Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 22/03/2019 à 21:06, David Belius a écrit :

Fantastic, thank you very much!

Is the fix in a git repository somewhere so I can try it out?


It is at git://git.lyx.org/lyx, in branch 2.3.x. Building on windows is 
not very well documented, but we would definitely need testers.


JMarc

Re: Lyx sluggish on Windows 10

[David Belius]

Fantastic, thank you very much!

Is the fix in a git repository somewhere so I can try it out?

Regards,
David

Den tors 21 mars 2019 kl 21:51 skrev Jean-Marc Lasgouttes <
lasgout...@lyx.org>:

> Le 21/03/2019 à 21:32, Dr Paul Verschueren a écrit :
> > Well done Jean-Marc - and many thanks!
>
> I am interested in other documents that exhibit performance issues.
> I know that more remains to be done.
>
> JMarc
>

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 21/03/2019 à 21:32, Dr Paul Verschueren a écrit :

Well done Jean-Marc - and many thanks!


I am interested in other documents that exhibit performance issues.
I know that more remains to be done.

JMarc

RE: Lyx sluggish on Windows 10

[Dr Paul Verschueren]

Well done Jean-Marc - and many thanks!
P

-Original Message-
From: Jean-Marc Lasgouttes [mailto:lasgout...@lyx.org] 
Sent: 21 March 2019 17:49
To: Dr Paul Verschueren ; David Belius 
; LyX Users 
Subject: Re: Lyx sluggish on Windows 10

Le 15/03/2019 à 17:02, Dr Paul Verschueren a écrit :
> Yes I get the same problem with David's test file (i7 laptop, LyX Version 
> 2.3.2-1, up to date Win10).
> I had noticed some sluggishness previously when the number of equations 
> builds up, but not enough to make it worth raising as an issue.
> However this test file is solid equations, and shows up the problem nicely - 
> well done David!
> P

This problem should be solved in LyX 2.3.3. There are still performance 
problems to look at[*], but this should fix the regression.

JMarc

[*] basically, I made a function faster, but it should also be called it less 
often. The two sides of optimization...

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 15/03/2019 à 17:02, Dr Paul Verschueren a écrit :

Yes I get the same problem with David's test file (i7 laptop, LyX Version 
2.3.2-1, up to date Win10).
I had noticed some sluggishness previously when the number of equations builds 
up, but not enough to make it worth raising as an issue.
However this test file is solid equations, and shows up the problem nicely - 
well done David!
P


This problem should be solved in LyX 2.3.3. There are still performance 
problems to look at[*], but this should fix the regression.


JMarc

[*] basically, I made a function faster, but it should also be called it 
less often. The two sides of optimization...

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 15/03/2019 à 22:18, Jürgen Womser-Schütz a écrit :


Am 15.03.2019 um 20:32 schrieb Jean-Marc Lasgouttes:

Le 15/03/2019 à 20:04, Paul A. Rubin a écrit :

I have a copy of LyX 2.3.1 running under Win 10 in a VirtualBox
environment. That's a bit sluggish all the way around, but I noticed
no difference in the (slight) lag between the first and second
pastings of '123'.


I see sluggishness here on windows 10, but I cannot find a way to tell
the  Visual Studio to profile this thing. I hate these tools.

No need to hate. You have to pay for these tools. As I know there is a
nice profiler for VisualStudio from "JetBrains". But it is expensive :-)


But the free Visual Studio has a "Profile" command. I just cannot get it 
to work.


In the meantime, I am doing profiling by hand, with my dumn 
support/pmprof.h class.


JMarc

Re: Lyx sluggish on Windows 10

[Jürgen Womser-Schütz]

Am 15.03.2019 um 22:18 schrieb Jürgen Womser-Schütz:
> Am 15.03.2019 um 20:32 schrieb Jean-Marc Lasgouttes:
>> Le 15/03/2019 à 20:04, Paul A. Rubin a écrit :
>>> I have a copy of LyX 2.3.1 running under Win 10 in a VirtualBox
>>> environment. That's a bit sluggish all the way around, but I noticed
>>> no difference in the (slight) lag between the first and second
>>> pastings of '123'.
>> I see sluggishness here on windows 10, but I cannot find a way to tell
>> the  Visual Studio to profile this thing. I hate these tools.
> No need to hate. You have to pay for these tools. As I know there is a
> nice profiler for VisualStudio from "JetBrains". But it is expensive :-)
... and only for C# (Sorry)
>> JMarc
>>
Jürgen

