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SubjectRe: fbcon slowness [was NTP on 2.4.2?]
Hi!

> > Ug!!! This is getting bad. Give me some time. I plan on releasing a new
> > vesafb using MMX to help speed up the drawing routines. It will help alot
> > with the latency issues. I also know using ARM assembly we can greatly
> > reduce the latency issues.
>
> There is another issue with vesafb. It tries to use an MTRR, but this
> fails for the 2.5MB region that is video RAM because 2.5MB is not a
> power of two.
>
> The console driver does not actually use 2.5MB. Does it make sense to
> use an MTRR for the smaller power-of-two region?

I had patch which tried that at one point. Just try all 2^n numbers
<= size until it succeeds.
Pavel
--
The best software in life is free (not shareware)! Pavel
GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+
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