[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #9 from QA Administrators  ---
Dear Telesto,

To make sure we're focusing on the bugs that affect our users today,
LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed
bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this
bug report. During that time, it's possible that the bug has been fixed, or the
details of the problem have changed. We'd really appreciate your help in
getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice
from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information
from Help - About LibreOffice.

If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave a comment that includes the information from Help
- About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular
meaning that is not 
appropriate in this case)


If you want to do more to help you can test to see if your issue is a
REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your
bug pertains to a feature added after 3.3) from
https://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword


Feel free to come ask questions or to say hello in our QA chat:
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Warm Regards,
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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #8 from QA Administrators  ---
Dear Telesto,

To make sure we're focusing on the bugs that affect our users today,
LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed
bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this
bug report. During that time, it's possible that the bug has been fixed, or the
details of the problem have changed. We'd really appreciate your help in
getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice
from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information
from Help - About LibreOffice.

If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave a comment that includes the information from Help
- About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular
meaning that is not 
appropriate in this case)


If you want to do more to help you can test to see if your issue is a
REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your
bug pertains to a feature added after 3.3) from
https://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword


Feel free to come ask questions or to say hello in our QA chat:
https://kiwiirc.com/nextclient/irc.freenode.net/#libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #7 from QA Administrators  ---
** Please read this message in its entirety before responding **

To make sure we're focusing on the bugs that affect our users today,
LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed
bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this
bug report. During that time, it's possible that the bug has been fixed, or the
details of the problem have changed. We'd really appreciate your help in
getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice
from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information
from Help - About LibreOffice.

If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave a comment that includes the information from Help
- About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular
meaning that is not 
appropriate in this case)


If you want to do more to help you can test to see if your issue is a
REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your
bug pertains to a feature added after 3.3) from
http://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword


Feel free to come ask questions or to say hello in our QA chat:
https://kiwiirc.com/nextclient/irc.freenode.net/#libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #6 from Telesto  ---
@Thomas
* For the initial scrolling lag, probably. 
* For the lag after all images are loaded. The lag started after enabling tiled
rendering. (https://www.ahunt.org/2014/05/tiled-rendering-with-libreofficekit/.
it's introduced in 4.3. But it's probably related to the 4.2 changes..

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

Thomas Lendo  changed:

   What|Removed |Added

 CC||thomas.le...@gmail.com
 Blocks||108075, 103152

--- Comment #5 from Thomas Lendo  ---
There are some image-slow-scrolling issues reported, e.g.
https://bugs.documentfoundation.org/buglist.cgi?component=Writer=short_desc_id=754104=notsubstring=LibreOffice_format=advanced=---=FIXED=INVALID=WONTFIX=DUPLICATE=WORKSFORME=MOVED=NOTABUG=NOTOURBUG=INSUFFICIENTDATA_desc=slow%20image_desc_type=allwordssubstr=svg

Is one of them related to this bug?

Seems that in the 4.x release cycles some changes were made that slow down
image rendering.


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=103152
[Bug 103152] [META] Writer image bugs and enhancements
https://bugs.documentfoundation.org/show_bug.cgi?id=108075
[Bug 108075] [META] Scrolling and Page up/down issues
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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #4 from Telesto  ---
(In reply to Thomas Woltjer from comment #3)
> I can confirm this bug, it happens for me too. It looks like it could be an
> issue with rendering the images, because it only lags when scrolling to
> parts of the document that haven't yet been viewed. 
> 
Hmm.. I wasn't to specific; sorry. This wasn't exactly about the initial lag (I
0accepted it as a fact), but the lag even after all image are viewed..

Most noticeable when moving the vertical scroll-bar from top to bottom at once
or when fast scrolling (after all images are viewed at the first place)

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

Thomas Woltjer  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1

--- Comment #3 from Thomas Woltjer  ---
I can confirm this bug, it happens for me too. It looks like it could be an
issue with rendering the images, because it only lags when scrolling to parts
of the document that haven't yet been viewed. 

While scrolling, it seems that libreoffice is using up approx. 50% of the
processing power on a core, more than the usual amount. It isn't hitting max.
frequency at all, so I don't think putting too much work into one thread is the
issue.

System info:

Version: 5.4.1.2 (x64)
Build ID: ea7cb86e6eeb2bf3a5af73a8fac570321527
CPU threads: 8; OS: Windows 6.19; UI render: GL; 
Locale: en-US (en_US); Calc: group

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #2 from Telesto  ---
Created attachment 137985
  --> https://bugs.documentfoundation.org/attachment.cgi?id=137985=edit
Bibisect log

Bisected to:
commit 4e9d8ca44a246653894559f10bf88effba366b10
Author: Matúš Kukan 
AuthorDate: Tue Jul 15 21:54:58 2014 +0200
Commit: Matúš Kukan 
CommitDate: Tue Jul 15 21:59:17 2014 +0200

libreofficekit does not work with libmerged

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[Libreoffice-bugs] [Bug 114048] Scrolling multi-page (pages on a row) with a lot of images is slow

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114048

--- Comment #1 from Telesto  ---
Created attachment 137984
  --> https://bugs.documentfoundation.org/attachment.cgi?id=137984=edit
Example file

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