From: Eli Zaretskii <eliz@gnu.org>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: wyuenho@gmail.com, emacs-devel@gnu.org
Subject: Re: How to measure frame rate in fps?
Date: Sun, 06 Jun 2021 09:11:00 +0300 [thread overview]
Message-ID: <83o8cjikuj.fsf@gnu.org> (raw)
In-Reply-To: <e032895f-4a6c-1463-20ff-9b4891df156a@yandex.ru> (message from Dmitry Gutov on Sun, 6 Jun 2021 05:09:09 +0300)
> Cc: wyuenho@gmail.com, emacs-devel@gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Sun, 6 Jun 2021 05:09:09 +0300
>
> On 02.06.2021 05:29, Eli Zaretskii wrote:
> > Maybe run Emacs under 'perf' and see which GTK API call(s) take(s)
> > most of those milliseconds?
>
> I'm not sure if I've been doing it right, but the gtk functions seem to
> be taking pretty much none of the runtime:
>
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_widget_get_direction
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_widget_get_type
>
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_style_context_get_property
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_get_event_widget
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_style_context_get_type
> 0,00% emacs libgtk-3.so.0.2404.16 [.] gtk_toolbar_get_type
Yes, looks like that. Strange, since you did say disabling the tool
bar makes a prominent difference.
> The leaders looked like:
>
> 28,52% emacs emacs [.] mark_object
>
> 6,87% emacs emacs [.] assq_no_quit
>
> 3,45% emacs emacs [.] mark_char_table
>
> 3,37% emacs emacs [.] sweep_strings
>
> 2,84% emacs emacs [.] boyer_moore
Three out of 5 of the above mean Emacs spends a large proportion of
the time (35%) doing GC. I'm not sure I understand why should Emacs
perform GC while being idle: do you have some timers running, perhaps?
If this is "emacs -Q", what happens if you disable blink-cursor-mode
and global-eldoc-mode?
> 0,25% emacs emacs [.] json_to_lisp
Any idea why this is here?
(I think "perf report" supports output in the form of a call-tree,
where functions are shown with their callers? That allows to better
understand what high-level processing is running in Emacs than just
looking at the profile sorted by percents.)
next prev parent reply other threads:[~2021-06-06 6:11 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-31 13:03 How to measure frame rate in fps? Jimmy Yuen Ho Wong
2021-06-01 10:00 ` Arthur Miller
2021-06-01 11:43 ` Eli Zaretskii
2021-06-01 14:18 ` Dmitry Gutov
2021-06-01 14:43 ` Eli Zaretskii
2021-06-01 15:00 ` Dmitry Gutov
2021-06-01 15:35 ` Eli Zaretskii
2021-06-01 21:31 ` Dmitry Gutov
2021-06-02 2:29 ` Eli Zaretskii
2021-06-06 2:09 ` Dmitry Gutov
2021-06-06 6:11 ` Eli Zaretskii [this message]
2021-06-06 12:00 ` Dmitry Gutov
2021-06-06 12:36 ` Eli Zaretskii
2021-06-06 16:48 ` Dmitry Gutov
2021-06-06 17:19 ` Eli Zaretskii
2021-06-06 23:31 ` Dmitry Gutov
2021-06-07 12:33 ` Eli Zaretskii
2021-06-06 18:10 ` Stefan Monnier
2021-06-06 23:35 ` Dmitry Gutov
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