Re: [QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Nyall Dawson]

On 29 May 2017 at 20:21, Giovanni Manghi  wrote:
> Hi Nyall!
>
>> Thanks for the confirmation. Just to clarify, this fix was part of the
>> sponsored bug fixing effort which is funded by the project from
>> donated funds. So the real thanks here belong to everyone who has
>> donated to QGIS in the past and made this possible!
>
>
> sorry for asking again, is the loss of rendering speed performances
> (or better, time to fully load large vector layers) we see now  in
> master (at least with some datasets is quite noticeable, like 20/30%
> slower) to be considered ok (you mentioned at some point more
> stability) or to be considered an issue?

I'd call that an issue. I haven't had a chance to bisect this one yet
- I think we can wait till closer to release and if it's still and
issue I'll track it down.

Nyall
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Re: [QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Giovanni Manghi]

Hi Nyall!

> Thanks for the confirmation. Just to clarify, this fix was part of the
> sponsored bug fixing effort which is funded by the project from
> donated funds. So the real thanks here belong to everyone who has
> donated to QGIS in the past and made this possible!


sorry for asking again, is the loss of rendering speed performances
(or better, time to fully load large vector layers) we see now  in
master (at least with some datasets is quite noticeable, like 20/30%
slower) to be considered ok (you mentioned at some point more
stability) or to be considered an issue?

thanks!

-- G --
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Re: [QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Nyall Dawson]

On 29 May 2017 at 15:30, Ted  wrote:
> Hi Giovanni
>
> Yes, confirm that it is working well now
> https://www.youtube.com/watch?v=qBh0pzI2A5c
>
> from over 2 min to 4 seconds to load the same table.
>
> BIG thanks for everyone behind the scene. I believe the fix is done by
> Nyall, so a spacial thanks to him.

Thanks for the confirmation. Just to clarify, this fix was part of the
sponsored bug fixing effort which is funded by the project from
donated funds. So the real thanks here belong to everyone who has
donated to QGIS in the past and made this possible!

Nyall
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Re: [QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Ted]

Hi Giovanni

Yes, confirm that it is working well now
https://www.youtube.com/watch?v=qBh0pzI2A5c

from over 2 min to 4 seconds to load the same table.

BIG thanks for everyone behind the scene. I believe the fix is done by
Nyall, so a spacial thanks to him.

read over and understand that this issue was in discussion for quite some
time. Glad its fixed now.

Cheers
ted


On Fri, May 26, 2017 at 4:59 PM, Giovanni Manghi 
wrote:

> Hi, know issue,
>
> already lengthly analyzed and already fixed, just wait for the next
> builds (2.18.9).
>
>
> cheers
>
> -- G --
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Re: [QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Giovanni Manghi]

Hi, know issue,

already lengthly analyzed and already fixed, just wait for the next
builds (2.18.9).


