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From: Ihor Radchenko <yantar92@gmail.com>
To: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Cc: 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: Sun, 10 May 2020 21:29:07 +0800
Message-ID: <87o8qv536k.fsf@localhost> (raw)
In-Reply-To: <87368815qf.fsf@nicolasgoaziou.fr>

>> I tested with master + my personal config + native compilation of org,
>> Emacs native-comp branch, commit c984a53b4e198e31d11d7bc493dc9a686c77edae.
>> Did not see much improvement.
>> Vertical motion in the folded buffer is still quite slow.
>
> Oh! This is embarrassing. I improved speed, then broke it again in
> a later commit. Sorry for wasting your time. I think I fixed it again.
> Thank you for the feedback.
>
> Could you have a look again?

I still do not feel much difference, so I used elp to quantify if there
is any difference I cannot notice by myself. I tested the time to move
from to bottom of the example file with next-logical-line.

org master (7801e9236):
6(#calls)           2.852953989(total time, sec)   0.4754923315(average)
      
org e39365e32:
6           2.991771891   0.4986286485

org feature/drawertextprop:
6           0.149731379   0.0249552298

There is small improvement in speed, but it is not obvious.

> ... In current master,
> it means there is at most 5217 overlays in the buffer. With text
> properties, the worse situation in the same.

Do you mean that number of overlays is same with text properties? I feel
that I misunderstand what you want to say. 

> Of course, that case happens less often with text properties. For
> example, it happens in "contents" view in both cases. However, in "show
> all" view, it is only a problem with overlays.

I am completely lost. What do you mean by "that case"?

Best,
Ihor

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Hello,
>
> Ihor Radchenko <yantar92@gmail.com> writes:
>
>>> Oops, you are right. I fixed this. It should be way faster. I can
>>> navigate in your example file without much trouble.
>>>
>>> Please let me know how it goes.
>>
>> I tested with master + my personal config + native compilation of org,
>> Emacs native-comp branch, commit c984a53b4e198e31d11d7bc493dc9a686c77edae.
>> Did not see much improvement.
>> Vertical motion in the folded buffer is still quite slow.
>
> Oh! This is embarrassing. I improved speed, then broke it again in
> a later commit. Sorry for wasting your time. I think I fixed it again.
> Thank you for the feedback.
>
> Could you have a look again?
>
>> Apparently I misunderstood the purpose of: 1027e0256
>> "Implement `org-cycle-hide-property-drawers'"
>
> The function is meant to re-hide only property drawers after visibility
> cycling. Its purpose is not to improve /unfolding/ speed. Unfolding is
> very fast already, faster than using text properties.
>
> Folding has roughly the same speed in both cases: most time is spent
> looking for the next location to fold. However, folding with text
> properties is more resilient, so you fold less often.
>
> As a side note, your file contains 5217 headlines and 5215 property
> drawers. I'll ignore the 3989 regular drawers for the time being
> (although they do contribute to the slow navigation). In current master,
> it means there is at most 5217 overlays in the buffer. With text
> properties, the worse situation in the same.
>
> Of course, that case happens less often with text properties. For
> example, it happens in "contents" view in both cases. However, in "show
> all" view, it is only a problem with overlays.
>
> Regards,
>
> -- 
> Nicolas Goaziou

-- 
Ihor Radchenko,
PhD,
Center for Advancing Materials Performance from the Nanoscale (CAMP-nano)
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, China
Email: yantar92@gmail.com, ihor_radchenko@alumni.sutd.edu.sg


  reply	other threads:[~2020-05-10 13:33 UTC|newest]

Thread overview: 86+ 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
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 [this message]
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
2021-09-21 13:32                                                             ` Timothy

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