[Libreoffice-bugs] [Bug 131951] New: Quadratic time on reading and converting html files with images

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131951

            Bug ID: 131951
           Summary: Quadratic time on reading and converting html files
                    with images
           Product: LibreOffice
           Version: 6.4.2.2 release
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: klev.paul at gmail.com

Description:
Time of opening and converting html files with embedded base64 images is
quadratic to image size


For my test I'm using command 
```
soffice --headless --norestore --convert-to odt:writerweb8_writer $file_name
```
to convert from html to odt

Time of execution of the command depends on size of the embedded image.
For example if image size is 100kB, then it takes about 0.4 seconds,
for 5MB image it is already 29 sec on my machine, 
html with 16 MB image requires 4 minutes to be converted

Also time to open such html has similar correlation to the images 

See attachments for the statistics and the html files



Steps to Reproduce:
1a. Convert html file with embedded base64 encoded image
using command soffice --headless --norestore --convert-to odt:writerweb8_writer
$file_name

1b. Or try to open such files with LibreOfficeWriter


Actual Results:
Time to open/convert file is quadratic to image file size

Expected Results:
Time to open/convert file should be linear to image file size


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.4.2.2
Build ID: 6.4.2-1
CPU threads: 12; OS: Linux 5.5; UI render: default; VCL: kf5; 
Locale: fr-CH (ru_RU.UTF-8); UI-Language: en-US
Calc: threaded

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/libreoffice-bugs/attachments/20200407/9ec6bc69/attachment-0001.htm>