[Bug 307544] PDF Thumbnails are created very slowly in Okular Active

[Aaron J. Seigo]

https://bugs.kde.org/show_bug.cgi?id=307544

--- Comment #1 from Aaron J. Seigo <aseigo at kde.org> ---
> It would be really helpful if the thumbnails could be created more quickly.

this may well be a Unicorn wish. 

it may be that with all the thumbnails being requested at once it causes a
bottleneck, and it may well be better to request fewer pages to be rendered at
a time. that may also help with the "starting from page 1 onwards" (though
really that needs to be "starting from the first thumbnail visible onwards"
otherwise if you are at page 200 you'll wait quiiiite a while for the
thumbnails ;)

however, this may already be as good as it can get with a managed thread pool
in the okular renderer, etc. it's also hard to know how good is good enough.
"more quickly" is not a measurable goal :)

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