[Qgis-user] qgis and Large Format Print

[haubourg]

Hi All,
I tried to create a common environnement to help us test and reproduce
thoses crashes. 
Please find a zip  (220Mo) with datas and qgs projects here, complete test
report and screen captures of CPU/Memory state:
https://www.dropbox.com/sh/zg4zidwab83ym0d/VpxPA3euLI/QGIS_CRASH_COMPOSER
<https://www.dropbox.com/sh/zg4zidwab83ym0d/VpxPA3euLI/QGIS_CRASH_COMPOSER>  

here are my firsts conclusions:

- Making a fresh install of latest master with no plugin or setting *do not
often lead to crash (once only for 20-30 exports), since when pdf or image
raster if resolution is > 300 dpi, then printing just.. does nothing except
creating an empty pdf.* 
Two months ago, I had QGis computing several minutes and leading to a crash.
*Something has changed! No crash, but still no usable export *

- PDF Vector export has a 'tiling' issue of raster background. It seems to
consume less ressources than raster printing. 

- image export do warn user if memory usage is high. PDF export should do
the same. BUT, image export warns you, and does nothing.. just like pdf
export. no image is generated 


I would be pleased to have some feedbacks on your platforms and versions..
We reallly need to consolidate exports. Mapping in QGIS is really often
dedicated to export and printing.. We need it stable. 
Régis



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