https://bugs.documentfoundation.org/show_bug.cgi?id=96753
Michael Meeks <michael.me...@collabora.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|big file opening and |KDE: big file opening and
|navigating slow (compared |navigating is slow vs. 4.3
|with 4.3 series) |
--- Comment #22 from Michael Meeks <michael.me...@collabora.com> ---
Callgrind profile shows this is run with the KDE / Qt backend. I see around
10bn pcycles inside OutputDevice::Layout - of the ~22bn in the trace. That time
is split between harfbuzz and fontconfig. Is it possible you have some huge &
complicated fontconfig setup ? or a vast number of fonts and/or shapers ?
Oddly nothing jumps out at me from the trace as obviously, dominatingly stupid
=)
You say it is slow to load too ? the doc load supposedly takes 4bn pcycles
which doesn't seem unreasonable.
No obvious inspiration here - sorry ...
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