[Libreoffice-bugs] [Bug 122713] New: High CPU usage when viewing spreadsheet

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=122713

            Bug ID: 122713
           Summary: High CPU usage when viewing spreadsheet
           Product: LibreOffice
           Version: 6.3.0.0.alpha0+ Master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: bibisected, bisected, regression
          Severity: major
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: todventtu at suomi24.fi
                CC: Armin.Le.Grand at me.com
            Blocks: 113510

Created attachment 148314
  --> https://bugs.documentfoundation.org/attachment.cgi?id=148314&action=edit
File causing CPU hit

Attachment is taken from bug 60118, re-attached for convenience as the original
was an archive.

I sometimes observed that with my wide desktop screen, having Calc maximized
prevented the CPU hammering. Thus, it is best to resize to a size where you
don't see much of the grey background on the right.

Bibisected with win32-6.3 to
https://gerrit.libreoffice.org/plugins/gitiles/core/+/d464d505fbf6e53a38afdd3661d320fac8c760d6%5E!/

Refactor calc non-linear ViewToDevice transform

Adding Cc: to Armin Le Grand

Same commit blamed for bug 121963

Repro also on Linux.

Arch Linux 64-bit
Version: 6.3.0.0.alpha0+
Build ID: 6e3c4ae8bca898700cde9caaff43c3a8a61eebc2
CPU threads: 8; OS: Linux 4.20; UI render: default; VCL: gtk3; 
Locale: fi-FI (fi_FI.UTF-8); UI-Language: en-US
Calc: threaded
Built on 13 January 2019


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=113510
[Bug 113510] [META] Bugs that cause CPU to run at 100%
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