[Libreoffice-bugs] [Bug 134263] Scrolling down in multipage view (8 pages a row) stutters/choppy (part 2)
bugzilla-daemon at bugs.documentfoundation.org
bugzilla-daemon at bugs.documentfoundation.org
Wed Jun 24 22:23:23 UTC 2020
https://bugs.documentfoundation.org/show_bug.cgi?id=134263
Telesto <telesto at surfxs.nl> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS|All |Windows (All)
--- Comment #7 from Telesto <telesto at surfxs.nl> ---
(In reply to Buovjaga from comment #4)
> A bit choppy, but nothing super alarming
I checked it against Linux
- GTK3 -> No complains
- GEN -> scrollbar clicking really responsive.. scrolling not slow
- QT5 -> Doesn't go well on my Lubuntu -> doesn't move at all (and complaining
about RGB64 blend not being supported)
Windows
Scrolling (scroll wheel) -> Slow (more or to compare with GEN)
Scrollbar clicking -> Not responsive
So could you please recheck with Windows.. it's quite bad ;-). This should be
noticeable with your powerful machine... However benchmarking it against Xisco
machine is of course preferred..
And somehow the thumbnail size matters too (5 pages 45% being really slow)
while 5 pages at 40% pretty OK. (Note: 23 inch screen; not high DPI). Not sure
what the effect of a high DPI screen would be.
50% of the CPU time is spend in ExtTextOutW GDI32
5% in GdiplusNotificationUnhook
5% in GdipCloneBitmapAreaI gdiplus
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