From: Manuel Giraud via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Po Lu <luangruo@yahoo.com>
Cc: Tim Ruffing <crypto@timruffing.de>, Eli Zaretskii <eliz@gnu.org>,
67810@debbugs.gnu.org, Stefan Kangas <stefankangas@gmail.com>
Subject: bug#67810: 29.1; fonts use synthetic bold on Linux / pgtk
Date: Sun, 14 Jan 2024 17:37:48 +0100 [thread overview]
Message-ID: <87wmsbx44j.fsf@ledu-giraud.fr> (raw)
In-Reply-To: <87ply4ypjb.fsf@yahoo.com> (Po Lu's message of "Sun, 14 Jan 2024 22:10:00 +0800")
Po Lu <luangruo@yahoo.com> writes:
> Manuel Giraud <manuel@ledu-giraud.fr> writes:
>
>> Yes. As Eli explained to me in bug#68006 (correct me if I'm wrong), the
>> image cache was designed to work with the display engine (for icons and
>> toolbars). For other usage, like image-mode for instance, we might need
>> something else.
>
> I understand you haven't made reference to the provisions for
> user-specified image caches that you have proposed in that thread, but
> it's still relevant that although such provisions will work in
> image-mode's favor, they cannot resolve the memory consumption problems
> inherent in the practice of caching scaled SVG images in the first
> place.
Yes scaled SVG tend to take much space but in the example you gave (zoom
in and out of a SVG in image-mode), I think it has more to do with the
cache not being adapted for such usage: the fact that an image spec
contains its size and is retain for 300 seconds by default (as you
said).
> Or on the flip side, performance degradation incurred by calling into
> SVG for many dozens of small icons, which are removed from the image
> cache after the eviction delay elapses without regard to their size or
> the frequency at which they are invoked.
Ok but is there such usage of SVG icons into Emacs? If there is it
would require a much more smarter cache or, even better, a fast
rasterizer.
> Worse yet, the display connection is cut when the image cache consumes
> all bitmap memory allotted by the X server to Emacs. This generates an
> asynchronous Alloc error that Emacs is not in a position to detect until
> it next returns to the event loop.
>
> With the size of images as they exist today, and the density of the
> devices on which they are displayed, I think that caching complete
> images for N number of seconds has become an outmoded solution for not
> loading images redundantly. It's unpleasant for increasing
> doc-view-resolution to force you to hold your breath before typing "n"
> in a DocView buffer, out of a sense of apprehension that the subsequent
> page might be sufficiently large to trigger such an error.
I've never hit this case but I don't have a high density display. Is it
something that happen to you regularly?
--
Manuel Giraud
next prev parent reply other threads:[~2024-01-14 16:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-13 12:03 bug#67810: 29.1; fonts use synthetic bold on Linux / pgtk Tim Ruffing
2023-12-13 12:39 ` Eli Zaretskii
2023-12-13 13:28 ` Tim Ruffing
2023-12-13 13:39 ` Eli Zaretskii
2023-12-13 15:09 ` Tim Ruffing
2023-12-13 15:43 ` Tim Ruffing
2023-12-14 0:09 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-14 7:28 ` Eli Zaretskii
2023-12-14 9:32 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-14 9:54 ` Tim Ruffing
2023-12-14 10:04 ` Eli Zaretskii
2023-12-14 10:37 ` Tim Ruffing
2023-12-14 11:19 ` Eli Zaretskii
2023-12-14 11:26 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-14 15:06 ` Tim Ruffing
2023-12-14 22:55 ` Stefan Kangas
2024-01-11 15:50 ` Tim Ruffing
2024-01-12 1:46 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-12 8:37 ` Eli Zaretskii
2024-01-12 9:59 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-12 11:46 ` Eli Zaretskii
2024-01-12 12:20 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-12 12:30 ` Eli Zaretskii
2024-01-12 13:12 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-12 14:12 ` Eli Zaretskii
2024-01-13 0:46 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-13 6:59 ` Eli Zaretskii
2024-01-14 1:02 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 6:24 ` Eli Zaretskii
2024-01-14 8:09 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 9:33 ` Eli Zaretskii
2024-01-14 13:44 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 14:03 ` Eli Zaretskii
2024-01-14 14:19 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 14:55 ` Eli Zaretskii
2024-01-15 13:11 ` Tim Ruffing
2024-01-13 6:37 ` Stefan Kangas
2024-01-14 0:55 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 5:23 ` Stefan Kangas
2024-01-14 10:20 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 12:21 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 14:10 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-14 16:37 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2024-01-15 0:36 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-15 13:56 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-15 14:02 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
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