Re: Low redisplay performance (23 regression)

[David Reitter]

On Apr 21, 2009, at 10:56 AM, William Xu wrote:

> David Reitter <address@hidden> writes:
>
> > With font-lock-mode (in c-mode) enabled, the difference is even  
> > larger:
> >
> > About 2.5 seconds in Emacs 22, and more than 7 seconds in 23/NS.
>
> Is my macbook too fast?  With font-lock-mode enabled (23/NS), page
> scrolling in buffer emacs.c responds nearly instantly.  I see no delay
> at all.

I can't see a delay when scrolling just one page.  The above figures  
are for scrolling page-wise through the whole buffer.

I've tried building with -O9 and tune settings for the CPU - this  
doesn't see to do much.