Re: Console debugging wishlist was: Re: oops pauser.

[Andi Kleen <ak@suse.de>]

On Wednesday 11 January 2006 14:43, Antonino A. Daplas wrote:
> Andi Kleen wrote:
> > On Wednesday 11 January 2006 14:05, Antonino A. Daplas wrote:
> >> Andi Kleen wrote:
> >>> On Wednesday 11 January 2006 13:24, Antonino A. Daplas wrote:
> >>>
> >>>> In the VGA console, all buffers, including scrollback is in video RAM, but
> >>>> the size is fixed and is very small.
> >>> I wonder if that can be fixed.
> >> It can be done, but it will affect VGA console performance.
> > 
> > By how much? As long as it still scrolls reasonably fast it would be ok for me.
> 
> Each character will need to be written twice, one to VGA RAM and another to
> the shadow/scrollback buffer in system RAM.

That should be basically unnoticeable. 

> It would still be reasonably fast. 
> 
> Perhaps I can implement this for vgacon.

Please do. And increase the default scrollback please or make it a CONFIG.

Thanks,
-Andi
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