[Qgis-user] Qgis slow start up

Marco Hugentobler marco at hugis.net
Thu Jan 21 15:19:24 EST 2010

Hm, on my laptop with ubuntu 9.10 and  current QGIS svn version, 
dcua_qgis140_relative_reduce6_1440x900_17.qgs opens in 3 seconds and 
dcua_qgis140_relative_reduce6_1440x900_19.qgs in 4 seconds.

Maybe William or Tom could test it on Mac and check with a debugger where it 
spends the time (if it does)?

Probably also important is what GDAL version you are using (in my case it's 
the current svn version of GDAL).


Am Donnerstag, 21. Januar 2010 20.20:00 schrieb Greg Coats:
> Using Qgis 1.4.0, for Mac OS X 10.6, downloaded from
>  http://www.kyngchaos.com/software/qgis I find that, at start up, the .qgs
>  project file for my 70 MB GIS project keeps the CPU 99% busy for 4
>  minutes, the .qgs project file for my 700 MB GIS project keeps the CPU 99%
>  busy for 8 minutes, and the .qgs project file for my 4000 MB GIS project
>  keeps the CPU 99% busy for 25 minutes. William Kyngesburye reports similar
>  results starting up my small Qgis project with Qgis 1.4.0, under Mac OS X
>  10.6. Craig Leat reports that his .qgs project files regularly take 25
>  minutes to start up, under Ubuntu. In a particularly good piece of news,
>  Giovanni Manghi reports starting up my small GIS project with Qgis 1.4.0
>  takes only 4 seconds, under Linux, which is more than 60 times faster than
>  I am experiencing.
> For all of my QGIS projects, I observe that AFTER start up, Qgis QUICKLY
>  pans, and zooms in and out. ESRI ArcGIS starts up all of my GIS projects
>  in less than 10 seconds.
> This slow start up by Qgis 1.4.0 is the last remaining obstacle preventing
>  me, and others, from adopting, and promoting Qgis. My small Qgis project
>  can be downloaded from
>  http://homepage.mac.com/gregcoats/jp2/images/dcua_reduce6_01.zip I will
>  provide $1,000.00 for a verifiably solution that yields start up times
>  from .qgs project files of no more than 30 seconds, delivered this month,
>  and $500.00 for a solution delivered next month. Greg Coats

Dr. Marco Hugentobler
HUGIS - GIS programming and consulting
Webereistr. 66
CH-8134 Adliswil
marco at hugis.net
Technical Advisor QGIS Project Steering Committee

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