https://bugs.kde.org/show_bug.cgi?id=506760

[email protected] changed:

           What    |Removed                     |Added
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             Status|REPORTED                    |NEEDSINFO
                 CC|                            |[email protected]
         Resolution|---                         |WAITINGFORINFO

--- Comment #1 from [email protected] ---
Hello! Thank you for the bug report. 

Saving data successfully is important, however there's some things about your
report that indicate this is more of a feature request, and not a bug. Please
note that the Importance level should be set to Critical in the case of a bug
that causes data loss, and set to Wish for feature requests.

In trying to reproduce the issue, I created a new file at "30k x 20k"
resolution (30000 x 20000), at 300dpi, in RGB/Alpha, 8-bit integer/channel
depth, with sRGB built-in profile. This results in a very big file, with a
single paint layer estimating at over 2GiB of RAM! If this is the resolution
you are working at, this may be cause for "frozen" saves occurring often. A
project at this size with a single layer containing just scribbled lines over
the canvas took me roughly 25 seconds to save, where most of the time the save
appeared to freeze or hang (though the program itself did not freeze).

Can you please confirm that this is the resolution you are working at? "30k" is
shorthand for "30,000", which is very large for any image. This resolution
seems a bit unmaintainable as a workflow for any reasonably sized project, so I
would guess you are actually working at 3000x2000 (3k x 2k), and not
30000x20000, but would like clarification to be sure. 

You also mentioned using an "SD plugin" a quick search for this finds Stable
Diffusion related plugins. While this could impact Krita's performance as well,
that alone shouldnt be the cause of slow saves or freezes. However I
recommended testing things to confirm you can reproduce the problem without any
plugins installed/enabled as well.

Whether this is more of a feature request than a bug report, I do agree that
being able to export layers separately from full-project save operations may be
a good emergency recovery option, in the event a full-save ends up frozen. This
would probably necessitate having such operations occur on a separate thread
however. 

Finally, I have not encountered instances of a "frozen" save when normally
working on projects on the 5.2.11 AppImage at smaller resolutions than what was
reported, nor any versions later than that up to 5.3.3/6.0.3. Saves have been
relatively quick and don't appear to freeze for more than a couple seconds on
bigger, more complex works. The times I have had unrelated crashes, autosave
backups managed to restore the majority of lost work as well.

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