[Libreoffice-bugs] [Bug 129915] New: Calc freezes (slow performance and high CPU usage) with column selection

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=129915

            Bug ID: 129915
           Summary: Calc freezes (slow performance and high CPU usage)
                    with column selection
           Product: LibreOffice
           Version: 6.3.4.2 release
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: suokunlong at 126.com

Description:
Selecting columns in a spreadsheet is very slow with very high CPU usage.

Steps to Reproduce:
1. Open the attached test ods file.
2. Select the entire columns A:C (i.e., click on the column header A and drop
until header C).
3. Click any cell to release the selection 
4. Repeate step 2 and 3 several times.

Actual Results:
Calc freezes with 100% CPU usage of one core, and takes a long time for the
selection to complete.

Expected Results:
The selection should complete within 3 seconds.


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.3.4.2
Build ID: 60da17e045e08f1793c57c00ba83cdfce946d0aa
CPU 线程: 4; 操作系统: Linux 5.0; UI 渲染: 默认; VCL: gtk3; 
区域语言: zh-CN (zh_CN.UTF-8); UI 语言: zh-CN
Calc: threaded

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