cheers

-- G --




>
> Hi,
>
> I'm facing a HIGHLY DEGRADED performance with attribute table opening with
> version 2.18.x (2.18.8 and 2.18.7) when we have more than 100K rows. (in
> this case 161K)
>
> I'm looking at an OLD application done 5 years back with a custom QGIS 1.7,
> PostgreSQL 9.0 and PostGIS.
>
> The performance at that time was high commendable and it worked very well.
> See the video here;
> https://www.youtube.com/watch?v=3rjeqgFK5GA
> (this video was taken on a Virtual Machine)
>
> Recently we stepped into upgrade the technology stack and to my surprise,
> the current version of QGIS 2.18.8 is way TOO slow and this goes all
> against the QGIS in the Government environment.
>
> While keeping the DB on the VM environment, we tested it on different
> platform and version;
>
> QGIS 2.18.8 (latest) ruining on Windows 10 environment
> https://www.youtube.com/watch?v=k19tEqSK-1Y&t=64s
> Took nearly 2 minutes to open !!!
>
> QGIS 2.18.7 ruining on MacOS environment
> https://www.youtube.com/watch?v=S1eg2K17Z1E&t=15s
> Again took more than 2 minutes to open !!!
>
> QGIS 2.14.14 (LTR) ruining on MacOS environment
> https://www.youtube.com/watch?v=Sv-qklLFCHA
> Took only 5 seconds to open :)
>
>
> So, it appears that something has gone SERIOUSLY WRONG between the version
> 2.14.x and 2.18.x
>
> Since 2.18.x is marked as LTR version, I really hope this issue is fixed
> since most of the government environments adopt only the LTR version and
> with such performance it goes against QGIS.
>
> The next LTR is 3.2 which is more than a year later. Can you please look
> into this issue?
>
> Thanks and Cheers !
>
>
> Ted
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>
> Message: 5
> Date: Fri, 26 May 2017 10:21:41 +0800
> From: Ganeshkumar Shanmugam 
> To: C Hamilton 
> Cc: qgis-developer , qgis-user
> 
> Subject: Re: [QGIS-Developer] A Couple of Plugin Ideas
> Message-ID:
> 
> Content-Type: text/plain; charset="utf-8"
>
> hi
>
>
> Geospatial Animator
>> What I am thinking of is a plugin where you can define a series key
>> locations keeping track of the (X,Y) coordinate and zoom level.
>> Additionally there would be a step size and it would output either
>> rendered frames or a video.
>>
>>
> Have you looked at this plugin? some similarity...
>
> https://anitagraser.com/projects/time-manager/
>
>
> Ganesh
>
>
>
>
> On Fri, May 26, 2017 at 3:53 AM, C Hamilton  wrote:
>
>> I have been toying with writing a couple of QGIS plugins and wanted to
>> check to see if anyone else is doing something similar and to see if there
>> is interest.
>>
>>
>> 1. Geospatial Animator
>> What I am thinking of is a plugin where you can define a series key
>> locations keeping track of the (X,Y) coordinate and zoom level.
>> Additionally there would be a step size and it would output either rendered
>> frames or a video.
>>
>> 2. Another Measure Tool
>> As a preface I was looking at some old archaeological records and it was
>> giving site locations based off of the previous location with a distance
>> and bearing. As far as I can tell there is no tools that interactively
>> gives both of these values.
>>
>> I would like a measure tool that provides the distance between points A &
>> B, the bearing from point A to B, and the bearing from point B to A.
>>
>> I would appreciate any thoughts you have or whether someone is already
>> working on this.
>>
>> Thanks,
>>
>> Calvin
>>
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> Message: 6
> Date: Fri, 26 May 2017 06:37:33 -
> From: nore...@qgis.org
> To: mb...@hsr.ch, qgis-developer@lists.osgeo.org
> Subject: [QGIS-Developer] Plugin [1230] Vector Tiles Reader approval
> notification.
> Message-ID: <20170526063733.21141.4096@320558c5528b>
> Content-Type: text/plain; charset="utf-8"
>
>
> Plugin Vector Tiles Reader approval by pcav.
> The plugin version "[1230] Vector Tiles Reader 0.11.0 Experimental" is now 
> approved
> Link: http://plugins.qgis.org/plugins/vector_tiles_reader/
>
>
> --
>
> Message: 7
> Date: Fri, 26 May 2017 10:00:03 +0200
> From: Carlos López PSIG 
> To: List QGIS developer 
> Subject: [QGIS-Developer] Error: Select by expression not show fileds
> Message-ID:
> 
> Content-Type: text/plain; 

[QGIS-Developer] QGIS 2.18.x Attribute Table Performance

[Ted]

Hi,

I'm facing a HIGHLY DEGRADED performance with attribute table opening with
version 2.18.x (2.18.8 and 2.18.7) when we have more than 100K rows. (in
this case 161K)

I'm looking at an OLD application done 5 years back with a custom QGIS 1.7,
PostgreSQL 9.0 and PostGIS.

The performance at that time was high commendable and it worked very well.
See the video here;
https://www.youtube.com/watch?v=3rjeqgFK5GA
(this video was taken on a Virtual Machine)

Recently we stepped into upgrade the technology stack and to my surprise,
the current version of QGIS 2.18.8 is way TOO slow and this goes all
against the QGIS in the Government environment.

While keeping the DB on the VM environment, we tested it on different
platform and version;

QGIS 2.18.8 (latest) ruining on Windows 10 environment
https://www.youtube.com/watch?v=k19tEqSK-1Y&t=64s
Took nearly 2 minutes to open !!!

QGIS 2.18.7 ruining on MacOS environment
https://www.youtube.com/watch?v=S1eg2K17Z1E&t=15s
Again took more than 2 minutes to open !!!

QGIS 2.14.14 (LTR) ruining on MacOS environment
https://www.youtube.com/watch?v=Sv-qklLFCHA
Took only 5 seconds to open :)


So, it appears that something has gone SERIOUSLY WRONG between the version
2.14.x and 2.18.x

Since 2.18.x is marked as LTR version, I really hope this issue is fixed
since most of the government environments adopt only the LTR version and
with such performance it goes against QGIS.

The next LTR is 3.2 which is more than a year later. Can you please look
into this issue?

Thanks and Cheers !


Ted
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