[Libreoffice-bugs] [Bug 131909] Align left/right for large dataset is slow with text wrap on

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131909

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ilmari.lauhakangas at libreoff
                   |                            |ice.org
            Version|7.0.0.0.alpha0+             |6.3.0.0.alpha0+
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           Keywords|                            |bibisected, bisected, perf,
                   |                            |regression

--- Comment #6 from Buovjaga <ilmari.lauhakangas at libreoffice.org> ---
I repro on Win, but not on Linux. Linux takes 3 secs while master on my Win VM
takes 50 seconds. There is also some regression that makes it super slow to
open the file ("adapting row height"). Telesto: have you reported this slow
opening at some point? Or is it some improvement to the scientific accuracy of
row heights...

Bibisected with win32-6.3 to
https://git.libreoffice.org/core/commit/b7ddc514bff9bdf682abae537f990aa01dc2c0fb
Upgrade to latest HarfBuzz 2.3.1

It seems the time got worse later, though, but bibisecting this would be
insanely tedious.

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