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Hi Giedrius

Can you please provide more information about the problems you are experiencing.

• What type of data are you working with?
• Do you actually change data (geometries, attributes...)?
• How big is your dataset?
• Are you able to provide a test dataset or a screencapture of such an edit session?

Thank you very much

Hello,
can confirm this behavior also on windows machine.
Intensive digitizing makes work more and more slower, especially when create new geometries and save changes.
Then, best is to close QGIS and start it again.

Maybe, the "undo/redo" function handling in the memory could be a reason?
Gerhard

About 45 edit sessions resulting in a total of 93 points starting from the attached shapefile (mem_leak) don't change the responsiveness or memory consumption of a recent master build here...

Can you try the following:

• Start QGIS from the console
• Reproduce the problem
• While QGIS is hanging / unresponsive, force QGIS to crash and print a stacktrace (E.g. by pressing Ctrl + \\ on the console)
• Paste the result here (Maybe some QGIS debug libraries will need to be installed to produce a useful output, I am not sure about debian/ubuntu (maybe a qgis-dbg package?) )

Confirmed here although executing QGIS with --noplugins does disappear the issue (same OS).

Please test with --noplugins parameter and let us know if the issue still happens for you!

For me it was enough to disable the Multipart Split plugin!

--noplugins fixed it, but I did not have the Multipart Split plugin

so hitting ctrl-c (in terminal) when 'hanging' during a normal round, showed me de pyhon debug console, showing:

Traceback (most recent call last):
File "/home/richard/.qgis2/python/plugins/traceDigitize/traceDigitize.py", line 99, in toggle
QObject.disconnect(layer,SIGNAL"),self.toggle)
KeyboardInterrupt

So apparently with me it was traceDigitze plugin. Disabling that one worked for me...

So apparently these plugins have something in common which screws up QGIS editing... actions calling actions or so?

Salvatore Larosa wrote:

Confirmed here although executing QGIS with --noplugins does disappear the issue (same OS).

Please test with --noplugins parameter and let us know if the issue still happens for you!

with --noplugins parameter works great. checking the problem by turning off one plug. When you turn off the Rectangle Ovals Digitizing  plugin problem disappeared. Thank you!

Richard Duivenvoorde wrote:

--noplugins fixed it, but I did not have the Multipart Split plugin

so hitting ctrl-c (in terminal) when 'hanging' during a normal round, showed me de pyhon debug console, showing:

Traceback (most recent call last):
File "/home/richard/.qgis2/python/plugins/traceDigitize/traceDigitize.py", line 99, in toggle
QObject.disconnect(layer,SIGNAL"),self.toggle)
KeyboardInterrupt

So apparently with me it was traceDigitze plugin. Disabling that one worked for me...

So apparently these plugins have something in common which screws up QGIS editing... actions calling actions or so?

good catch, same problem with the same SIGNAL: layer.editingStopped.disconnect(self.toggle)

Matthias Kuhn wrote:

These are bugs in the plugins and need to be fixed in each one individually.

It seems that these plugins (verified only for Multipart Split) are connecting several times to the editingStarted signal and fail to disconnect it again properly. Because for every existing connection a new connection is made, this results in an exponential growth of connections, so the number of times the code is invoked doubles with every startEditing call.

To validate, just remove the try/except statements around the connect/disconnect calls and watch the number of exceptions increase.

Rectangle Ovals Digitizing  plugin also. ctrl-c interminal:

An error has occured while executing Python code:

Traceback (most recent call last):
File "/home/giedrius/.qgis2/python/plugins/rectovalDigit/rectovaldigit.py", line 209, in toggle
QObject.disconnect(layer,SIGNAL"),self.toggle)
KeyboardInterrupt

Python version:
2.7.3 (default, Jan 2 2013, 14:09:21)
[GCC 4.7.2]

QGIS version:
2.1.0-Master Master, exported

I noticed that after restarting qgis Rectangle ovals Digitizing disappears from the menu bars, but in Plugin Manager is marked as active. When reactivating it again appears in the menu bar. After this action, the problem does not recur.

When disabling signals get disconnected, and not necessarily get reconnected when re-enabling. E.g. the Multipart Split would reconnect it on the next change of the active layer.

I would like to kindly ask you to please report a bug for any affected plugin you find, so these issues can be ironed out.

Multipart Split #9291

Agreed, very important to open specific tickets for individual plugins. Please do it; ask for help if needed.

Ok, done for:

traceDigitize: https://sourceforge.net/apps/trac/geoing/ticket/3
and
rectangles oval digitizing: #9293

I have made a patch for the multipart split plugin. Please confirm that it's working, and report in #9291.

I have also notice the same problem in Numerical Digitize and Numerical Vertex Edit plugins. I think they are already included in this ticket