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Re: Slow fontification in C mode buffers
From: |
Kan-Ru Chen |
Subject: |
Re: Slow fontification in C mode buffers |
Date: |
Sun, 18 Dec 2011 00:06:00 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
Alan Mackenzie <address@hidden> writes:
>> I forgot that I've set font-lock-maximum-decoration to 2. I tested with
>> emacs -Q again. The first font-lock is slow, but pretty fast after
>> that. It occasionally hangs when I C-v the buffer. Below is the
>> elp-results:
>
> You haven't said exactly how many operations, or what, you performed
> before doing elp-results. In my elp results below, I've:
> (i) Loaded elp and instrumented the c- package.
> (ii) Loaded your file.
> (iii) Done M-x c++-mode
> (iv) Done M-x elp-results (to clear the accumulated times)
> (v) M->
> (vi) M-x elp-results.
Please forgive me for using the other files, it is closer to the real
case. You can get the file from
https://hg.mozilla.org/mozilla-central/raw-file/tip/dom/base/nsDOMClassInfo.cpp
(i) Loaded elp and instrumented the c- package.
(ii) Loaded nsDOMClassInfo.cpp
(iii) Done M-x c++-mode
(iv) Done M-x elp-results (to clear the accumulated times)
(v) C-s battery until failing to find
(vi) M-x elp-results.
Before:
c-beginning-of-decl-1 201 13.065947999
0.0650047164
c-beginning-of-statement-1 229 13.061191
0.0570357685
c-crosses-statement-barrier-p 35466 11.622212999
0.0003277001
c-font-lock-declarations 16 9.4090929999
0.5880683124
c-find-decl-spots 16 9.4089879999
0.5880617499
c-at-macro-vsemi-p 46569 6.6139159999
0.0001420240
c-in-literal 46569 5.4569670000
0.0001171802
c-literal-limits 51666 3.1393819999
6.076...e-05
c-backward-sws 176682 1.6644079999
9.420...e-06
c-beginning-of-macro 104078 0.5568430000
5.350...e-06
c-state-safe-place 72459 0.3154430000
4.353...e-06
c-parse-state 225 0.1421229999
0.0006316577
c-parse-state-1 225 0.1385559999
0.0006158044
c-font-lock-enclosing-decls 16 0.1365140000
0.0085321250
c-append-to-state-cache 196 0.0641449999
0.0003272704
After:
c-beginning-of-decl-1 137 9.6732900000
0.0706079562
c-beginning-of-statement-1 165 9.6693369999
0.0586020424
c-crosses-statement-barrier-p 25584 8.5505400000
0.0003342143
c-font-lock-declarations 16 6.059768
0.3787355
c-find-decl-spots 16 6.059666
0.378729125
c-at-macro-vsemi-p 35149 4.7420429999
0.0001349126
c-in-literal 35149 4.0154739999
0.0001142414
c-literal-limits 38962 2.5425719999
6.525...e-05
c-backward-sws 128214 1.1421259999
8.907...e-06
c-beginning-of-macro 78145 0.3845660000
4.921...e-06
c-state-safe-place 54703 0.2419970000
4.423...e-06
c-parse-state 317 0.1464209999
0.0004618958
c-font-lock-enclosing-decls 16 0.137945
0.0086215625
c-parse-state-1 317 0.1331939999
0.0004201703
c-font-lock-declarators 24 0.065522
0.0027300833
--
Kanru
- Re: Slow fontification in C mode buffers, (continued)
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/14
- Re: Slow fontification in C mode buffers, Kan-Ru Chen, 2011/12/14
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/15
- Re: Slow fontification in C mode buffers, Kan-Ru Chen, 2011/12/15
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/15
- Re: Slow fontification in C mode buffers, Kan-Ru Chen, 2011/12/15
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/16
- Re: Slow fontification in C mode buffers,
Kan-Ru Chen <=
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/21
- Re: Slow fontification in C mode buffers, Geoff Gole, 2011/12/21
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/21
- Re: Slow fontification in C mode buffers, Geoff Gole, 2011/12/21
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/21
- Re: Slow fontification in C mode buffers, Eli Zaretskii, 2011/12/21
- Re: Slow fontification in C mode buffers, Geoff Gole, 2011/12/21
- Re: Slow fontification in C mode buffers, Eli Zaretskii, 2011/12/21
- Re: Slow fontification in C mode buffers, Kentaro NAKAZAWA, 2011/12/23
- Re: Slow fontification in C mode buffers, Alan Mackenzie, 2011/12/23