* Org mode in combination with emacs follow-mode is terrible
@ 2018-06-11 10:54 Gerald Wildgruber
0 siblings, 0 replies; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-11 10:54 UTC (permalink / raw)
To: org mode mailing list
Hi,
I'm using emacs (git checkout v. 27.0.50) and Org mode (git checkout
release_9.1.13-760-g8def68).
My typical setup is to use a maximized or full screen emacs frame split
into five windows positioned vertically one next to the other. All five
windows display one and the same file, that is opened using emacs
follow-mode, so that every window is displaying a portion of the same
file in a continuous manner.
Yet, there seems to be an incompatibility between Org mode and
follow-mode: there is terrible lag with every single key input (on a
very fast quad core machine); every key stroke produces a 100% processor
load. It would seem that this is even worse, when working on portions
towards the end of the file. If I deactivate follow-mode, the problem
disappears.
Anyone got an idea what's going on here and how to debug that?
Thanks
Gerald.
---------------------
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^ permalink raw reply [flat|nested] 12+ messages in thread
* Org mode in combination with emacs follow-mode is terrible
@ 2018-06-11 12:56 Gerald Wildgruber
2018-06-12 6:57 ` Eric S Fraga
0 siblings, 1 reply; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-11 12:56 UTC (permalink / raw)
To: emacs-orgmode
Hi,
I'm using emacs (git checkout v. 27.0.50) and Org mode (git checkout
release_9.1.13-760-g8def68).
My typical setup is to use a maximized or full screen emacs frame split
into five windows positioned vertically one next to the other. All five
windows display one and the same file, that is opened using emacs
follow-mode, so that every window is displaying a portion of the same
file in a continuous manner.
Yet, there seems to be an incompatibility between Org mode and
follow-mode: there is terrible lag with every single key input (on a
very fast quad core machine); every key stroke produces a 100% processor
load. It would seem that this is even worse, when working on portions
towards the end of the file. If I deactivate follow-mode, the problem
disappears.
Anyone got an idea what's going on here and how to debug that?
Thanks
Gerald.
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-11 12:56 Gerald Wildgruber
@ 2018-06-12 6:57 ` Eric S Fraga
2018-06-12 10:23 ` Gerald Wildgruber
0 siblings, 1 reply; 12+ messages in thread
From: Eric S Fraga @ 2018-06-12 6:57 UTC (permalink / raw)
To: Gerald Wildgruber; +Cc: emacs-orgmode
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On Monday, 11 Jun 2018 at 14:56, Gerald Wildgruber wrote:
> My typical setup is to use a maximized or full screen emacs frame split
[...]
> portions towards the end of the file. If I deactivate follow-mode, the
> problem disappears.
I have a 38" monitor and I frequently do what you say. However, I
typically only split the frame into 3 windows. I don't remember seeing
any lag. But I am currently away so cannot verify. What happens if you
try with less windows?
--
Eric S Fraga via Emacs 25.2.2, Org release_9.1.13-791-g842002
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^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-12 10:23 ` Gerald Wildgruber
@ 2018-06-12 10:17 ` Eric S Fraga
2018-06-13 7:46 ` Gerald Wildgruber
2018-06-13 7:53 ` Gerald Wildgruber
0 siblings, 2 replies; 12+ messages in thread
From: Eric S Fraga @ 2018-06-12 10:17 UTC (permalink / raw)
To: Gerald Wildgruber; +Cc: emacs-orgmode
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On Tuesday, 12 Jun 2018 at 12:23, Gerald Wildgruber wrote:
> Hi Eric,
>
> thanks for the input: indeed, I always use at least five windows (on a
> 40" display), as this setup displays simultanously almost 60Kb of text,
> an entire papaer, which is excellent!
That's a lot of text so maybe it's really not surprising maybe that
there is a lag. What happens if you edit the same file in text-mode?
> Elsewise: do you see any reason or issue with both modes enabled that
> could lead to such behavior: it would seem that emacs tries to
> calculate something with every new keystroke, that involves all text
> before point.
Maybe font-lock and org-indent may impact on this?
I also find that the presence of tables often slows org down although
it's difficult to quantify the actual impact.
--
Eric S Fraga via Emacs 25.2.2, Org release_9.1.13-791-g842002
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^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-12 6:57 ` Eric S Fraga
@ 2018-06-12 10:23 ` Gerald Wildgruber
2018-06-12 10:17 ` Eric S Fraga
0 siblings, 1 reply; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-12 10:23 UTC (permalink / raw)
To: Eric S Fraga; +Cc: emacs-orgmode
Hi Eric,
thanks for the input: indeed, I always use at least five windows (on a
40" display), as this setup displays simultanously almost 60Kb of text,
an entire papaer, which is excellent!
