From: Alan Mackenzie <acm@muc.de>
To: Juanma Barranquero <lekktu@gmail.com>
Cc: Paul Eggert <eggert@cs.ucla.edu>, 14886@debbugs.gnu.org
Subject: bug#14886: Fwd: bug#14886: Fwd: A significant slowdown calling font-lock-fontify-buffer from a hook
Date: Fri, 26 Jul 2013 19:44:28 +0000 [thread overview]
Message-ID: <20130726194428.GA3974@acm.acm> (raw)
In-Reply-To: <CAAeL0SRqVotOMMFmxtvJ7oaZy4yoLPhm2aMZmmx-Z9MpGmzZ8w@mail.gmail.com>
Hi, Juanma.
On Thu, Jul 25, 2013 at 08:53:44AM +0200, Juanma Barranquero wrote:
> On Thu, Jul 25, 2013 at 3:24 AM, Stefan Monnier
> <monnier@iro.umontreal.ca> wrote:
> > I don't see why any of those 3 functions shouldn't be called from
> > a hook, tho.
> Well, it's not that you *must* not call it from a hook, is that if you
> call it when starting Emacs, you can have an unacceptable delay. No
> one on his/her sane mind wants to wait a long time (almost one minute
> in my current setup) to open a file that could be opened in less than
> 1s.
Running
emacs -Q --eval "(progn (add-hook 'prog-mode-hook #'font-lock-fontify-buffer) (setq debug-on-error t))" src/xdisp.c
on Emacs 24.3 (I've added a setting of `debug-on-error', and removed the
final `kill-emacs'), goes quickly. This suggests that the buffer isn't
fully fontified - instead, merely that the first window of it gets
fontified by jit-lock.
> > Silent errors are bugs. Please try and find what happens with
> > the error message.
The debug-on-error isn't triggered. My guess that an error occurred
seems to be wrong.
In the trunk, the entire buffer seems to get fontified, taking ~28s on my
machine. I think the definition of `font-lock-fontify-buffer' has
changed. Could this change explain the difference in timings you see?
> I think that's more like Alan's ballpark.
I'm not sure I'm getting very far, here. IIUC, the problem is that the
initial f-l-fontify-buffer is taking around 72s in some circumstances, as
opposed to 18s (on JB's machine). I can't reproduce the problem.
> J
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2013-07-26 19:44 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-16 0:12 A significant slowdown calling font-lock-fontify-buffer from a hook Juanma Barranquero
2013-07-16 18:01 ` Eli Zaretskii
2013-07-16 18:26 ` Juanma Barranquero
2013-07-16 18:47 ` Eli Zaretskii
2013-07-16 23:03 ` bug#14886: Fwd: " Juanma Barranquero
2013-07-17 3:05 ` Juanma Barranquero
2013-07-17 4:02 ` Eli Zaretskii
2013-07-17 9:04 ` Juanma Barranquero
2013-07-17 11:42 ` Juanma Barranquero
2013-07-17 12:50 ` Paul Eggert
2013-07-17 13:43 ` Juanma Barranquero
2013-07-17 13:59 ` Paul Eggert
2013-07-17 15:19 ` Juanma Barranquero
2013-07-17 15:57 ` Glenn Morris
2013-07-17 16:56 ` Juanma Barranquero
2013-07-22 4:20 ` Stefan Monnier
2013-07-22 22:11 ` Juanma Barranquero
[not found] ` <CAAeL0STtrBnWTbc0FSPn6XHArcDtxHwzNVaijvyG5bVKMLRo+w@mail.gmail.com>
2013-07-24 19:30 ` bug#14886: Fwd: " Alan Mackenzie
2013-07-24 21:29 ` Juanma Barranquero
2013-07-25 1:24 ` Stefan Monnier
2013-07-25 6:53 ` Juanma Barranquero
2013-07-26 19:44 ` Alan Mackenzie [this message]
2013-07-26 21:32 ` Juanma Barranquero
2013-07-27 9:35 ` Alan Mackenzie
2013-07-27 10:10 ` Juanma Barranquero
2013-07-27 10:20 ` martin rudalics
2013-07-27 14:03 ` Stefan Monnier
2013-07-28 9:58 ` Alan Mackenzie
2019-10-30 12:52 ` Lars Ingebrigtsen
2013-07-17 15:04 ` Eli Zaretskii
2013-07-17 15:16 ` Juanma Barranquero
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