Re: Lyx sluggish on Windows 10

[Jürgen Womser-Schütz]

Am 15.03.2019 um 20:32 schrieb Jean-Marc Lasgouttes:
> Le 15/03/2019 à 20:04, Paul A. Rubin a écrit :
>> I have a copy of LyX 2.3.1 running under Win 10 in a VirtualBox
>> environment. That's a bit sluggish all the way around, but I noticed
>> no difference in the (slight) lag between the first and second
>> pastings of '123'.
>
> I see sluggishness here on windows 10, but I cannot find a way to tell
> the  Visual Studio to profile this thing. I hate these tools.
No need to hate. You have to pay for these tools. As I know there is a
nice profiler for VisualStudio from "JetBrains". But it is expensive :-)
>
> JMarc
>

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 15/03/2019 à 20:04, Paul A. Rubin a écrit :
I have a copy of LyX 2.3.1 running under Win 10 in a VirtualBox 
environment. That's a bit sluggish all the way around, but I noticed no 
difference in the (slight) lag between the first and second pastings of 
'123'.


I see sluggishness here on windows 10, but I cannot find a way to tell 
the  Visual Studio to profile this thing. I hate these tools.


JMarc

Re: Lyx sluggish on Windows 10

[Paul A. Rubin]

On 3/15/19 11:01 AM, Jean-Marc Lasgouttes wrote:

[David, please be careful to keep the messages on the list]

Le 15/03/2019 à 15:41, David Belius a écrit :

My screen fonts are:
Roman: Times New Roman
Sans Serif: Arial
Typewriter: Courier New

I guess these are standard fonts?


Yes, pretty standard.

I tried download the latin modern fonts and using them instead of 
Times New Roman. It did not make any difference, unfortunately.


No, it should not. I doubt they are really usable as screen fonts, 
actually (but I may be wrong).



Here is a video of the problem:
https://www.dropbox.com/s/jo94j8o9tcz9pfb/win_10_font_problem.mp4?dl=0
I paste "123" into a display twice in quick succession; in the video 
you can see the much longer delay between the appearance of the first 
and the second "123". With less text in displays in the document the 
delay is smaller.


I this one huge paragraph with only one word and without space? This 
is not s



And here is a file which has this problem:
https://www.dropbox.com/s/y0zgbfyp0ovezqu/win_10_font_problem.lyx?dl=0

Is there anyone on this mailing list who has windows 10 and would be 
willing to test the file to see if the problem is reproduced on a 
different machine?


Thank you for the document, I will try it out when I find the time (my 
main machine is linux).

Please keep it on your dropbox for now.

Does it make a difference if the rest of the document is text instead 
of math?


JMarc

No sluggishness here (Linux Mint, LyX 2.3.2). No noticeable hit in terms 
of CPU use either.


I have a copy of LyX 2.3.1 running under Win 10 in a VirtualBox 
environment. That's a bit sluggish all the way around, but I noticed no 
difference in the (slight) lag between the first and second pastings of 
'123'.


Paul

RE: Lyx sluggish on Windows 10

[Dr Paul Verschueren]

Yes I get the same problem with David's test file (i7 laptop, LyX Version 
2.3.2-1, up to date Win10).
I had noticed some sluggishness previously when the number of equations builds 
up, but not enough to make it worth raising as an issue.
However this test file is solid equations, and shows up the problem nicely - 
well done David!
P

-Original Message-
From: lyx-users@lists.lyx.org [mailto:lyx-users@lists.lyx.org] On Behalf Of 
Jean-Marc Lasgouttes
Sent: 15 March 2019 15:02
To: David Belius ; LyX Users 
Subject: Re: Lyx sluggish on Windows 10

[David, please be careful to keep the messages on the list]

Le 15/03/2019 à 15:41, David Belius a écrit :
> My screen fonts are:
> Roman: Times New Roman
> Sans Serif: Arial
> Typewriter: Courier New
> 
> I guess these are standard fonts?

