[Digikam-devel] [Bug 131277] New: Memory leak in image editor

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[Digikam-devel] [Bug 131277] New: Memory leak in image editor

krienke
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http://bugs.kde.org/show_bug.cgi?id=131277         
           Summary: Memory leak in image editor
           Product: digikam
           Version: unspecified
          Platform: SuSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: krienke uni-koblenz de


Version:           0.9.0beta1 (using KDE KDE 3.5.3)
Installed from:    SuSE RPMs
Compiler:          gcc 4.1 as well as 4.0.2
OS:                Linux

Recently I noticed that it seems that imageeditor in 0.9.0 beta1 has a memory leak. When I look at say 50 photos using imageeditor without editing any of the images, just look at them and run through all of these 50 photos my system looses about 300MB of memory. Since I have only a total of 500MB RAM, swap is beeing used at this time more and more. Digikam is getting noticeably more and more slower when loading the next photo in imageeditor since swapping occurs. The strange thing is, that this memory/swap does not seem to be released when I terminate digikam completely. The amount of used swap space (reported by free) remains the very same even a day later this amount is still marked "used". So far only a reboot helped to reclaim the space. So I guess that there must be a memory leak inside the image editor. I found this effect on my suse10.0 (500MB Ram) as well on a suse10.1 (1GB RAM) system. In the latter case it simply take some more photos to run through until on this system swap space is beeing used forever either.

Thanks
Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 08:26 -------
Hi krienke,

This is certainly a memory leak. Please just re-run digiKam using valgring following the instructions in the HACKING file (at end). Just report the console messages in this thread.

Thanks in advance

Gilles Caulier
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Re: [Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
Am Montag, 24. Juli 2006 08:26 schrieb Gilles Caulier:

> ------- You are receiving this mail because: -------
> You are the assignee for the bug, or are watching the assignee.
>
> http://bugs.kde.org/show_bug.cgi?id=131277
>
>
>
>
> ------- Additional Comments From caulier.gilles free fr  2006-07-24 08:26
> ------- Hi krienke,
>
> This is certainly a memory leak. Please just re-run digiKam using valgring
> following the instructions in the HACKING file (at end). Just report the
I ran valgrind --tool=memcheck --leak-check=full --error-limit=no /opt/kde3/bin/digikam
but there was no information in the output about  a big leak as I would have expected because of the observed decrease in free memory:

<ran through ~20 photos in image editor, then terminated digikam>
==7042== LEAK SUMMARY:
==7042==    definitely lost: 6,349 bytes in 75 blocks.
==7042==    indirectly lost: 40,174 bytes in 879 blocks.
==7042==      possibly lost: 400 bytes in 3 blocks.
==7042==    still reachable: 437,184 bytes in 7,824 blocks.
==7042==         suppressed: 0 bytes in 0 blocks.
==7042== Reachable blocks (those to which a pointer was found) are not shown.
==7042== To see them, rerun with: --show-reachable=yes


However afterwards I ran free -m then started digikam and in the imageeditor ran through 50 photos,
terminated digikam and then again ran free -m:

[krienke@bliss:~] 589 > free -m
                    total       used       free     shared    buffers     cached
Mem:          1012        687        324          0          9        571
-/+ buffers/cache:        106        905
Swap:         2055        208       1846

<run of digikam>

[krienke@bliss:~] 589 > free -m
                   total       used       free     shared    buffers     cached
Mem:          1012        677        335          0          4        436
-/+ buffers/cache:        236        775
Swap:         2055        377       1677

In this case the usage of swap increased by ~160MB which is the strange behaviour I
observed but valgrind does not say anything. I do not understand this.

