[Qgis-user] Models execution times very different between QGIS 3.34.0 and QGIS 3.32.3

[Lorenzo-Outlook via QGIS-User]

I have been using the new version of QGIS 3.34.0 for a few days and have found 
that in running models created by the Graphics Modeler, there is very different 
performance between version 3.32.3 and 3.34.0.
I have several models created with the modeler including a very complex one 
with about 100 algorithms that until version 3.32.3 was executed in about 11 
minutes, while with version 3.34.0 the same model after more than 3 hours was 
executed ONLY 18% of the total!!!

In the case of simpler models with very few algorithms the execution times are 
similar with increasingly better times with version 3.32.3.

What happened ?

I checked and rechecked everything but not much can be done. When "Run" is 
pressed to execute the model, before the first script appears in the log, 
several minutes pass while in the previous version 3.32.3 the first model 
script was executed after a few seconds.

With the new version 3.34.0 it is impossible to run complex models!

Why this huge difference between the two versions?

Please check

Thank you
Lorenzo

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Re: [Qgis-user] QGIS uninstalled after GDAL PPA install

[Lorenzo-Outlook]

Thanks Ben

It is true, with the repo 'ubuntugis' the version of QGIS 3.10.2 is not the 
most recent but the libraries are definitely newer, GDAL 3.0.2 and PROJ4 6.2.1. 
It is a bit confusing that since the repo 'ubuntu' the QGIS 3.12.0 version is 
the most recent while the libraries are much less recent and the repo 'ltr' 
also has the older libraries but anyway for now I could work on different 
virtual machines. Of course in some cases I have compiled the libraries too but 
with QGIS there are many libraries connected and I prefer to rely on stable or 
unstable repos. When the new operating system 20.04 will arrive maybe it will 
be better to update to have everything updated.

Thanks again
Lorenzo


> Il giorno 6 mar 2020, alle ore 01:47, Ben Hur Pintor  ha 
> scritto:
> 
> Hi Lorenzo,
> 
> Ubuntu and QGIS user here as well. I use the ubuntugis-unstable for the most 
> recent libraries on Bionic (w/o needing to compile the libs myself). I'm 
> currently still on 3.10.2 since that's the most recent version in the 
> unstable PPA (w/ GDAL 3.0.2 and PROJ 6.2.1).
> 
> For Ubuntu, the ubuntugis-unstable PPA usually contains the most recent 
> library versions available. The main (universe) repos rarely update 
> themselves. Which is why GDAL 3.X and Proj 6.X is available via the unstable 
> PPA and not the main repo. 
> 
> One thing you can do is compile the libraries yourself for Bionic. 
> 
> Another is to wait for ubuntugis-unstable to update their packages.
> 
> Another is to wait for Focal (20.04) to be released. Based on the development 
> docs of focal, it'll be released with GDAL 3.0.4 
> (https://launchpad.net/ubuntu/focal/+source/gdal 
> <https://launchpad.net/ubuntu/focal/+source/gdal>) and  PROJ 6.3.1 
> (https://launchpad.net/ubuntu/focal/+source/proj 
> <https://launchpad.net/ubuntu/focal/+source/proj>) which looks great for 
> running the recent LRs and LTRs of QGIS. 
> 
> You can see the note on the QGIS documentation here 
> (https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu 
> <https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu>)
> 
> 
> All the best,
> Ben Hur
> 
> 
> On Fri, Mar 6, 2020, 08:01 Lorenzo-Outlook  <mailto:morettilore...@outlook.com>> wrote:
> Thank you very much!
> I completely removed the previous installation of QGIS 3.12 and installed the 
> LTR release QGIS 3.10.3 using 'qgis.org/ubuntu-ltr 
> <http://qgis.org/ubuntu-ltr>'. I also installed the server version and now 
> everything works. Great.
> Looking at the libraries used for QGIS I see that there is still GDAL 2.2.3 
> and PROJ4 4.9.3. Is there any hope to see these libraries updated to version 
> 3.x for GDAL and 6.x for PROJ4 in Ubuntu 18.04?
> Thanks again
> Lorenzo
> 
> 
> 
> > Il giorno 5 mar 2020, alle ore 14:50, Andre Joost 
> > mailto:andre%2bjo...@nurfuerspam.de>> ha 
> > scritto:
> > 
> > Am 05.03.20 um 00:06 schrieb Lorenzo-Outlook:
> >> Hi all I also was able to install the new version 3.12 in Ubuntu
> >> 18.04 following the instructions by eliminating the ubuntugis repo.
> >> But QGIS is not complete: the problem is strange because QGIS opens
> >> and inside it is missing many CRS projections (for example the
> >> geographical WGS84, EPSG:4326 or 3857 and others). It seems that the
> >> PROJ4 library version 4.9.3 with which QGIS is compiled does not
> >> contain some CRS. Everything else works but without these projections
> >> QGIS is not much need. Of course the server version also has this
> >> problem and is therefore unusable. I went back to the ubuntugis repo
> >> and reinstalled QGIS 3.10.2 which works fine. Did someone have the
> >> same problem or did it just happen to me? Bye Lorenzo
> > 
> > This might be a follow-up of QGIS 3.12 expecting PROJ 6.3.1 which is not 
> > yet available for Ubuntu (with or without ubuntugis).
> > 
> > You might switch to the QGIS ubuntu-ltr repo, which contains QGIS 3.10.3 at 
> > the moment.
> > 
> > HTH,
> > Andre Joost
> > 
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Re: [Qgis-user] QGIS uninstalled after GDAL PPA install

