Re: mtrr
Richard Gooch (Richard.Gooch@atnf.CSIRO.AU)
Tue, 4 Aug 1998 11:40:44 +1000
Ben Pfaff writes:
> Tom Rini <tmrini@ntplx.net> writes:
>
> The docs for mtrr say that it can speedup graphical usage upto 2.5, and
> the Docs provide examples on howto read/add to /proc/mtrr, but are there
> any apps that make use of it? or do all you have to do is turn on the
> config option and then turn it on like the file says it would be used by X
> (or would it need a patch to use as well as manipulate?) and framebuffers?
>
> It's not something that programs have to support, it just works. Try
> benchmarking with and without mtrr. You should see a big difference
> on some operations.
This could be slightly misleading. *Something* has to set up these
MTRRs. In time, this will be done automatically by the FBcon driver of
XFree86. Right now, the user/sysadmin needs to fiddle with /proc/mtrr.
It's true that individual X clients don't need to worry about it.
Regards,
Richard....
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