GNU bug report logs - #76609
31.0.50; The 0.1s repeat timer is very CPU-intensive; it might be a bug?

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Eval Exec <execvy <at> gmail.com>
Cc: 76609 <at> debbugs.gnu.org
Subject: bug#76609: 31.0.50; The 0.1s repeat timer is very CPU-intensive;  it might be a bug?
Date: Thu, 27 Feb 2025 17:37:33 +0200

> From: Eval Exec <execvy <at> gmail.com>
> Date: Thu, 27 Feb 2025 23:10:35 +0800
> Cc: 76609 <at> debbugs.gnu.org
> 
> > What timers really need to run 10 times a second?
> 
> I'd like to create a timer to dynamically update the tab bar, similar to the effect shown in this video:
> [https://imgur.com/a/2QAtDQC]. 

Then why are you worried by the CPU usage?  This is similar to
performing redisplay of a portion of a window because the user presses
keys at 10 Hz rate.  If I press and hold the <RIGHT> arrow, I get
similar CPU usage (my keyboard auto-repeat rate is about 50/sec).
Each <RIGHT> keypress causes Emacs to draw 2 characters: the one from
which the cursor moves and the one to which it moves.

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