Yes, pretty standard.

> I tried download the latin modern fonts and using them instead of 
> Times New Roman. It did not make any difference, unfortunately.

No, it should not. I doubt they are really usable as screen fonts, actually 
(but I may be wrong).

> Here is a video of the problem:
> https://www.dropbox.com/s/jo94j8o9tcz9pfb/win_10_font_problem.mp4?dl=0
> I paste "123" into a display twice in quick succession; in the video 
> you can see the much longer delay between the appearance of the first 
> and the second "123". With less text in displays in the document the 
> delay is smaller.

I this one huge paragraph with only one word and without space? This is not s

> And here is a file which has this problem:
> https://www.dropbox.com/s/y0zgbfyp0ovezqu/win_10_font_problem.lyx?dl=0
> 
> Is there anyone on this mailing list who has windows 10 and would be 
> willing to test the file to see if the problem is reproduced on a 
> different machine?

Thank you for the document, I will try it out when I find the time (my main 
machine is linux).
Please keep it on your dropbox for now.

Does it make a difference if the rest of the document is text instead of math?

JMarc

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

[David, please be careful to keep the messages on the list]

Le 15/03/2019 à 15:41, David Belius a écrit :

My screen fonts are:
Roman: Times New Roman
Sans Serif: Arial
Typewriter: Courier New

I guess these are standard fonts?


Yes, pretty standard.

I tried download the latin modern fonts and using them instead of Times 
New Roman. It did not make any difference, unfortunately.


No, it should not. I doubt they are really usable as screen fonts, 
actually (but I may be wrong).



Here is a video of the problem:
https://www.dropbox.com/s/jo94j8o9tcz9pfb/win_10_font_problem.mp4?dl=0
I paste "123" into a display twice in quick succession; in the video you 
can see the much longer delay between the appearance of the first and 
the second "123". With less text in displays in the document the delay 
is smaller.


I this one huge paragraph with only one word and without space? This is 
not s



And here is a file which has this problem:
https://www.dropbox.com/s/y0zgbfyp0ovezqu/win_10_font_problem.lyx?dl=0

Is there anyone on this mailing list who has windows 10 and would be 
willing to test the file to see if the problem is reproduced on a 
different machine?


Thank you for the document, I will try it out when I find the time (my 
main machine is linux).

Please keep it on your dropbox for now.

Does it make a difference if the rest of the document is text instead of 
math?


JMarc

Re: Lyx sluggish on Windows 10

[Jean-Marc Lasgouttes]

Le 10/03/2019 à 19:00, Paul A. Rubin a écrit :

When I type into an equation CPU usage hits about 50%, split

evenly between Lyx and a process called "Usermode Font Driver
Host". I googled the latter and found some references to it in
connection with possibly similar problems

(https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/).
I tried the "clean boot" mentioned in that discussion but it
didn't change anything.
Other than that, the only thing I could think of would be some sort of 
issue with the screen font. You mentioned issues when typing math and 
scrolling through documents. If the scrolling issues occur only in 
documents containing math (or other "interesting" glyphs), and not in 
plain text documents, you might try changing your screen fonts to 
something "Windows-standard" (if they are not already so) and see if 
that mitigates the issue.


Indeed, the affinity forum suggest that the problem was a font after 
all. It would make sense to change the default screen font to something 
standard if it is not the case already.


If we were able to reproduce, we could try to do something about it, but 
currently I am a bit dry.


JMarc

Re: Lyx sluggish on Windows 10

[Baris Erkus]

On 10-Mar-19 9:00 PM, Paul A. Rubin wrote:
> This being Windows, I suppose we should also not rule out an exorcism. :-)
>
> Paul
>
+1 and some sorcery

-- 
↓↓
Please bottom-post. Start your reply here:

Re: Lyx sluggish on Windows 10

[Paul A. Rubin]

On 3/10/19 12:18 PM, David Belius wrote:

No, it's turned off.

