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From: Eli Zaretskii <eliz@gnu.org>
To: hongyi.zhao@gmail.com
Cc: emacs-devel@gnu.org
Subject: Re: Run `M-x list-input-methods` and then scroll down the screen in input method panel using the mouse or arrow key will cause Emacs unresponsive for about 1 minite.
Date: Sat, 19 Jun 2021 14:00:27 +0300	[thread overview]
Message-ID: <83r1gyw244.fsf@gnu.org> (raw)
In-Reply-To: <83sg1ew2bs.fsf@gnu.org> (message from Eli Zaretskii on Sat, 19 Jun 2021 13:55:51 +0300)

> Date: Sat, 19 Jun 2021 13:55:51 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: emacs-devel@gnu.org
> 
> The fast version is an optimized build, the slow one is unoptimized.
> That explains at least part of the slowness.  The fast version also
> doesn't include any text-shaping engine, which might speed up Emacs,
> but prevents it from correctly displaying complex scripts.
> 
> What are the Emacs versions of the two builds?

Sorry, I see now that its Emacs 26.3 and 28.

And I guess the Emacs 28 build also used the default optimization
options, unlike what I said before.

So the only difference I see is the text-shaping engine that is
missing in the "fast" version.  I don't think I understand why that
should have such a profound effect on the speed of finding fonts,
sorry.



  reply	other threads:[~2021-06-19 11:00 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-19  5:05 Run `M-x list-input-methods` and then scroll down the screen in input method panel using the mouse or arrow key will cause Emacs unresponsive for about 1 minite Hongyi Zhao
2021-06-19  6:13 ` Eli Zaretskii
     [not found]   ` <CAGP6PO+5QjiB4jkk1x-VZrhm-gUzEiv7dC_sJH_gi1cRzMGu2Q@mail.gmail.com>
2021-06-19  6:57     ` Eli Zaretskii
2021-06-19  7:16       ` Hongyi Zhao
2021-06-19  9:30         ` Eli Zaretskii
2021-06-19  9:47           ` Hongyi Zhao
2021-06-19 10:03             ` Eli Zaretskii
2021-06-19 10:16               ` Hongyi Zhao
2021-06-19 10:31                 ` Eli Zaretskii
2021-06-19 10:48                   ` Hongyi Zhao
2021-06-19 10:55                     ` Eli Zaretskii
2021-06-19 11:00                       ` Eli Zaretskii [this message]
2021-06-19 13:42                         ` Hongyi Zhao
2021-06-19 13:49                           ` Eli Zaretskii
2021-06-19 14:19                             ` Hongyi Zhao
2021-06-19 14:28                               ` Eli Zaretskii
2021-06-19 15:17                                 ` Hongyi Zhao

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