unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: Eli Zaretskii <eliz@gnu.org>,
	stefan@marxist.se, rms@gnu.org, 19776@debbugs.gnu.org
Subject: bug#19776: 25.0.50; HTML rendering is very slow
Date: Sun, 24 Oct 2021 18:14:41 -0400	[thread overview]
Message-ID: <jwvbl3e6pgk.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87fssq2orj.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sun, 24 Oct 2021 21:42:24 +0200")

Lars Ingebrigtsen [2021-10-24 21:42:24] wrote:
> Eli Zaretskii <eliz@gnu.org> writes:
>> When the timer expires, it delivers a signal, but the signal handler
>> only sets a flag.  The flag is checked when we call maybe_quit, which
>> calls do_pending_atimers.  So a Lisp program that hogs the CPU, and
>> never calls any function that calls maybe_quit, will indeed block
>> atimers.  However, this is rare for real-life Lisp programs, because
>> several core primitives call maybe_quit from time to time.
>
> The use case here was for CPU-hogging Lisp code, though, like
> `shr-insert-document'.  And it doesn't seem to hit any maybe_quits in
> this very synthetic test:

Basically all loops should call `maybe_quit`, so the issue is probably
not that `maybe_quit` is not called often enough, but that for some
reason we don't set the vars that it checks or something like that.