Next I started digikam once more again looked at the very same 50 photos in imageeditor
and then terminated  digikam again. The free calls are again from before starting digikam
and after terminating it:

krienke@bliss:~] 587 > free -m
                    total       used       free     shared    buffers     cached
Mem:          1012        688        323          0         10        449
-/+ buffers/cache:        228        783
Swap:         2055        375       1679

<digikam run. Looked at  50 photos in imageeditor>

[krienke@bliss:~] 588 > free -m
                   total       used       free     shared    buffers     cached
Mem:          1012        694        317          0          6        390
-/+ buffers/cache:        296        715
Swap:         2055        570       1484
 
No again another 125 MB of swap has been eaten up.

Any idea by what this behaviour might been caused?

Thanks
Rainer
--
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Universitaetsstrasse 1, 56070 Koblenz, Tel: +49 261287 -1312, Fax: -1001312
Mail: [hidden email], Web: http://www.uni-koblenz.de/~krienke
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 10:24 -------
Am Montag, 24. Juli 2006 08:26 schrieb Gilles Caulier:
[bugs.kde.org quoted mail]

I ran valgrind --tool=memcheck --leak-check=full --error-limit=no /opt/kde3/bin/digikam
but there was no information in the output about  a big leak as I would have expected because of the observed decrease in free memory:

<ran through ~20 photos in image editor, then terminated digikam>
==7042== LEAK SUMMARY:
==7042==    definitely lost: 6,349 bytes in 75 blocks.
==7042==    indirectly lost: 40,174 bytes in 879 blocks.
==7042==      possibly lost: 400 bytes in 3 blocks.
==7042==    still reachable: 437,184 bytes in 7,824 blocks.
==7042==         suppressed: 0 bytes in 0 blocks.
==7042== Reachable blocks (those to which a pointer was found) are not shown.
==7042== To see them, rerun with: --show-reachable=yes


However afterwards I ran free -m then started digikam and in the imageeditor ran through 50 photos,
terminated digikam and then again ran free -m:

[krienke bliss:~] 589 > free -m
                    total       used       free     shared    buffers     cached
Mem:          1012        687        324          0          9        571
-/+ buffers/cache:        106        905
Swap:         2055        208       1846

<run of digikam>

[krienke bliss:~] 589 > free -m
                   total       used       free     shared    buffers     cached
Mem:          1012        677        335          0          4        436
-/+ buffers/cache:        236        775
Swap:         2055        377       1677

In this case the usage of swap increased by ~160MB which is the strange behaviour I
observed but valgrind does not say anything. I do not understand this.

Next I started digikam once more again looked at the very same 50 photos in imageeditor
and then terminated  digikam again. The free calls are again from before starting digikam
and after terminating it:

krienke bliss:~] 587 > free -m
                    total       used       free     shared    buffers     cached
Mem:          1012        688        323          0         10        449
-/+ buffers/cache:        228        783
Swap:         2055        375       1679

<digikam run. Looked at  50 photos in imageeditor>

[krienke bliss:~] 588 > free -m
                   total       used       free     shared    buffers     cached
Mem:          1012        694        317          0          6        390
-/+ buffers/cache:        296        715
Swap:         2055        570       1484
 
No again another 125 MB of swap has been eaten up.

Any idea by what this behaviour might been caused?

Thanks
Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 10:28 -------
Perhaps the memory leak is caused by a library used by digiKam image editor. Please check witch libs releases you use on your system :

- Exiv2 (metadata management)
- lcms (color management)
- libjpeg (jpeg files acess)
- libpng (png files acess)
- libtiff (tiff files acess)

Gilles
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Guillaume Laurent
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------- Additional Comments From glaurent telegraph-road org  2006-07-24 11:25 -------
krienke : 'free' won't tell you anything useful about this problem. The fact that swap space is not recovered is perfectly normal, it won't be until the processes that have been swapped on disk are swapped back into memory. The only thing you should look at is the size of the digikam process while it's running.
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 11:28 -------
Am Montag, 24. Juli 2006 10:28 schrieb Gilles Caulier:

