[Libreoffice-bugs] [Bug 131740] TrueType fonts with Chinese slow down LibreOffice

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131740

Buovjaga <ilmari.lauhakangas at libreoffice.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ilmari.lauhakangas at libreoff
                   |                            |ice.org

--- Comment #4 from Buovjaga <ilmari.lauhakangas at libreoffice.org> ---
You could take a performance profile of the slow down.

Install debug packages for LibreOffice:
https://wiki.ubuntu.com/Debug%20Symbol%20Packages

Install perf and FlameGraph and do the trace:
https://wiki.documentfoundation.org/Development/How_to_debug#Performance_debugging_.28perf.29

So you run LibreOffice, then in a terminal you say

perf record -F 200 --call-graph dwarf,62000 --pid=`pidof soffice.bin`

Then you open the slow file.

You exit perf by Ctrl-C in the terminal.

Then you can create the SVG flamegraph.

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