Den sön 10 mars 2019 kl 15:55 skrev Paul A. Rubin >:


On 3/10/19 8:31 AM, David Belius wrote:



Den sön 10 mars 2019 kl 01:11 skrev Paul A. Rubin
mailto:parubi...@gmail.com>>:

On 3/9/19 2:59 AM, David Belius wrote:

Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak
mailto:skost...@lyx.org>>:

On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius
wrote:
> Hi,
>
> Recently Lyx has been sluggish when typing equations
and scrolling in
> moderately sized documents, to the point that it
becomes very frustrating.
> Is this known to be an issue with current versions? I
am using a fresh
> install of Lyx 2.3.2-2 on an up-to-date version of
Windows 10 (Version
> 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS
on a much older
> computer editing same document is very snappy.

I'm not sure I have seen such a report. It is hard to
know how to
diagnose the problem. When you see the sluggishness, are
you by chance
working on a file that is in a Dropbox folder and you
have automatic
save set to a high frequency? That's just a random
guess. We have seen
some problems from users with both Windows and Dropbox.


Indeed the file is in a dropbox folder. But
"Look>Document Handling->Backup documents every X
minutes" is set to 5, which doesn't seem bery high
frequency, and the problem persists even if I edit a copy of
the document I placed in a non-dropbox folder.

If you open the Windows Task Manager and then start editing a
document in LyX, does the Task Manager show either high CPU
utilization or high disk utilization for anything?

When I type into an equation CPU usage hits about 50%, split
evenly between Lyx and a process called "Usermode Font Driver
Host". I googled the latter and found some references to it in
connection with possibly similar problems

(https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/).
I tried the "clean boot" mentioned in that discussion but it
didn't change anything.

Incidently on Ubuntu the CPU usage for lyx in "top" hits ca 30%
when I type into an equation in the same document at the same
speed, but there is no additional process that sees increased CPU
usage and lyx remains responsive while typing, unlike on windows.

You don't by any chance have instant preview turned on, do you?

Paul


(Please bottom post so that others can follow the discussion more easily.)

There's a list of things to try at 
https://www.thewindowsclub.com/windows-driver-foundationframework-using-high-cpu-memory. 
Other than that, the only thing I could think of would be some sort of 
issue with the screen font. You mentioned issues when typing math and 
scrolling through documents. If the scrolling issues occur only in 
documents containing math (or other "interesting" glyphs), and not in 
plain text documents, you might try changing your screen fonts to 
something "Windows-standard" (if they are not already so) and see if 
that mitigates the issue.


This being Windows, I suppose we should also not rule out an exorcism. :-)

Paul

Re: Lyx sluggish on Windows 10

[David Belius]

No, it's turned off.

Den sön 10 mars 2019 kl 15:55 skrev Paul A. Rubin :

> On 3/10/19 8:31 AM, David Belius wrote:
>
>
>
> Den sön 10 mars 2019 kl 01:11 skrev Paul A. Rubin :
>
>> On 3/9/19 2:59 AM, David Belius wrote:
>>
>> Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak :
>>
>>> On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
>>> > Hi,
>>> >
>>> > Recently Lyx has been sluggish when typing equations and scrolling in
>>> > moderately sized documents, to the point that it becomes very
>>> frustrating.
>>> > Is this known to be an issue with current versions? I am using a fresh
>>> > install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version
>>> > 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older
>>> > computer editing same document is very snappy.
>>>
>>> I'm not sure I have seen such a report. It is hard to know how to
>>> diagnose the problem. When you see the sluggishness, are you by chance
>>> working on a file that is in a Dropbox folder and you have automatic
>>> save set to a high frequency? That's just a random guess. We have seen
>>> some problems from users with both Windows and Dropbox.
>>>
>>
>>
>> Indeed the file is in a dropbox folder. But "Look>Document
>> Handling->Backup documents every X minutes" is set to 5, which doesn't seem
>> bery high frequency, and the problem persists even if I edit a copy of the
>> document I placed in a non-dropbox folder.
>>
>> If you open the Windows Task Manager and then start editing a document in
>> LyX, does the Task Manager show either high CPU utilization or high disk
>> utilization for anything?
>>
>
> When I type into an equation CPU usage hits about 50%, split evenly
> between Lyx and a process called "Usermode Font Driver Host". I googled the
> latter and found some references to it in connection with possibly similar
> problems (
> https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/).
> I tried the "clean boot" mentioned in that discussion but it didn't change
> anything.
>
> Incidently on Ubuntu the CPU usage for lyx in "top" hits ca 30% when I
> type into an equation in the same document at the same speed, but there is
> no additional process that sees increased CPU usage and lyx remains
> responsive while typing, unlike on windows.
>
> You don't by any chance have instant preview turned on, do you?
>
> Paul
>
>