I will try the results with fewer windows tomorrow, when back in office.
Elsewise: do you see any reason or issue with both modes enabled that
could lead to such behavior: it would seem that emacs tries to calculate
something with every new keystroke, that involves all text before point.
Gerald.
On Di, Jun 12 2018, Eric S Fraga <esflists@gmail.com> wrote:
> On Monday, 11 Jun 2018 at 14:56, Gerald Wildgruber wrote:
>> My typical setup is to use a maximized or full screen emacs frame split
>
> [...]
>
>> portions towards the end of the file. If I deactivate follow-mode, the
>> problem disappears.
>
> I have a 38" monitor and I frequently do what you say. However, I
> typically only split the frame into 3 windows. I don't remember seeing
> any lag. But I am currently away so cannot verify. What happens if you
> try with less windows?
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-12 10:17 ` Eric S Fraga
@ 2018-06-13 7:46 ` Gerald Wildgruber
2018-06-13 7:53 ` Gerald Wildgruber
1 sibling, 0 replies; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-13 7:46 UTC (permalink / raw)
To: Eric S Fraga; +Cc: emacs-orgmode
Thanks! actually every single one of the following does help a bit:
- reducing number of windows to 3
- switching to text-mode
- dectivating org-indent-mode, with org-mode still being active
There's still lag, but not as extreme as with my original setup.
Still, the most significant change occurs by deactivating follow-mode:
every lag simply disappears.
Gerald.
On Di, Jun 12 2018, Eric S Fraga <esflists@gmail.com> wrote:
> On Tuesday, 12 Jun 2018 at 12:23, Gerald Wildgruber wrote:
>> Hi Eric,
>>
>> thanks for the input: indeed, I always use at least five windows (on a
>> 40" display), as this setup displays simultanously almost 60Kb of text,
>> an entire papaer, which is excellent!
>
> That's a lot of text so maybe it's really not surprising maybe that
> there is a lag. What happens if you edit the same file in text-mode?
>
>> Elsewise: do you see any reason or issue with both modes enabled that
>> could lead to such behavior: it would seem that emacs tries to
>> calculate something with every new keystroke, that involves all text
>> before point.
>
> Maybe font-lock and org-indent may impact on this?
>
> I also find that the presence of tables often slows org down although
> it's difficult to quantify the actual impact.
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-12 10:17 ` Eric S Fraga
2018-06-13 7:46 ` Gerald Wildgruber
@ 2018-06-13 7:53 ` Gerald Wildgruber
2018-06-13 9:51 ` Eric S Fraga
1 sibling, 1 reply; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-13 7:53 UTC (permalink / raw)
To: Eric S Fraga; +Cc: emacs-orgmode
Switching to text-mode, with 5 windows and follow-mode still being
active reduces lag significantly.
So there must be an issue specifically with the combination of org-mode
and follow-mode!
Gerald.
On Di, Jun 12 2018, Eric S Fraga <esflists@gmail.com> wrote:
> On Tuesday, 12 Jun 2018 at 12:23, Gerald Wildgruber wrote:
>> Hi Eric,
>>
>> thanks for the input: indeed, I always use at least five windows (on a
>> 40" display), as this setup displays simultanously almost 60Kb of text,
>> an entire papaer, which is excellent!
>
> That's a lot of text so maybe it's really not surprising maybe that
> there is a lag. What happens if you edit the same file in text-mode?
>
>> Elsewise: do you see any reason or issue with both modes enabled that
>> could lead to such behavior: it would seem that emacs tries to
>> calculate something with every new keystroke, that involves all text
>> before point.
>
> Maybe font-lock and org-indent may impact on this?
>
> I also find that the presence of tables often slows org down although
> it's difficult to quantify the actual impact.
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-13 7:53 ` Gerald Wildgruber
@ 2018-06-13 9:51 ` Eric S Fraga
2018-06-13 10:00 ` Joost Kremers
2018-06-15 15:25 ` Gerald Wildgruber
0 siblings, 2 replies; 12+ messages in thread
From: Eric S Fraga @ 2018-06-13 9:51 UTC (permalink / raw)
To: Gerald Wildgruber; +Cc: emacs-orgmode
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On Wednesday, 13 Jun 2018 at 09:53, Gerald Wildgruber wrote:
> Switching to text-mode, with 5 windows and follow-mode still being
> active reduces lag significantly.
>
> So there must be an issue specifically with the combination of org-mode
> and follow-mode!
I don't think there's an issue per se in the sense of bugs. Org does
much more processing of the text than does text mode so if you have 60k
worth of text to process each time you type something, it's probably not
surprising that there is a lag. 60k is a lot of text and I assume there
are many headings etc.? Part of the attraction of org mode is the
visual representation of the text and this unfortunately comes at a
cost.
