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Low redisplay performance (23 regression)
From: |
David Reitter |
Subject: |
Low redisplay performance (23 regression) |
Date: |
Mon, 20 Apr 2009 17:58:53 -0400 |
I've been noticing a substantial slowdown in redisplay performance.
Scrolling down emacs.c in fundamental-mode takes about 2 seconds in
Emacs 22 (Carbon port), and 3 seconds in Emacs 23 (NS port).
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.
The effect interacts with the display of overlays etc. in the header
line. When turning that off, I get about 2.5 seconds in Emacs 22, and
still more than 4 seconds in 23/NS. (All values estimated manually
from several tries.)
I'm wondering if others get the same on other platforms comparing 22
and 23, or if this is a problem specifically in the NS port (for
example, with setting drawing color or the like).
- Low redisplay performance (23 regression),
David Reitter <=
- Re: Low redisplay performance (23 regression), Chong Yidong, 2009/04/20
- Re: Low redisplay performance (23 regression), David Reitter, 2009/04/20
- Re: Low redisplay performance (23 regression), Eli Zaretskii, 2009/04/20
- Re: Low redisplay performance (23 regression), Eli Zaretskii, 2009/04/21
- Re: Low redisplay performance (23 regression), Eli Zaretskii, 2009/04/21
- Re: Low redisplay performance (23 regression), Juanma Barranquero, 2009/04/21
- Re: Low redisplay performance (23 regression), David Reitter, 2009/04/21