



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