[MPlayer-users] Optimization for a slow CPU

[john znuck]

Grant,

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.

jz


Grant <emailgrant at gmail.com> wrote: > "I don't know about video memory." The instruction on
> the mplayer link that I mentioned is very clear about
> how to know the video ram base addr and its size. You
> ought to get those numbers and then run that "ech0"
> command with them as values.
>
> My cat /proc/mtrr looks like this:
>
> reg00: base=0x00000000 (   0MB), size= 512MB: write-back, count=1
> reg01: base=0xf0000000 (3840MB), size= 128MB: write-combining, count=1
>
>
> I don't have any memory sticks, only 512MB of main mem and
> max 128MB of shared video ram.

Sorry about that.  I'm seeing three different values related to video RAM.

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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