From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Richard Stallman <rms@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: Loading souce Elisp faster
Date: Mon, 25 Feb 2013 10:19:06 -0500 [thread overview]
Message-ID: <jwvip5gtomr.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <E1U9wT9-0008Ec-H7@fencepost.gnu.org> (Richard Stallman's message of "Mon, 25 Feb 2013 06:43:43 -0500")
> It used to be the case that compiling one's .emacs was silly because it
> provided no measurable speed difference. But nowadays this is not true
> any more: loading a source Elisp file is significantly slower because it
> goes through load-with-code-conversion.
> Is the slowdown due to heuristically recognizing the encoding?
The fast path (used by elc) parses the data straight from the file,
whereas the slow path loads the file into a buffer (which includes any
decoding if needed) and only then passes the resulting byte-stream to
the parser.
The difference is definitely noticeable.
> Even changing the default might break things for users.
Indeed. I think the breakage would be reasonably limited, so I'd be
willing to take this risk, but I'd rather avoid having to go to the end
of the file looking for a coding: cookie.
Stefan
next prev parent reply other threads:[~2013-02-25 15:19 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-25 1:40 Loading souce Elisp faster Stefan Monnier
2013-02-25 1:53 ` Lennart Borgman
2013-02-25 2:53 ` Stefan Monnier
2013-02-25 2:55 ` Lennart Borgman
2013-02-25 3:57 ` Stefan Monnier
2013-02-25 4:35 ` Stephen J. Turnbull
2013-02-25 4:51 ` Stefan Monnier
2013-02-25 5:24 ` Paul Eggert
2013-02-25 6:12 ` Xue Fuqiao
2013-02-25 15:39 ` Eli Zaretskii
2013-02-25 18:41 ` Paul Eggert
2013-02-26 7:23 ` Werner LEMBERG
2013-02-26 8:48 ` Andreas Schwab
2013-02-25 5:47 ` Leo Liu
2013-02-25 16:28 ` Ted Zlatanov
2013-02-27 4:18 ` Kenichi Handa
2013-02-27 13:48 ` Stefan Monnier
2013-02-27 14:50 ` Drew Adams
2013-02-27 17:49 ` Werner LEMBERG
2013-02-27 14:28 ` Richard Stallman
2013-02-28 14:10 ` Kenichi Handa
2013-03-01 2:12 ` Richard Stallman
2013-03-02 12:52 ` Kenichi Handa
2013-03-03 0:35 ` Richard Stallman
2013-03-10 15:19 ` handa
2013-03-11 1:19 ` Richard Stallman
2013-03-15 16:20 ` handa
2013-03-20 8:15 ` Kenichi Handa
2013-02-25 7:24 ` Achim Gratz
2013-02-25 11:43 ` Richard Stallman
2013-02-25 15:19 ` Stefan Monnier [this message]
2013-02-25 15:36 ` Drew Adams
2013-02-25 16:09 ` Stefan Monnier
2013-02-25 16:31 ` Lennart Borgman
2013-02-25 18:31 ` Stefan Monnier
2013-02-25 19:20 ` Lennart Borgman
2013-02-25 20:53 ` Stefan Monnier
2013-02-25 20:57 ` Lennart Borgman
2013-02-25 21:37 ` Stefan Monnier
2013-02-25 21:57 ` Lennart Borgman
2013-02-25 23:59 ` Lennart Borgman
2013-02-26 17:27 ` Achim Gratz
2013-02-26 21:38 ` Lennart Borgman
2013-02-26 21:43 ` Dmitry Gutov
2013-02-26 21:47 ` Lennart Borgman
2013-02-26 4:54 ` Stephen J. Turnbull
2013-02-26 8:29 ` Ulrich Mueller
2013-02-25 21:51 ` Richard Stallman
2013-02-25 23:54 ` Stefan Monnier
2013-02-25 15:35 ` Drew Adams
2013-02-25 13:33 ` Kenichi Handa
2013-02-25 13:50 ` Xue Fuqiao
2013-02-25 15:35 ` Drew Adams
2013-02-25 15:52 ` Eli Zaretskii
2013-02-25 22:39 ` Xue Fuqiao
2013-02-26 3:48 ` Eli Zaretskii
2013-02-26 10:44 ` Xue Fuqiao
2013-02-26 17:02 ` Eli Zaretskii
2013-02-25 15:35 ` Drew Adams
2013-02-25 16:45 ` David Engster
2013-02-26 12:56 ` Richard Stallman
2013-02-26 16:26 ` David Engster
2013-02-26 20:19 ` Richard Stallman
2013-02-26 21:00 ` David Engster
2013-02-26 21:12 ` Eli Zaretskii
2013-02-26 21:18 ` David Engster
2013-02-26 22:40 ` Xue Fuqiao
2013-02-26 22:51 ` David Engster
2013-02-27 0:44 ` Drew Adams
2013-02-27 1:22 ` Stefan Monnier
2013-02-27 1:56 ` Lennart Borgman
2013-02-27 14:28 ` Richard Stallman
2013-02-27 15:21 ` Stefan Monnier
2013-02-27 17:21 ` Lennart Borgman
2013-02-27 18:31 ` Achim Gratz
2013-02-27 18:39 ` Drew Adams
2013-02-27 19:28 ` Achim Gratz
2013-02-27 22:32 ` Xue Fuqiao
2013-02-27 18:43 ` Lennart Borgman
2013-02-27 4:49 ` Kenichi Handa
2013-02-27 14:27 ` Richard Stallman
2013-02-26 16:57 ` Eli Zaretskii
2013-02-26 20:19 ` Richard Stallman
2013-02-26 20:45 ` Eli Zaretskii
2013-02-27 2:22 ` Stephen J. Turnbull
2013-02-25 21:12 ` Ivan Kanis
2013-02-25 22:47 ` Glenn Morris
2013-02-25 21:17 ` Barry Warsaw
2013-02-26 7:10 ` Thierry Volpiatto
2013-02-26 7:59 ` Andreas Röhler
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