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From: Karl Voit <devnull@Karl-Voit.at>
To: emacs-orgmode@gnu.org
Subject: Re: [patch suggestion] Mitigating the poor Emacs performance on huge org files: Do not use overlays for PROPERTY and LOGBOOK drawers
Date: Thu, 7 May 2020 09:18:38 +0200
Message-ID: <2020-05-07T09-08-12@devnull.Karl-Voit.at> (raw)
In-Reply-To: <2020-05-04T18-47-10@devnull.Karl-Voit.at>

Hi,

* Karl Voit <devnull@Karl-Voit.at> wrote:
> Hi Ihor,
>
> * Ihor Radchenko <yantar92@gmail.com> wrote:
>>
>> So far, I came up with the following partial solution searching and
>> showing hidden text.
>>
>> (defun org-find-text-property-region (pos prop)
>> (define-advice isearch-search-string (:after (&rest _) put-overlay)
>> (defun org-restore-invisibility-specs (&rest _)
>> (add-hook 'post-command-hook #'org-restore-invisibility-specs)
>> (defun org-flag-region (from to flag spec)
>> (defun org-unfontify-region (beg end &optional _maybe_loudly)
>
> After a couple of hours working with these patches, my feedback is
> very positive. Besides some visual glitches when creating a new
> heading with org-expiry-insinuate activated (which automatically
> adds :CREATED: properties), I could not detect any side-effect so
> far (will keep testing).
>
> The visual glitch looks like that:
>
>:PROPERTIES:X:CREATED:  [2020-05-04 Mon 18>54]
> X
>
> ... with "X" being my character that symbolizes collapsed content.
> The way it looked without the patch was a simple collapsed property
> drawer.

Here some hard numbers to demonstrate the impact:

my-org-agenda: from 11-16s down to 10 -> not much of a difference

helm-org-contacts-refresh-cache: 29-59s down to 2½ -> HUGE

Emacs boot time: 50-65s down to 10 -> HUGE

Navigating the cursor in large Org files -> HUGE subjective impact

>>> Anyway, the real fix should come from Emacs itself. There are ways to
>>> make overlays faster. These ways have already been discussed on the
>>> Emacs devel mailing list, but no one implemented them. It is a bit sad
>>> that we have to find workarounds for that.
>>
>> I guess that it is a very old story starting from the times when XEmacs
>> was a thing [1]. I recently heard about binary tree implementation of
>> overlays (there should be a branch in emacs git repo) [2], but there was
>> no update on that branch for a while. So, I do not have much hope on
>> Emacs implementing efficient overlay access in the near future. (And I
>> have problems with huge org files already).
>
> I can not express how this also reflects my personal situation.
>
>> [1] https://www.reddit.com/r/planetemacs/comments/e9lgwn/history_of_lucid_emacs_fsf_emacs_schism/
>> [2] https://lists.gnu.org/archive/html/emacs-devel/2019-12/msg00323.html
>
> [3] https://karl-voit.at/2020/05/03/current-org-files
>

-- 
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  reply	other threads:[~2020-05-07  7:19 UTC|newest]