> ------- Additional Comments From caulier.gilles free fr  2006-07-24 10:28
> ------- Perhaps the memory leak is caused by a library used by digiKam
> image editor. Please check witch libs releases you use on your system :
>
> - Exiv2 (metadata management)
> - lcms (color management)
> - libjpeg (jpeg files acess)
> - libpng (png files acess)
> - libtiff (tiff files acess)
>
> Gilles


Ok. My versions on the suse10.1 system I am sitting at now are:

Exiv2:   0.9.1
libcms: 1.15
libjpeg: 6.2.0
libpng: 1.2.8
libtiff: 3.8.2

On my suse10.0 system the libs are:
Exiv2:   0.10
libcms: 1.14
libjpeg: 6.2.0
libpng: 1.2.8
libtiff: 3.7.3

Thanks
Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 11:50 -------
I'm use also Suse 10.1 here without memory leak and swap.

Note I recommend you to use Exiv2 10.1...

Gilles
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Re: [Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
In reply to this post by Guillaume Laurent
Am Montag, 24. Juli 2006 11:25 schrieb [hidden email]:

> ------- You are receiving this mail because: -------
> You are the assignee for the bug, or are watching the assignee.
>
> http://bugs.kde.org/show_bug.cgi?id=131277
>
>
>
>
> ------- Additional Comments From glaurent telegraph-road org  2006-07-24
> 11:25 ------- krienke : 'free' won't tell you anything useful about this
> problem. The fact that swap space is not recovered is perfectly normal, it
> won't be until the processes that have been swapped on disk are swapped
> back into memory. The only thing you should look at is the size of the
> digikam process while it's running.
You are right processes are beeing swapped out, but since I did not start any new
processes during my tests (except for digikam itself) the swap space should only
grow when digikam is started for the first time. However I can repeat this behaviour. So if I
terminate digikam then start it again and look at the very same photos then
terminate digikam and start it again etc... then swap space usage is increasing
with each try. This is not normal. Here is a sequence of free calls after I terminated
digikam. After the free call I restarted it and looked at the very same photos again.
All in all I did this 10 times (see numbers I added). And after the 10th try the system used 1.4GB swap whereas
it had no swap usage initially. Below you can see how swap  usage is increasing
each time I restarted digikam and looked at the photos:

1                   total       used       free     shared    buffers     cached
Mem:          1012        796        215          0         45        519
-/+ buffers/cache:        231        780
Swap:            0          0          0
[krienke@bliss:~] 619 > free -m
 2                  total       used       free     shared    buffers     cached
Mem:          1012        856        156          0          5        538
-/+ buffers/cache:        312        699
Swap:         2055          0       2055
[krienke@bliss:~] 619 > free -m
3                   total       used       free     shared    buffers     cached
Mem:          1012        718        293          0          4        351
-/+ buffers/cache:        363        649
Swap:         2055        251       1803
[krienke@bliss:~] 619 > free -m
4                    total       used       free     shared    buffers     cached
Mem:          1012        591        420          0          5        363
-/+ buffers/cache:        222        789
Swap:         2055        363       1691
[krienke@bliss:~] 619 > free -m
5                    total       used       free     shared    buffers     cached
Mem:          1012        647        364          0          3        362
-/+ buffers/cache:        282        729
Swap:         2055        538       1516
[krienke@bliss:~] 619 > free -m
6                    total       used       free     shared    buffers     cached
Mem:          1012        541        470          0          2        304
-/+ buffers/cache:        235        776
Swap:         2055        692       1362
[krienke@bliss:~] 619 > free -m
7                    total       used       free     shared    buffers     cached
Mem:          1012        530        481          0          1        256
-/+ buffers/cache:        272        740
Swap:         2055        927       1127
[krienke@bliss:~] 619 > free -m
8                    total       used       free     shared    buffers     cached
Mem:          1012        507        504          0          1        246
-/+ buffers/cache:        259        752
Swap:         2055       1117        937
[krienke@bliss:~] 619 > free -m
 9                   total       used       free     shared    buffers     cached
Mem:          1012        590        422          0          1        335
-/+ buffers/cache:        252        759
Swap:         2055       1229        825
[krienke@bliss:~] 619 > free -m
10                    total       used       free     shared    buffers     cached
Mem:          1012        557        454          0          2        270
-/+ buffers/cache:        285        726
Swap:         2055       1485        569
[krienke@bliss:~] 619 >  


Next I terminated my KDE session and kdm as well and restarted it and logged in again.
The swap space was still used. This should not happen as I think.  
Am I the only one having this behaviour?

