[Qgis-developer] Loading features in bunch

[Paolo Cavallini]

Thanks a lot for the explanation, Martin!

Il 12 febbraio 2016 04:37:18 CET, Martin Dobias <wonder.sk at gmail.com> ha scritto:
>Hi Paolo
>
>This option was indeed superseded in 2.4 with introduction of
>multi-threaded rendering by interval-based refresh rate. The
>interval-based refresh is a better way of controlling refresh rate: it
>has consistent behavior (few complex features do not block refresh),
>it is not limited to just vector layers, and the number is easier to
>understand/tweak. The old option did not really do any extra
>performance tricks - simply increasing the number did fewer refreshes
>(less extra work), so the overall rendering time shrunk. The default
>of 250 ms for refresh is quite a conservative value already - so I do
>not expect it would make a difference to make it higher (but lowering
>it to something like 1 ms would make things slow).
>
>Cheers
>Martin
>
>
>On Fri, Feb 5, 2016 at 3:39 PM, Paolo Cavallini <cavallini at faunalia.it>
>wrote:
>> Hi all,
>> I kind of remember an option to increase the number of features
>loaded
>> before doing a redraw, that in some situations increased the general
>> speed for layers with lots of features. Now in master I cannot see it
>> back (just the interval for refresh): was I dreaming, or was it
>removed
>> sometimes? In case, could someone remind me why?
>> All the best, and thanks.
>> --
>> Paolo Cavallini - www.faunalia.eu
>> QGIS & PostGIS courses: http://www.faunalia.eu/training.html
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-- 
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