Thread overview: 85+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-24  6:55 Ihor Radchenko
2020-04-24  8:02 ` Nicolas Goaziou
2020-04-25  0:29   ` stardiviner
2020-04-26 16:04   ` Ihor Radchenko
2020-05-04 16:56     ` Karl Voit
2020-05-07  7:18       ` Karl Voit [this message]
2020-05-09 15:43       ` Ihor Radchenko
2020-05-07 11:04     ` Christian Heinrich
2020-05-09 15:46       ` Ihor Radchenko
2020-05-08 16:38     ` Nicolas Goaziou
2020-05-09 13:58       ` Nicolas Goaziou
2020-05-09 16:22         ` Ihor Radchenko
2020-05-09 17:21           ` Nicolas Goaziou
2020-05-10  5:25             ` Ihor Radchenko
2020-05-10  9:47               ` Nicolas Goaziou
2020-05-10 13:29                 ` Ihor Radchenko
2020-05-10 14:46                   ` Nicolas Goaziou
2020-05-10 16:21                     ` Ihor Radchenko
2020-05-10 16:38                       ` Nicolas Goaziou
2020-05-10 17:08                         ` Ihor Radchenko
2020-05-10 19:38                           ` Nicolas Goaziou
2020-05-09 15:40       ` Ihor Radchenko
2020-05-09 16:30         ` Ihor Radchenko
2020-05-09 17:32           ` Nicolas Goaziou
2020-05-09 18:06             ` Ihor Radchenko
2020-05-10 14:59               ` Nicolas Goaziou
2020-05-10 15:15                 ` Kyle Meyer
2020-05-10 16:30                 ` Ihor Radchenko
2020-05-10 19:32                   ` Nicolas Goaziou
2020-05-12 10:03                     ` Nicolas Goaziou
2020-05-17 15:00                     ` Ihor Radchenko
2020-05-17 15:40                       ` Ihor Radchenko
2020-05-18 14:35                         ` Nicolas Goaziou
2020-05-18 16:52                           ` Ihor Radchenko
2020-05-19 13:07                             ` Nicolas Goaziou
2020-05-23 13:52                               ` Ihor Radchenko
2020-05-23 13:53                                 ` Ihor Radchenko
2020-05-23 15:26                                   ` Ihor Radchenko
2020-05-26  8:33                                 ` Nicolas Goaziou
2020-06-02  9:21                                   ` Ihor Radchenko
2020-06-02  9:23                                     ` Ihor Radchenko
2020-06-02 12:10                                       ` Bastien
2020-06-02 13:12                                         ` Ihor Radchenko
2020-06-02 13:23                                           ` Bastien
2020-06-02 13:30                                             ` Ihor Radchenko
2020-06-02  9:25                                     ` Ihor Radchenko
2020-06-05  7:26                                     ` Nicolas Goaziou
2020-06-05  8:18                                       ` Ihor Radchenko
2020-06-05 13:50                                         ` Nicolas Goaziou
2020-06-08  5:05                                           ` Ihor Radchenko
2020-06-08  5:06                                             ` Ihor Radchenko
2020-06-08  5:08                                             ` Ihor Radchenko
2020-06-10 17:14                                             ` Nicolas Goaziou
2020-06-21  9:52                                               ` Ihor Radchenko
2020-06-21 15:01                                                 ` Nicolas Goaziou
2020-08-11  6:45                                               ` Ihor Radchenko
2020-08-11 23:07                                                 ` Kyle Meyer
2020-08-12  6:29                                                   ` Ihor Radchenko
2020-09-20  5:53                                                     ` Ihor Radchenko
2020-09-20 11:45                                                       ` Kévin Le Gouguec
2020-09-22  9:05                                                         ` Ihor Radchenko
2020-09-22 10:00                                                           ` Ihor Radchenko
2020-09-23  6:16                                                             ` Kévin Le Gouguec
2020-09-23  6:48                                                               ` Ihor Radchenko
2020-09-23  7:09                                                                 ` Bastien
2020-09-23  7:30                                                                   ` Ihor Radchenko
2020-09-24 18:07                                                                 ` Kévin Le Gouguec
2020-09-25  2:16                                                                   ` Ihor Radchenko
2020-12-15 17:38                                                                     ` [9.4] Fixing logbook visibility during isearch Kévin Le Gouguec
2020-12-16  3:15                                                                       ` Ihor Radchenko
2020-12-16 18:05                                                                         ` Kévin Le Gouguec
2020-12-17  3:18                                                                           ` Ihor Radchenko
2020-12-17 14:50                                                                             ` Kévin Le Gouguec
2020-12-18  2:23                                                                               ` Ihor Radchenko
2020-12-24 23:37                                                                                 ` Kévin Le Gouguec
2020-12-25  2:51                                                                                   ` Ihor Radchenko
2020-12-25 10:59                                                                                     ` Kévin Le Gouguec
2020-12-25 12:32                                                                                       ` Ihor Radchenko
2020-12-25 21:35                                                                                     ` Kévin Le Gouguec
2020-12-26  4:14                                                                                       ` Ihor Radchenko
2020-12-26 11:44                                                                                         ` Kévin Le Gouguec
2020-12-26 12:22                                                                                           ` Ihor Radchenko
2020-12-04  5:58                                                       ` [patch suggestion] Mitigating the poor Emacs performance on huge org files: Do not use overlays for PROPERTY and LOGBOOK drawers Ihor Radchenko
2021-03-21  9:09                                                         ` Ihor Radchenko
2021-05-03 17:28                                                           ` Bastien

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