[Libreoffice-bugs] [Bug 124801] New: LibreOffice Writercannot deal with huge files with some long paragraph

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=124801

            Bug ID: 124801
           Summary: LibreOffice Writercannot deal with huge files with
                    some long paragraph
           Product: LibreOffice
           Version: 6.1.5.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: anzhe990206 at outlook.com

Description:
Recently, I encountered the laggy and slowing down issue(You cannot goto
somewhere smoothly or even edit or add some content smoothly) when using
LibreOffice Writer to deal with a copied contents of an ebook.

And after I did some google search on this issue, many people experienced the
same thing. And not a mature solution to solve this.

After doing some tests, I found that this issue may be caused by some long
paragraphs.
If a document has one or more long paragraphs, LibreOffice Writer may not be
able to handle it smoothly. (I make some long paragraphs(15000 characters per
paragraph) and make an only 22-pages document, this issue which I have depicted
occurred.)
And if I shortened the paragraph length, this issue disappeared even if I have
a 200-pages long document.

In conclusion, I think your code probably needs to be changed to deal with long
paragraphs. I believe this is why the laggy issue occurred.

Please solve this issue quickly, since some people may use some long paragraphs
for a specific purpose, and I really appreciate your works and want to make it
better!

I tested LibreOffice 6.1.
I think this issue is common in LibreOffice product.

Steps to Reproduce:
1. Make a long paragraph such as 15000-characters long.
2. Copy it, and repeat the same paragraph to make your document 20+ pages long.
3. You will not be able to go somewhere quickly and smoothly and even edit or
add some contents to your document.

Actual Results:
You will not be able to go somewhere quickly and smoothly and even edit or add
some contents to your document.

If your paragraph is longer, the issue will be more obvious.

Expected Results:
Make the paragraph shorter and the issue disappeared even your document is 200+
pages long.


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.1.5.2
Build ID: 90f8dcf33c87b3705e78202e3df5142b201bd805
CPU threads: 2; OS: Linux 4.15; UI render: default; VCL: gtk2; 
Locale: zh-CN (zh_CN.UTF-8); Calc: group threaded

P.S
I think this issue is common in LibreOffice product.

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