[Lorenzo-Outlook]

Thank you very much!
I completely removed the previous installation of QGIS 3.12 and installed the 
LTR release QGIS 3.10.3 using 'qgis.org/ubuntu-ltr'. I also installed the 
server version and now everything works. Great.
Looking at the libraries used for QGIS I see that there is still GDAL 2.2.3 and 
PROJ4 4.9.3. Is there any hope to see these libraries updated to version 3.x 
for GDAL and 6.x for PROJ4 in Ubuntu 18.04?
Thanks again
Lorenzo



> Il giorno 5 mar 2020, alle ore 14:50, Andre Joost 
>  ha scritto:
> 
> Am 05.03.20 um 00:06 schrieb Lorenzo-Outlook:
>> Hi all I also was able to install the new version 3.12 in Ubuntu
>> 18.04 following the instructions by eliminating the ubuntugis repo.
>> But QGIS is not complete: the problem is strange because QGIS opens
>> and inside it is missing many CRS projections (for example the
>> geographical WGS84, EPSG:4326 or 3857 and others). It seems that the
>> PROJ4 library version 4.9.3 with which QGIS is compiled does not
>> contain some CRS. Everything else works but without these projections
>> QGIS is not much need. Of course the server version also has this
>> problem and is therefore unusable. I went back to the ubuntugis repo
>> and reinstalled QGIS 3.10.2 which works fine. Did someone have the
>> same problem or did it just happen to me? Bye Lorenzo
> 
> This might be a follow-up of QGIS 3.12 expecting PROJ 6.3.1 which is not yet 
> available for Ubuntu (with or without ubuntugis).
> 
> You might switch to the QGIS ubuntu-ltr repo, which contains QGIS 3.10.3 at 
> the moment.
> 
> HTH,
> Andre Joost
> 
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Re: [Qgis-user] QGIS uninstalled after GDAL PPA install

[Lorenzo-Outlook]

Hi all
I also was able to install the new version 3.12 in Ubuntu 18.04 following the 
instructions by eliminating the ubuntugis repo. But QGIS is not complete: the 
problem is strange because QGIS opens and inside it is missing many CRS 
projections (for example the geographical WGS84, EPSG:4326 or 3857 and others). 
It seems that the PROJ4 library version 4.9.3 with which QGIS is compiled does 
not contain some CRS. Everything else works but without these projections QGIS 
is not much need. Of course the server version also has this problem and is 
therefore unusable. I went back to the ubuntugis repo and reinstalled QGIS 
3.10.2 which works fine.
Did someone have the same problem or did it just happen to me?
Bye
Lorenzo 


> Il giorno 1 mar 2020, alle ore 13:16, J. M  ha scritto:
> 
> Success!! I erased the four offending repositories and the installation went 
> ahead fine. It installed the latest version (3.12?) which I didn't expect, 
> and it appears to work on my OS. I ran apt-cache policy libgdal20 and it 
> returned 2.2.3, so that's perfect. I'll have to enable it somehow in Blender, 
> but that's another problem. 
> 
> My profound thanks to the team for helping me; you're incredible!
> 
> Cheers,
> Jimi.
> 
> On Fri, Feb 28, 2020 at 9:38 PM Andre Joost  > wrote:
> Am 28.02.20 um 20:48 schrieb J. M:
> > Hi Andre,
> >
> > Okay thanks once again... I'll have a go, though I'm not sure how to remove
> > them. Would it be 'sudo apt-get remove gdal-bin' or does it need 'sudo
> > apt-get remove gdal-bin 3.0.2+dfsg-1~bionic2'?
> 
> 
> The first one should be ok.
> 
> > I ask because I don't know
> > if gdal-bin is something generic used elsewhere and I have to denominate
> > that. As I don't really understand what those files are, I'm wary of
> > removing them without being sure of the syntax first. Can I be sure they
> > aren't needed for another program, for example Blender?
> 
> You can install gdal-bin later from the main Ubuntu repo, which will be 
> version 2.2.3. Blender should be happy with it. I doubt they support 
> GDAL 3 yet.
> 
> 
> >
> > So once those four files are removed I can try sudo apt-get install
> > libgdal20=2.2.3+dfsg-2 again? And once I have libgdal20 installed then I
> > can run sudo apt-get install qgis qgis-plugin-grass python3-qgis? If I'm
> > missing anything else then please let me know..
> 
> Run the apt-cache policy libgdal20 again. If it offers you version 2.2.3 
> only, then QGIS sould install properly.
> 
> 
> 
> HTH,
> Andre Joost
> 
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