Re: Lyx sluggish on Windows 10

[Paul A. Rubin]

On 3/10/19 8:31 AM, David Belius wrote:



Den sön 10 mars 2019 kl 01:11 skrev Paul A. Rubin >:


On 3/9/19 2:59 AM, David Belius wrote:

Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak
mailto:skost...@lyx.org>>:

On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
> Hi,
>
> Recently Lyx has been sluggish when typing equations and
scrolling in
> moderately sized documents, to the point that it becomes
very frustrating.
> Is this known to be an issue with current versions? I am
using a fresh
> install of Lyx 2.3.2-2 on an up-to-date version of Windows
10 (Version
> 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a
much older
> computer editing same document is very snappy.

I'm not sure I have seen such a report. It is hard to know how to
diagnose the problem. When you see the sluggishness, are you
by chance
working on a file that is in a Dropbox folder and you have
automatic
save set to a high frequency? That's just a random guess. We
have seen
some problems from users with both Windows and Dropbox.


Indeed the file is in a dropbox folder. But "Look>Document
Handling->Backup documents every X minutes" is set to 5, which
doesn't seem bery high frequency, and the problem persists even
if I edit a copy of the document I placed in a non-dropbox folder.

If you open the Windows Task Manager and then start editing a
document in LyX, does the Task Manager show either high CPU
utilization or high disk utilization for anything?

When I type into an equation CPU usage hits about 50%, split evenly 
between Lyx and a process called "Usermode Font Driver Host". I 
googled the latter and found some references to it in connection with 
possibly similar problems 
(https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/). 
I tried the "clean boot" mentioned in that discussion but it didn't 
change anything.


Incidently on Ubuntu the CPU usage for lyx in "top" hits ca 30% when I 
type into an equation in the same document at the same speed, but 
there is no additional process that sees increased CPU usage and lyx 
remains responsive while typing, unlike on windows.

You don't by any chance have instant preview turned on, do you?

Paul

Re: Lyx sluggish on Windows 10

[David Belius]

Den sön 10 mars 2019 kl 01:11 skrev Paul A. Rubin :

> On 3/9/19 2:59 AM, David Belius wrote:
>
> Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak :
>
>> On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
>> > Hi,
>> >
>> > Recently Lyx has been sluggish when typing equations and scrolling in
>> > moderately sized documents, to the point that it becomes very
>> frustrating.
>> > Is this known to be an issue with current versions? I am using a fresh
>> > install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version
>> > 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older
>> > computer editing same document is very snappy.
>>
>> I'm not sure I have seen such a report. It is hard to know how to
>> diagnose the problem. When you see the sluggishness, are you by chance
>> working on a file that is in a Dropbox folder and you have automatic
>> save set to a high frequency? That's just a random guess. We have seen
>> some problems from users with both Windows and Dropbox.
>>
>
>
> Indeed the file is in a dropbox folder. But "Look>Document
> Handling->Backup documents every X minutes" is set to 5, which doesn't seem
> bery high frequency, and the problem persists even if I edit a copy of the
> document I placed in a non-dropbox folder.
>
> If you open the Windows Task Manager and then start editing a document in
> LyX, does the Task Manager show either high CPU utilization or high disk
> utilization for anything?
>

When I type into an equation CPU usage hits about 50%, split evenly between
Lyx and a process called "Usermode Font Driver Host". I googled the latter
and found some references to it in connection with possibly similar
problems (
https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/).
I tried the "clean boot" mentioned in that discussion but it didn't change
anything.

Incidently on Ubuntu the CPU usage for lyx in "top" hits ca 30% when I type
into an equation in the same document at the same speed, but there is no
additional process that sees increased CPU usage and lyx remains responsive
while typing, unlike on windows.

Re: Lyx sluggish on Windows 10

[David Belius]

Code preview is not open.