        Stefan






  parent reply	other threads:[~2021-10-24 22:14 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-04 23:03 bug#19776: 25.0.50; HTML rendering is very slow Richard Stallman
2015-02-05 11:42 ` Nicolas Richard
2015-02-05 16:14   ` Eli Zaretskii
2015-12-25 22:34 ` Lars Ingebrigtsen
2015-12-26  6:14   ` Richard Stallman
2018-04-15 21:49     ` Lars Ingebrigtsen
2018-04-15 22:00       ` Lars Ingebrigtsen
2021-10-22 23:59         ` Stefan Kangas
2021-10-23  7:27           ` Eli Zaretskii
2021-10-24 12:43             ` Lars Ingebrigtsen
2021-10-24 14:04               ` Eli Zaretskii
2021-10-24 14:25                 ` Lars Ingebrigtsen
2021-10-24 16:22                   ` Lars Ingebrigtsen
2021-10-24 17:06                     ` Eli Zaretskii
2021-10-24 17:56                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-10-24 18:45                       ` Lars Ingebrigtsen
2021-10-24 19:10                       ` Lars Ingebrigtsen
2021-10-24 19:18                         ` Lars Ingebrigtsen
2021-10-24 19:24                         ` Eli Zaretskii
2021-10-24 19:42                           ` Lars Ingebrigtsen
2021-10-24 20:09                             ` Lars Ingebrigtsen
2021-10-24 20:14                               ` Lars Ingebrigtsen
2021-10-24 20:18                                 ` Lars Ingebrigtsen
2021-10-24 20:40                                   ` Lars Ingebrigtsen
2021-10-24 21:52                                     ` Stefan Kangas
2021-10-25 13:08                                       ` Lars Ingebrigtsen
2021-10-25 13:20                                         ` Eli Zaretskii
2021-10-25 13:33                                           ` Lars Ingebrigtsen
2021-10-29 17:28                                             ` Stefan Kangas
2021-10-29 17:38                                               ` Lars Ingebrigtsen
2021-10-29 17:59                                                 ` bug#51490: Show an indicator when Emacs is busy somewhere in the Emacs window Stefan Kangas
2021-10-30 12:40                                                   ` Lars Ingebrigtsen
2022-09-19 20:16                                                     ` Lars Ingebrigtsen
2022-09-20 11:36                                                       ` Eli Zaretskii
2022-09-21 11:06                                                         ` Lars Ingebrigtsen
2022-09-21 11:49                                                           ` Eli Zaretskii
2022-09-21 12:01                                                             ` Lars Ingebrigtsen
2022-09-21 12:34                                                               ` Stefan Kangas
2022-09-21 13:08                                                                 ` Eli Zaretskii
2022-09-21 13:05                                                               ` Eli Zaretskii
2022-09-21 13:32                                                                 ` Lars Ingebrigtsen
2022-09-21 14:01                                                                   ` Eli Zaretskii
2022-09-21 16:02                                                                     ` Gregory Heytings
2022-09-21 16:21                                                                       ` Eli Zaretskii
2022-09-21 17:11                                                                         ` Gregory Heytings
2022-09-22  6:28                                                                           ` Eli Zaretskii
2022-09-22 10:54                                                                             ` Lars Ingebrigtsen
2022-09-22 12:33                                                                               ` Eli Zaretskii
2022-09-22 13:08                                                                                 ` Gregory Heytings
2022-09-22 14:03                                                                                   ` Eli Zaretskii
2022-09-22 15:57                                                                                     ` Gregory Heytings
2022-09-22 16:21                                                                                       ` Eli Zaretskii
2022-09-23 15:06                                                                                         ` Lars Ingebrigtsen
2022-09-23 15:45                                                                                           ` Eli Zaretskii
2022-09-22 13:02                                                                             ` Gregory Heytings
2022-09-22 13:59                                                                               ` Eli Zaretskii
2021-10-24 22:14                             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2021-10-24 22:28                               ` bug#19776: 25.0.50; HTML rendering is very slow Lars Ingebrigtsen
2021-10-25  7:33                                 ` Andreas Schwab
2021-10-25 13:11                                   ` Lars Ingebrigtsen
2021-10-25 13:33                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-10-25 13:46                                       ` Andreas Schwab
2021-10-25 13:52                                         ` Lars Ingebrigtsen
2021-10-25 14:05                                           ` Lars Ingebrigtsen
2021-10-25 14:16                                             ` Eli Zaretskii
2021-10-25 14:25                                               ` Lars Ingebrigtsen
2021-10-25 14:31                                             ` Andreas Schwab
2021-10-25 14:36                                               ` Lars Ingebrigtsen
2021-10-25 14:48                                                 ` Lars Ingebrigtsen
2021-10-25 14:32                                             ` Lars Ingebrigtsen
2021-10-25 14:00                                 ` Eli Zaretskii
2021-10-25 14:35                                   ` Andreas Schwab
2021-10-25 15:05                                     ` bug#19776: timerfd doesn't work when busy-looping Lars Ingebrigtsen
2021-10-25 15:59                                       ` Eli Zaretskii
2021-10-25 16:16                                         ` Lars Ingebrigtsen
2021-10-25 16:41                                           ` bug#19776: The hourglass Lars Ingebrigtsen
2021-10-25 16:51                                             ` Eli Zaretskii
2021-10-25 16:57                                               ` Lars Ingebrigtsen
2021-10-25 16:09                                 ` bug#19776: 25.0.50; HTML rendering is very slow Eli Zaretskii
2021-10-25 16:19                                   ` Lars Ingebrigtsen
2021-10-25 16:53                                     ` Eli Zaretskii
2021-10-25 17:01                                       ` Lars Ingebrigtsen
2021-10-25 17:07                                         ` Eli Zaretskii
2021-10-25 17:11                                           ` Andreas Schwab
2021-10-25 17:12                                             ` Eli Zaretskii
2021-10-25 17:52                                               ` Andreas Schwab
2021-10-25 18:25                                                 ` Eli Zaretskii
2021-10-25  2:17           ` Richard Stallman
2021-10-25 13:10             ` Lars Ingebrigtsen
2021-10-27 12:59 ` Lars Ingebrigtsen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=jwvbl3e6pgk.fsf-monnier+emacs@gnu.org \
    --to=bug-gnu-emacs@gnu.org \
    --cc=19776@debbugs.gnu.org \
    --cc=eliz@gnu.org \
    --cc=larsi@gnus.org \
    --cc=monnier@iro.umontreal.ca \
    --cc=rms@gnu.org \
    --cc=stefan@marxist.se \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).