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<b><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Selection of imported elements very slow"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=139220#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Selection of imported elements very slow"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=139220">bug 139220</a>
from <span class="vcard"><a class="email" href="mailto:lj618@pobox.com" title="lj618@pobox.com">lj618@pobox.com</a>
</span></b>
<pre>Confirmed.
It isn't specific to imported PDFs. You can duplicate the problem like this:
Draw a small object like a filled ellipse. Select, use Duplicate to make 15
copies at a small offset. Now select all 16, copy, click off them, paste, move.
Repeat, doubling each time.
Here are the times I get to select N ellipses on 2 different PCs running older
and more recent LibreOffice. Note that PC #2 is much faster than #1 in general.
#1) Pentium-M, LibreOffice-6.2.8 32-bit on 32-bit Linux, Gtk2
# objects: seconds to select:
32 <1
64 <1
128 <1
256 <1
512 1
1024 2
#2) Core-2, LibreOffice-6.4.6 64-bit on 64-bit Linux, Gtk3
# objects: seconds to select:
32 <1
64 <1
128 1
256 3
512 17
1024 128
I think I would call this a non-linear performance regression.</pre>
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