Best Regards,
David

Den lör 9 mars 2019 kl 22:52 skrev Daniel :

> On 2019-03-08 20:47, David Belius wrote:
> > Hi,
> >
> > Recently Lyx has been sluggish when typing equations and scrolling in
> > moderately sized documents, to the point that it becomes very
> > frustrating. Is this known to be an issue with current versions? I am
> > using a fresh install of Lyx 2.3.2-2 on an up-to-date version of Windows
> > 10 (Version 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a
> > much older computer editing same document is very snappy.
> >
> > Best Regards,
> > David
>
> Do you happen to have the code preview open?
>
> Daniel
>
>

Re: Lyx sluggish on Windows 10

[Paul A. Rubin]

On 3/9/19 2:59 AM, David Belius wrote:
Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak >:


On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
> Hi,
>
> Recently Lyx has been sluggish when typing equations and
scrolling in
> moderately sized documents, to the point that it becomes very
frustrating.
> Is this known to be an issue with current versions? I am using a
fresh
> install of Lyx 2.3.2-2 on an up-to-date version of Windows 10
(Version
> 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much
older
> computer editing same document is very snappy.

I'm not sure I have seen such a report. It is hard to know how to
diagnose the problem. When you see the sluggishness, are you by chance
working on a file that is in a Dropbox folder and you have automatic
save set to a high frequency? That's just a random guess. We have seen
some problems from users with both Windows and Dropbox.


Indeed the file is in a dropbox folder. But "Look>Document 
Handling->Backup documents every X minutes" is set to 5, which doesn't 
seem bery high frequency, and the problem persists even if I edit a 
copy of the document I placed in a non-dropbox folder.
If you open the Windows Task Manager and then start editing a document 
in LyX, does the Task Manager show either high CPU utilization or high 
disk utilization for anything?


Paul

Re: Lyx sluggish on Windows 10

[Daniel]

On 2019-03-08 20:47, David Belius wrote:

Hi,

Recently Lyx has been sluggish when typing equations and scrolling in 
moderately sized documents, to the point that it becomes very 
frustrating. Is this known to be an issue with current versions? I am 
using a fresh install of Lyx 2.3.2-2 on an up-to-date version of Windows 
10 (Version 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a 
much older computer editing same document is very snappy.


Best Regards,
David


Do you happen to have the code preview open?

Daniel

Re: Lyx sluggish on Windows 10

[David Belius]

Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak :

> On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
> > Hi,
> >
> > Recently Lyx has been sluggish when typing equations and scrolling in
> > moderately sized documents, to the point that it becomes very
> frustrating.
> > Is this known to be an issue with current versions? I am using a fresh
> > install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version
> > 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older
> > computer editing same document is very snappy.
>
> I'm not sure I have seen such a report. It is hard to know how to
> diagnose the problem. When you see the sluggishness, are you by chance
> working on a file that is in a Dropbox folder and you have automatic
> save set to a high frequency? That's just a random guess. We have seen
> some problems from users with both Windows and Dropbox.
>


Indeed the file is in a dropbox folder. But "Look>Document
Handling->Backup documents every X minutes" is set to 5, which doesn't seem
bery high frequency, and the problem persists even if I edit a copy of the
document I placed in a non-dropbox folder.

Re: Lyx sluggish on Windows 10

[Scott Kostyshak]

On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote:
> Hi,
> 
> Recently Lyx has been sluggish when typing equations and scrolling in
> moderately sized documents, to the point that it becomes very frustrating.
> Is this known to be an issue with current versions? I am using a fresh
> install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version
> 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older
> computer editing same document is very snappy.

I'm not sure I have seen such a report. It is hard to know how to
diagnose the problem. When you see the sluggishness, are you by chance
working on a file that is in a Dropbox folder and you have automatic
save set to a high frequency? That's just a random guess. We have seen
some problems from users with both Windows and Dropbox.

Scott


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Lyx sluggish on Windows 10

[David Belius]

Hi,

Recently Lyx has been sluggish when typing equations and scrolling in
moderately sized documents, to the point that it becomes very frustrating.
Is this known to be an issue with current versions? I am using a fresh
install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version
1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older
computer editing same document is very snappy.

Best Regards,
David