From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
To: Thierry Banel <tbanelwebmin@free.fr>
Cc: emacs-orgmode@gnu.org
Subject: Re: spee-up table refresh
Date: Mon, 09 Jan 2017 00:24:10 +0100 [thread overview]
Message-ID: <87pojxyw2t.fsf@nicolasgoaziou.fr> (raw)
In-Reply-To: <587276BB.9000008@free.fr> (Thierry Banel's message of "Sun, 08 Jan 2017 18:28:27 +0100")
Hello,
> I don't understand those 3 lines
The prevent matching a table below
#+begin_example
| I'm not a table |
#+end_example
> without them (the 688 tests work as expected). Those lines indirectly
> call (org-element--cache-put) a quadratic number of times. For a 1000
> rows table this is 501500 times (about 1000x1000/2 times).
Note that recalculating a table is inherently quadratic.
> Here is a test case.
>
> 1- First create a 1000 row table:
>
> #+BEGIN_SRC elisp :results none
> (goto-char (point-max))
> (let ((i 1000))
> (while (> i 0)
> (insert (format "| %4s | |\n" i))
> (setq i (1- i))))
> (insert "#+TBLFM: $2=$1*10\n")
> #+END_SRC
>
> 2- Then, with point in the table, type C-u C-c *
I limited calls to `org-element-at-point'. It should be much faster now.
Thank you.
Regards,
--
Nicolas Goaziou
next prev parent reply other threads:[~2017-01-08 23:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-08 17:28 spee-up table refresh Thierry Banel
2017-01-08 23:24 ` Nicolas Goaziou [this message]
2017-01-09 22:27 ` Thierry Banel
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