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Re: How to measure frame rate in fps?
From: |
Eli Zaretskii |
Subject: |
Re: How to measure frame rate in fps? |
Date: |
Tue, 01 Jun 2021 18:35:43 +0300 |
> Cc: wyuenho@gmail.com, emacs-devel@gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Tue, 1 Jun 2021 18:00:35 +0300
>
> > I also am not sure the above faithfully reflects what happens in Real
> > Life when Emacs has nothing to redisplay: I think you get the tool-bar
> > redisplay triggered because the evaluation of the benchmark call
> > causes it somehow. How did you evaluate it, exactly?
>
> Either using M-:, or with M-x benchmark like you suggested (only without
> prefix argument, to measure just 1 iteration). The results are similar.
Yes, that figures: entering the minibuffer triggers a more thorough
redisplay than usual: we redisplay the menu bar, the tool bar, and
several other things as result, for reasons that should be obvious.
Try C-x C-e instead after typing the sexp in *scratch. In that
scenario, I don't expect the tool bar to be redrawn.
> > How do you deduce that posn-at-point triggers redisplay of the GTK
> > tool bar? It shouldn't, AFAIR. posn-at-point and its ilk only
> > simulate display of text, they don't care about window's and frame's
> > decorations.
>
> You're right, posn-at-point shows me different timings. Often enough as
> high as 12-15ms, which is not great for a low latency display, but the
> numbers don't seem to be tied to tool-bar-mode being on.
If you want me to take a look at those 15ms cases, I suggest to file a
bug report with the details and a recipe.
- Re: How to measure frame rate in fps?, Arthur Miller, 2021/06/01
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/01
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/01
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/01
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/01
- Re: How to measure frame rate in fps?,
Eli Zaretskii <=
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/01
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/01
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/05
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/06
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/06
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/06
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/06
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/06
- Re: How to measure frame rate in fps?, Dmitry Gutov, 2021/06/06
- Re: How to measure frame rate in fps?, Eli Zaretskii, 2021/06/07