[Qgis-psc] QGIS 2.18 bug fixing effort

[Giovanni Manghi]

a little update on the loss of performances in the latest versions of
QGIS (as pointed in several tickets in the tracker).

I used a:

758k polygon layer

qgis 2.18.7 and 2.14.14 on Ubuntu instelled from QGIS repositories
(the ones that also use Ubuntugis)
qgis master compiled by myself *without* any debug output.


a)  2.14.14

rendering time:
real    0m21.217s
user    0m17.120s
sys     0m0.908s

table
12 seconds to open the whole table


b) 2.18.7

rendering time:
real    0m25.341s
user    0m19.684s
sys     0m1.120s

table
in 9:30 minutes it loadaed about half of ~758k records (the I aborted)



c) mater

rendering time:
real    1m7.508s
user    0m47.144s
sys     0m0.640s

table
it took 8 minutes to load ~20k features of the ~758k total (then I aborted)



I guess we have an issue in both the next LTR as also QGIS 3



cheers!

-- G --







On Fri, May 5, 2017 at 10:14 AM, Giovanni Manghi
<giovanni.manghi at gmail.com> wrote:
> Hi Andreas and Alexander,
>
> the list of regression bugs (excluded the ones affecting ONLY master)
> and bugs causing crashes or data corruption is here:
>
> https://docs.google.com/spreadsheets/d/1frZQU8bwGX499WMvtOc6GDIWqEuSv3QHz3zc90TS46Q/edit?usp=sharing
>
> I'm trying to keep it updated as much as I can.
>
> There is a column that specifies if the regression has slip into 2.18
> since 2.14, to me that are the worst bugs as 2.18 will become LTR.
>
>
>
> Cheers!
>
> -- G --
>
>
>
> On Fri, May 5, 2017 at 10:02 AM, Andreas Neumann <andreas at qgis.org> wrote:
>> Hi Alex,
>>
>> Thank you for your reply.
>>
>> I'll cc Giovanni.
>>
>> Giovanni - can you please provide Alex a list of processing/analysis related
>> bugs/regressions - the most pressing ones?
>>
>> Alex: we'll be happy to pay for a couple of hours. We would be interested in
>> a regular relationship with core devs who are available to fix the most
>> pressing issues prior to every release and potentially also after.
>>
>> Can you estimate - how many hours or days you can dedicate to fixing issues?
>> I mean within the next 1-2 months and for QGIS 2.18
>>
>> I'll add you to our list of core devs who participate in our bug fixing
>> effort then -
>> https://docs.google.com/spreadsheets/d/1Cdh-6eAmVCdiZIQGMhu_Aqgg09tpxsC40BGXQJtYc54/edit#gid=1281977200
>>
>> Thanks,
>> Andreas
>>
>>
>> On 3 May 2017 at 18:39, Alexander Bruy <alexander.bruy at gmail.com> wrote:
>>>
>>> Hi Andreas,
>>>
>>> 2017-05-03 13:10 GMT+03:00 Andreas Neumann <andreas at qgis.org>:
>>> > I wonder if you would be interested / would have time - to assist us
>>> > with
>>> > our QGIS 2.18 bug fixing efforts - esp. with the processing issues?
>>>
>>> Sure I will be happy to help with this as much as I can.
>>>
>>> > We would pay some devs for up to 5 days (total 40h per dev) with a fixed
>>> > hourly rate of 100 €. Some devs can only contribute a day or two - which
>>> > is
>>> > also fine.
>>>
>>> I would like to donate my time to project.
>>>
>>> --
>>> Alexander Bruy
>>
>>
>>
>>
>> --
>>
>> --
>> Andreas Neumann
>> QGIS.ORG board member (treasurer)