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Re: Low redisplay performance (23 regression)
From: |
Dan Nicolaescu |
Subject: |
Re: Low redisplay performance (23 regression) |
Date: |
Wed, 29 Apr 2009 11:38:42 -0700 (PDT) |
David Reitter <address@hidden> writes:
> 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).
I have not measured anything, but I do not see any visible difference on
GNU/Linux.
- Re: Low redisplay performance (23 regression), (continued)
- Re: Low redisplay performance (23 regression), Chong Yidong, 2009/04/29
- Re: Low redisplay performance (23 regression), YAMAMOTO Mitsuharu, 2009/04/29
- Re: Low redisplay performance (23 regression), Chong Yidong, 2009/04/29
- Re: Low redisplay performance (23 regression), YAMAMOTO Mitsuharu, 2009/04/30
- Re: Low redisplay performance (23 regression), Miles Bader, 2009/04/29
- Re: Low redisplay performance (23 regression), Chong Yidong, 2009/04/30
- Re: Low redisplay performance (23 regression), Tobias C. Rittweiler, 2009/04/30
- Re: Low redisplay performance (23 regression), Tassilo Horn, 2009/04/30
- Re: Low redisplay performance (23 regression), David Reitter, 2009/04/30
Re: Low redisplay performance (23 regression),
Dan Nicolaescu <=