From: Dmitry Antipov <dmantipov@yandex.ru>
To: emacs-devel@gnu.org
Cc: Eli Zaretskii <eliz@gnu.org>, Paul Eggert <eggert@cs.ucla.edu>
Subject: Re: Long lines and bidi
Date: Mon, 11 Feb 2013 11:54:57 +0400 [thread overview]
Message-ID: <5118A3D1.2050300@yandex.ru> (raw)
In-Reply-To: <511884F5.6030806@yandex.ru>
On 02/11/2013 09:43 AM, Dmitry Antipov wrote:
> Yet another interesting profile (generated by scroll-both micro-benchmark with
> r111730) is shown below.
>
> Input is 4K lines, each line is ~27K bytes, Imla'ei (modern Arabic) script. IIUC
> this R2L text with long lines should push bidi really hard, but ... bidi core
> routines (by itself) are almost irrelevant in the profile:
>
> 39.96% emacs emacs [.] scan_buffer
> 28.72% emacs emacs [.] buf_charpos_to_bytepos
> 21.82% emacs emacs [.] buf_bytepos_to_charpos
> 0.59% emacs emacs [.] re_match_2_internal
... and with Paul's mem(r)chr patch it is:
43.38% emacs emacs [.] buf_charpos_to_bytepos
28.42% emacs emacs [.] buf_bytepos_to_charpos
13.10% emacs libc-2.16.so [.] memrchr
0.85% emacs emacs [.] re_match_2_internal
...
So I should vote YES. This is simple optimization which really makes sense,
and I suspect that the "less usual" input is, the more sense it has.
Dmitry
next prev parent reply other threads:[~2013-02-11 7:54 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-03 22:05 bug#13623: 24.3.50; Redisplay issue with transient-mark-mode Lawrence Mitchell
2013-02-04 15:49 ` Eli Zaretskii
2013-02-04 17:20 ` Lawrence Mitchell
2013-02-04 18:10 ` Eli Zaretskii
2013-02-05 4:54 ` Dmitry Antipov
2013-02-05 12:07 ` Dmitry Antipov
2013-02-05 17:46 ` Eli Zaretskii
2013-02-05 17:45 ` Eli Zaretskii
2013-02-06 7:16 ` Dmitry Antipov
2013-02-06 14:31 ` Stefan Monnier
2013-02-06 15:14 ` Dmitry Antipov
2013-02-06 18:04 ` Eli Zaretskii
2013-02-06 18:23 ` Eli Zaretskii
2013-02-06 20:30 ` Stefan Monnier
2013-02-07 3:41 ` Eli Zaretskii
2013-02-08 13:33 ` Long lines and bidi [Was: Re: bug#13623: ...] Dmitry Antipov
2013-02-08 14:07 ` Eli Zaretskii
2013-02-08 14:46 ` Long lines and bidi Eli Zaretskii
2013-02-08 16:38 ` Dmitry Antipov
2013-02-08 16:52 ` Eli Zaretskii
2013-02-09 3:34 ` Paul Eggert
2013-02-09 8:46 ` Eli Zaretskii
2013-02-09 9:05 ` Paul Eggert
2013-02-09 9:33 ` Eli Zaretskii
2013-02-11 2:33 ` Paul Eggert
2013-02-09 10:01 ` Eli Zaretskii
2013-02-10 16:57 ` Eli Zaretskii
2013-02-11 5:43 ` Dmitry Antipov
2013-02-11 7:54 ` Dmitry Antipov [this message]
2013-02-11 16:47 ` Eli Zaretskii
2013-02-11 23:55 ` Paul Eggert
2013-02-11 16:42 ` Eli Zaretskii
2013-02-11 17:53 ` Dmitry Antipov
2013-02-11 18:10 ` Eli Zaretskii
2013-02-11 18:21 ` Dmitry Antipov
2013-02-11 17:17 ` Eli Zaretskii
2013-02-11 17:55 ` Drew Adams
2013-02-11 18:13 ` Eli Zaretskii
2013-02-08 16:21 ` Long lines and bidi [Was: Re: bug#13623: ...] Dmitry Antipov
2013-02-08 17:04 ` Eli Zaretskii
2013-02-08 15:33 ` Stefan Monnier
2013-02-08 16:05 ` Eli Zaretskii
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