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bug#19776: 25.0.50; HTML rendering is very slow
From: |
Nicolas Richard |
Subject: |
bug#19776: 25.0.50; HTML rendering is very slow |
Date: |
Thu, 05 Feb 2015 12:42:21 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
Richard Stallman <rms@gnu.org> writes:
> The automatic HTML rendering of the following message takes several
> seconds on this X60 which for most things is blindingly fast.
FWIW, here's the elp-results on my machine (after instrumenting the
package shr, and calling shr-render-buffer) :
shr-descend 6227 408.78522387 0.0656472175
shr-tag-table 1062 189.46034310 0.1783995697
shr-tag-table-1 1062 189.33667913 0.1782831253
shr-make-table 3186 187.52006959 0.0588575234
shr-make-table-1 1070 164.06574762 0.1533324744
shr-render-td 3428 163.98280975 0.0478362922
shr-render-buffer 1 28.734523319 28.734523319
shr-insert-document 1 28.712268988 28.712268988
shr-tag-body 1 28.690722764 28.690722764
shr-insert-table 1062 0.8013559019 0.0007545724
shr-insert 4126 0.283103186 6.861...e-05
shr-tag-a 822 0.2324357269 0.0002827685
shr-column-specs 1062 0.1266108010 0.0001192192
shr-tag-div 198 0.0957929849 0.0004838029
shr-max-columns 2124 0.0947569080 4.461...e-05
shr-colorize-region 634 0.075634319 0.0001192970
shr-parse-style 548 0.0700457249 0.0001278206
shr-color-check 141 0.0599092470 0.0004248882
shr-tag-img 333 0.058440363 0.0001754965
shr-color-visible 141 0.0464957430 0.0003297570
shr-urlify 212 0.0396780100 0.0001871604
shr-count 5966 0.0346115289 5.801...e-06
shr-table-widths 1062 0.0337347569 3.176...e-05
shr-add-font 3462 0.0260796149 7.533...e-06
shr-find-fill-point 494 0.0245121429 4.961...e-05
shr-indent 10019 0.0231243120 2.308...e-06
shr-remove-trailing-whitespace 1 0.02058152 0.02058152
shr-pro-rate-columns 1062 0.0123682060 1.164...e-05
shr-insert-table-ruler 4045 0.0103226100 2.551...e-06
shr-ensure-paragraph 1064 0.0096426120 9.062...e-06
shr-color->hexadecimal 282 0.0084433179 2.994...e-05
shr-fold-text 23 0.0077441709 0.0003367030
shr-ensure-newline 396 0.0067178849 1.696...e-05
shr-expand-url 545 0.0023009930 4.222...e-06
shr-tag-br 102 0.002192799 2.149...e-05
shr-tag-comment 289 0.0007590249 2.626...e-06
shr-tag-title 1 0.00071629 0.00071629
shr-heading 1 0.000702604 0.000702604
shr-encode-url 46 0.0006519919 1.417...e-05
shr-fontize-dom 1 0.000606771 0.000606771
shr-tag-span 9 0.000584241 6.491...e-05
shr-previous-newline-padding-width 126 0.0004090820 3.246...e-06
shr-image-displayer 23 8.367...e-05 3.638...e-06
shr-tag-style 1 2.438e-06 2.438e-06
> Since there is no indication on the screen of what is happening,
> I think that I failed to type a command, and type it again.
>
> It needs to be sped up, but in the short term it needs to display
> "Rendering html..." in the echo area.
A patch is attached but I don't know if this is the right place for it
(shr-insert-document).
modified lisp/net/shr.el
@@ -208,7 +208,8 @@ (defun shr-insert-document (dom)
(shr-depth 0)
(shr-warning nil)
(shr-internal-width (or shr-width (1- (window-width)))))
- (shr-descend dom)
+ (with-temp-message "Rendering HTML..."
+ (shr-descend dom))
(shr-remove-trailing-whitespace start (point))
(when shr-warning
(message "%s" shr-warning))))
--
Nicolas