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Re: What makes set-window-buffer slow?
From: |
Eli Zaretskii |
Subject: |
Re: What makes set-window-buffer slow? |
Date: |
Sat, 25 Jun 2016 17:27:17 +0300 |
> Cc: address@hidden, address@hidden, address@hidden
> From: Clément Pit--Claudel <address@hidden>
> Date: Sat, 25 Jun 2016 10:07:11 -0400
>
> > Does the WINDOW argument of set-window-buffer name the selected window
> > at the time of the call? If not, set-window-buffer will cause all the
> > other windows to be redisplayed, so arranging for WINDOW to be the
> > selected window might speed up things.
>
> The window was indeed not selected at the time of the call. Would a
> simple with-selected-window around the call do it?
Yes, I think so. Although it'd be better to arrange that to happen
without the need to select the window, if possible.
> If so, could set-window-buffer just do that?
No, of course not. We don't know at this level what is the
programmer's intent.
> Btw, do you think there is any issue with just not calling set-window-buffer
> if the window already contains that buffer?
Not sure I understand the question: how can there be an issue when NOT
doing something?
> Would it be useful for me to profile the same code on my own
> machine? Maybe comparing the profiles would help.
Could be. But identifying the differences is also useful.
> > Finally, if the user can try a later Emacs, it might help, because
> > some non-trivial redisplay optimizations were done since 24.4.
>
> Ok, I'll keep this in mind; I don't think that will happen for them until
> Debian updates, though. And in any case, I don't even have this problem on
> 24.4...
The optimizations might well affect only some system configurations.
- Re: What makes set-window-buffer slow?, (continued)
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/23
- Re: What makes set-window-buffer slow?, Eli Zaretskii, 2016/06/24
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/24
- Re: What makes set-window-buffer slow?, Eli Zaretskii, 2016/06/24
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/24
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/24
- Re: What makes set-window-buffer slow?, Eli Zaretskii, 2016/06/24
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/24
- Re: What makes set-window-buffer slow?, Eli Zaretskii, 2016/06/25
- Re: What makes set-window-buffer slow?, Clément Pit--Claudel, 2016/06/25
- Re: What makes set-window-buffer slow?,
Eli Zaretskii <=
- Re: What makes set-window-buffer slow?, Eli Zaretskii, 2016/06/25