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usvg slow #468

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JoKalliauer opened this issue Oct 6, 2021 · 2 comments
Closed

usvg slow #468

JoKalliauer opened this issue Oct 6, 2021 · 2 comments

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@JoKalliauer
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file: https://gitlab.gnome.org/GNOME/librsvg/uploads/028b1646a203b470ac46c3281c9b12f7/case.svg

time

usvg resvg librsvg2.50 inkscape batik
86,875s 100,089s 0,331s 1,605s 20,416s

Copyright

license:
-no permission
-maybe below Treshhold of orginality

author: https://gitlab.gnome.org/oleksandr.khylobokyi

source: https://gitlab.gnome.org/GNOME/librsvg/-/issues/683
@Shnatsel
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Shnatsel commented Dec 7, 2021 •
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I expected it to be slow due to some filter, but that is - surprisingly - not the case.

38% of the time is spent in usvg::converter::is_id_used. And another 63% in rctree::NodeEdge::next_item, mostly on incrementing reference counts.

Profile: https://share.firefox.dev/3pDAEK2

Tested on commit 5e4adf9

@RazrFalcon
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A weird edge-case. Too many very heavy patterns.

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@Shnatsel @RazrFalcon @JoKalliauer