Re: Possible redisplay performance enhancements (revisited)

[David Reitter]

On 21 Apr 2006, at 10:47, YAMAMOTO Mitsuharu wrote:

> But text drawing
> with ATSUI on the Mac Carbon port is sensitive to these changes.  I
> think ATSUI support is ready to be enabled by default once these
> issues are solved.

I agree. We have this enabled in our distribution, which is used by a  
couple of thousand people (among them people working with various  
Asian fonts), and I haven't received any complaints.
Thanks for the excellent work.


Another problem, obviously across ports, remains. When many faces  
have been defined during the current session, creating new frames  
slows down to a full second or so. The problem can be recreated with  
packages such as color-theme, where you can flick through a lot of  
themes, which AFAIK irreversibly defines a number of faces. Having  
several hundred of them is not untypical.

A while ago I traced this down to the fact that all faces get copied  
when a frame is created.

I reported the issue here and you made some improvements to the  
Carbon port, but the general problems remains.

- D

Ref:
http://lists.gnu.org/archive/html/emacs-devel/2005-08/msg00861.html
http://lists.gnu.org/archive/html/emacs-pretest-bug/2005-08/ 
msg00168.html