I cannot remember what version of Emacs you are using. If not the
latest, it might be worth trying v26.1 or even one of the latest
snapshots in case?
--
Eric S Fraga via Emacs 25.2.2, Org release_9.1.13-791-g842002
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^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-13 9:51 ` Eric S Fraga
@ 2018-06-13 10:00 ` Joost Kremers
2018-06-15 15:34 ` Gerald Wildgruber
2018-06-15 16:28 ` Gerald Wildgruber
2018-06-15 15:25 ` Gerald Wildgruber
1 sibling, 2 replies; 12+ messages in thread
From: Joost Kremers @ 2018-06-13 10:00 UTC (permalink / raw)
To: Eric S Fraga; +Cc: Gerald Wildgruber, emacs-orgmode
On Wed, Jun 13 2018, Eric S Fraga wrote:
> On Wednesday, 13 Jun 2018 at 09:53, Gerald Wildgruber wrote:
>> Switching to text-mode, with 5 windows and follow-mode still
>> being
>> active reduces lag significantly.
>>
>> So there must be an issue specifically with the combination of
>> org-mode
>> and follow-mode!
>
> I don't think there's an issue per se in the sense of bugs. Org
> does
> much more processing of the text than does text mode so if you
> have 60k
> worth of text to process each time you type something, it's
> probably not
> surprising that there is a lag.
Actually, I would suspect it's more of a problem for follow-mode
than org-mode, because follow-mode needs to keep the different
windows in sync. For this, it adds a function to
`post-command-hook', which means it's run after every key press.
It's not inconceivable that `follow-mode' does something that is
extra time-consuming in an Org buffer. To find out what that might
be, you could try the Elisp profiler that comes with Emacs. See
the section "Profiling" in the Elisp manual for details.
Once you've found out which function(s) consume so much time, it
might be possible to ask in here or on emacs-devel what exactly is
causing the problem and whether there's a way around it.
--
Joost Kremers
Life has its moments
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-13 9:51 ` Eric S Fraga
2018-06-13 10:00 ` Joost Kremers
@ 2018-06-15 15:25 ` Gerald Wildgruber
1 sibling, 0 replies; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-15 15:25 UTC (permalink / raw)
To: Eric S Fraga; +Cc: emacs-orgmode
Thanks again; I'm always using the latest git checkout of emacs
(v.27, see my first posting).
On Mi, Jun 13 2018, Eric S Fraga <esflists@gmail.com> wrote:
> I don't think there's an issue per se in the sense of bugs. Org does
> much more processing of the text than does text mode so if you have 60k
> worth of text to process each time you type something, it's probably not
> surprising that there is a lag. 60k is a lot of text and I assume there
> are many headings etc.?
Yes, indeed, there are! Actually does this mean that emacs or org-mode
has to take into consideration every single bit of text in the visible
part buffer of the buffer, whenever I press a key? what needs to be
calculated by simple entering of text?
Gerald
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-13 10:00 ` Joost Kremers
@ 2018-06-15 15:34 ` Gerald Wildgruber
2018-06-15 16:28 ` Gerald Wildgruber
1 sibling, 0 replies; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-15 15:34 UTC (permalink / raw)
To: Joost Kremers; +Cc: Eric S Fraga, emacs-orgmode
Thanks Joost,
that's interesting! I never used the profiler but I will try and see how
far I get with it and then come back here.
Gerald.
On Mi, Jun 13 2018, Joost Kremers <joostkremers@fastmail.fm> wrote:
> On Wed, Jun 13 2018, Eric S Fraga wrote:
>> On Wednesday, 13 Jun 2018 at 09:53, Gerald Wildgruber wrote:
>>> Switching to text-mode, with 5 windows and follow-mode still being
>>> active reduces lag significantly.
>>>
>>> So there must be an issue specifically with the combination of org-mode
>>> and follow-mode!
>>
>> I don't think there's an issue per se in the sense of bugs. Org does
>> much more processing of the text than does text mode so if you have 60k
>> worth of text to process each time you type something, it's probably not
>> surprising that there is a lag.
>
> Actually, I would suspect it's more of a problem for follow-mode than
> org-mode, because follow-mode needs to keep the different windows in sync.
> For this, it adds a function to `post-command-hook', which means it's run
> after every key press.
>
> It's not inconceivable that `follow-mode' does something that is extra
> time-consuming in an Org buffer. To find out what that might be, you could
> try the Elisp profiler that comes with Emacs. See the section "Profiling"
> in the Elisp manual for details.
