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From: Chong Yidong <cyd@stupidchicken.com>
To: David Reitter <david.reitter@gmail.com>
Cc: Tassilo Horn <tassilo@member.fsf.org>,
	emacs-devel@gnu.org, Miles Bader <miles@gnu.org>
Subject: Re: Low redisplay performance (23 regression)
Date: Wed, 29 Apr 2009 14:45:41 -0400	[thread overview]
Message-ID: <87zldzcn8q.fsf@cyd.mit.edu> (raw)
In-Reply-To: <24EC426D-D6DA-438B-B794-72C123142235@gmail.com> (David Reitter's message of "Wed, 29 Apr 2009 13:49:26 -0400")

David Reitter <david.reitter@gmail.com> writes:

> On Apr 29, 2009, at 1:40 PM, Tassilo Horn wrote:
>>
>> And on yet another related note, today I've found out that after
>> changing the font scale for the current buffer using `C-x C-+' or `C-x
>> C--' line-by-line scrolling slows down considerably.
>
> As said earlier, I found that using face-remapping is highly
> correlated with this slow-down.

I think the problem is that lookup_basic_face computes the remapped
face_id in an expensive way.  It needs to do some caching.




  parent reply	other threads:[~2009-04-29 18:45 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-20 21:58 Low redisplay performance (23 regression) David Reitter
2009-04-20 22:31 ` Deniz Dogan
2009-04-20 22:33 ` Chong Yidong
2009-04-20 23:20   ` David Reitter
2009-04-21  3:15   ` Eli Zaretskii
2009-04-21 12:36     ` Juanma Barranquero
2009-04-21 13:51       ` David Reitter
2009-04-21 14:20         ` Juanma Barranquero
2009-04-21 18:58       ` Eli Zaretskii
2009-04-21 19:07         ` Eli Zaretskii
2009-04-21 23:24           ` Juanma Barranquero
2009-04-21 20:19         ` David Reitter
2009-04-21 20:53           ` Chong Yidong
2009-04-21 22:15             ` David Reitter
2009-04-22 15:30           ` Daniel Clemente
2009-04-22 15:50             ` David Reitter
2009-04-22 16:28               ` Chong Yidong
2009-04-22 18:26                 ` David Reitter
2009-04-23 13:34                   ` Willem Rein Oudshoorn
2009-04-23 22:45                     ` Miles Bader
2009-05-06 13:28                       ` Willem Rein Oudshoorn
2009-04-22 22:58             ` YAMAMOTO Mitsuharu
2009-04-23  1:01               ` ftx font driver [Re: Low redisplay performance (23 regression)] Kenichi Handa
2009-04-23  7:31                 ` YAMAMOTO Mitsuharu
2009-04-23 11:22                   ` Kenichi Handa
2009-04-23 12:38                     ` Chong Yidong
2009-04-23 14:56                       ` Stefan Monnier
2009-04-24  1:09                         ` Kenichi Handa
2009-04-24  2:01                           ` Stefan Monnier
2009-04-24  3:52                             ` Chong Yidong
2009-04-25 14:38                             ` Chong Yidong
2009-04-21 23:16         ` Low redisplay performance (23 regression) Juanma Barranquero
2009-04-21 14:56 ` William Xu
2009-04-21 15:30   ` David Reitter
2009-04-22 14:25     ` William Xu
2009-04-29 10:17 ` Tobias C. Rittweiler
2009-04-29 11:54   ` David Reitter
2009-04-29 13:33   ` Stefan Monnier
2009-04-29 17:35     ` Tobias C. Rittweiler
2009-04-29 20:20       ` Stefan Monnier
2009-04-30  7:34         ` Tobias C. Rittweiler
2009-04-30 20:00           ` Stefan Monnier
2009-04-30 20:34             ` Tobias C. Rittweiler
2009-04-29 18:01     ` Tobias C. Rittweiler
2009-04-29 17:40   ` Tassilo Horn
2009-04-29 17:49     ` David Reitter
2009-04-29 18:21       ` Tassilo Horn
     [not found]         ` <14FF0914-56BA-41D6-85DA-A4024694CF75@gmail.com>
2009-04-29 19:45           ` Tassilo Horn
2009-04-29 18:45       ` Chong Yidong [this message]
2009-04-30  2:46         ` YAMAMOTO Mitsuharu
2009-04-30  3:49           ` Chong Yidong
2009-04-30  6:27             ` YAMAMOTO Mitsuharu
2009-04-29 22:10       ` Miles Bader
2009-04-30  5:05     ` Chong Yidong
2009-04-30  7:53       ` Tobias C. Rittweiler
2009-04-30  9:37       ` Tassilo Horn
2009-04-30 12:44       ` David Reitter
2009-04-29 18:38 ` Dan Nicolaescu

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