From: Eli Zaretskii <eliz@gnu.org>
To: Bois Francois-Xavier <fxbois@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: web-mode.el and speed
Date: Tue, 08 Oct 2013 09:21:40 +0300 [thread overview]
Message-ID: <83y564470r.fsf@gnu.org> (raw)
In-Reply-To: <CAK1xyPMvUDzPkCgW+L9DNVfw=Cyx2a0FysS7xGWDegD9bf2rww@mail.gmail.com>
> From: Bois Francois-Xavier <fxbois@gmail.com>
> Date: Mon, 7 Oct 2013 22:21:30 +0200
> Cc: emacs-devel@gnu.org
>
> I think that a function that would not rely on regexp could improve
> drastically the performance.
> For seconds are needed to load the html5-spec page. And most of the time is
> spent identifying tags. So any micro optimization can have a huge impact.
>
> (I have previously won 20% in perfomance when I modified the tag attributes
> parser function to use chars instead of strings. I would have never thought
> that the gain would be so large)
As others have pointed out, you are trying to optimize without making
any measurements. This methodology is known to lead to wrong
conclusions. So you are well advised to try skip-chars-forward and
see if it is fast enough for your use case.
next prev parent reply other threads:[~2013-10-08 6:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-07 19:29 web-mode.el and speed Bois Francois-Xavier
2013-10-07 20:05 ` Eli Zaretskii
2013-10-07 20:21 ` Bois Francois-Xavier
2013-10-07 20:56 ` Andreas Schwab
2013-10-07 22:54 ` Stefan Monnier
2013-10-08 6:21 ` Eli Zaretskii [this message]
2013-10-09 11:04 ` Andreas Röhler
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