>
> Once you've found out which function(s) consume so much time, it might be
> possible to ask in here or on emacs-devel what exactly is causing the
> problem and whether there's a way around it.
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Org mode in combination with emacs follow-mode is terrible
2018-06-13 10:00 ` Joost Kremers
2018-06-15 15:34 ` Gerald Wildgruber
@ 2018-06-15 16:28 ` Gerald Wildgruber
1 sibling, 0 replies; 12+ messages in thread
From: Gerald Wildgruber @ 2018-06-15 16:28 UTC (permalink / raw)
To: Joost Kremers; +Cc: Eric S Fraga, emacs-orgmode
I tried profiling my use of org-mode in conjunction with follow-mode; I
did the following:
1. M-x profiler-start
2. I enabled follow-mode in my buffer
3. I did some editing
4. M-x profiler-report
5. M-x profiler-stop
here's the result:
Collapsed, the report looks like that:
+ command-execute 8789 47%
+ follow-post-command-hook 7755 41%
+ ... 1976 10%
+ redisplay_internal (C function) 104 0%
+ yas--post-command-handler 40 0%
+ timer-event-handler 20 0%
tooltip-hide 7 0%
And somewhat expanded:
- command-execute 8789 47%
- call-interactively 8789 47%
- byte-code 8174 43%
- read-extended-command 8174 43%
- completing-read 8174 43%
- #<compiled 0x3d2ceb9> 8174 43%
- apply 8174 43%
- helm--completing-read-default 8174 43%
- helm-completing-read-sync-default-handler 8174 43%
- helm-completing-read-default-1 8174 43%
- helm-comp-read 8174 43%
- helm 8165 43%
- apply 8165 43%
- helm 8165 43%
- apply 8165 43%
- helm-internal 8165 43%
- helm-read-pattern-maybe 8150 43%
+ read-from-minibuffer 8079 43%
+ helm-update 43 0%
- #<compiled 0x12071ed> 9 0%
+ helm-cleanup 9 0%
+ helm-display-buffer 6 0%
+ helm-make-source 9 0%
+ funcall-interactively 615 3%
- follow-post-command-hook 7755 41%
- follow-adjust-window 7755 41%
- follow-windows-start-end 7732 41%
- follow-calc-win-end 7732 41%
+ pos-visible-in-window-p 25 0%
+ posn-at-x-y 7 0%
+ window-inside-pixel-edges 3 0%
+ follow-all-followers 4 0%
follow-avoid-tail-recenter 3 0%
If I understand correctly "follow-calc-win-end" would be the function
that uses most of cpu time.
I can't say how "normal" the other 47% under "command-execute" are,
which mainly seems to be helm-related ("helm-update").
Can anyone give an advice on possible optimizations with this situation?
Gerald.
On Mi, Jun 13 2018, Joost Kremers <joostkremers@fastmail.fm> wrote:
> Actually, I would suspect it's more of a problem for follow-mode than
> org-mode, because follow-mode needs to keep the different windows in sync.
> For this, it adds a function to `post-command-hook', which means it's run
> after every key press.
>
> It's not inconceivable that `follow-mode' does something that is extra
> time-consuming in an Org buffer. To find out what that might be, you could
> try the Elisp profiler that comes with Emacs. See the section "Profiling"
> in the Elisp manual for details.
>
> Once you've found out which function(s) consume so much time, it might be
> possible to ask in here or on emacs-devel what exactly is causing the
> problem and whether there's a way around it.
--
Dr. Gerald Wildgruber
Institut für Philosophie, Literatur-, Wissenschafts- und Technikgeschichte
Literaturwissenschaft mit Schwerpunkt Literatur und Wissenschaft
Technische Universität Berlin
Straße des 17. Juni 135
D-10623 Berlin
http://www.philosophie.tu-berlin.de/menue/home/
T. +49 (0)30 314 25924
F. +49 (0)30 314 23107
wildgruber@tu-berlin.de
---------------------
Sent with mu4e
^ permalink raw reply [flat|nested] 12+ messages in thread
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2018-06-11 10:54 Org mode in combination with emacs follow-mode is terrible Gerald Wildgruber
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2018-06-11 12:56 Gerald Wildgruber
2018-06-12 6:57 ` Eric S Fraga
2018-06-12 10:23 ` Gerald Wildgruber
2018-06-12 10:17 ` Eric S Fraga
2018-06-13 7:46 ` Gerald Wildgruber
2018-06-13 7:53 ` Gerald Wildgruber
2018-06-13 9:51 ` Eric S Fraga
2018-06-13 10:00 ` Joost Kremers
2018-06-15 15:34 ` Gerald Wildgruber
2018-06-15 16:28 ` Gerald Wildgruber
2018-06-15 15:25 ` Gerald Wildgruber
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