Thanks
Rainer
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Universitaetsstrasse 1, 56070 Koblenz, Tel: +49 261287 -1312, Fax: -1001312
Mail: [hidden email], Web: http://www.uni-koblenz.de/~krienke
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 13:39 -------
Am Montag, 24. Juli 2006 11:25 schrieb glaurent telegraph-road org:
[bugs.kde.org quoted mail]

You are right processes are beeing swapped out, but since I did not start any new
processes during my tests (except for digikam itself) the swap space should only
grow when digikam is started for the first time. However I can repeat this behaviour. So if I
terminate digikam then start it again and look at the very same photos then
terminate digikam and start it again etc... then swap space usage is increasing
with each try. This is not normal. Here is a sequence of free calls after I terminated
digikam. After the free call I restarted it and looked at the very same photos again.
All in all I did this 10 times (see numbers I added). And after the 10th try the system used 1.4GB swap whereas
it had no swap usage initially. Below you can see how swap  usage is increasing
each time I restarted digikam and looked at the photos:

1                   total       used       free     shared    buffers     cached
Mem:          1012        796        215          0         45        519
-/+ buffers/cache:        231        780
Swap:            0          0          0
[krienke bliss:~] 619 > free -m
 2                  total       used       free     shared    buffers     cached
Mem:          1012        856        156          0          5        538
-/+ buffers/cache:        312        699
Swap:         2055          0       2055
[krienke bliss:~] 619 > free -m
3                   total       used       free     shared    buffers     cached
Mem:          1012        718        293          0          4        351
-/+ buffers/cache:        363        649
Swap:         2055        251       1803
[krienke bliss:~] 619 > free -m
4                    total       used       free     shared    buffers     cached
Mem:          1012        591        420          0          5        363
-/+ buffers/cache:        222        789
Swap:         2055        363       1691
[krienke bliss:~] 619 > free -m
5                    total       used       free     shared    buffers     cached
Mem:          1012        647        364          0          3        362
-/+ buffers/cache:        282        729
Swap:         2055        538       1516
[krienke bliss:~] 619 > free -m
6                    total       used       free     shared    buffers     cached
Mem:          1012        541        470          0          2        304
-/+ buffers/cache:        235        776
Swap:         2055        692       1362
[krienke bliss:~] 619 > free -m
7                    total       used       free     shared    buffers     cached
Mem:          1012        530        481          0          1        256
-/+ buffers/cache:        272        740
Swap:         2055        927       1127
[krienke bliss:~] 619 > free -m
8                    total       used       free     shared    buffers     cached
Mem:          1012        507        504          0          1        246
-/+ buffers/cache:        259        752
Swap:         2055       1117        937
[krienke bliss:~] 619 > free -m
 9                   total       used       free     shared    buffers     cached
Mem:          1012        590        422          0          1        335
-/+ buffers/cache:        252        759
Swap:         2055       1229        825
[krienke bliss:~] 619 > free -m
10                    total       used       free     shared    buffers     cached
Mem:          1012        557        454          0          2        270
-/+ buffers/cache:        285        726
Swap:         2055       1485        569
[krienke bliss:~] 619 >  


Next I terminated my KDE session and kdm as well and restarted it and logged in again.
The swap space was still used. This should not happen as I think.  
Am I the only one having this behaviour?

Thanks
Rainer
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Re: [Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
In reply to this post by Gilles Caulier
Am Montag, 24. Juli 2006 11:50 schrieb Gilles Caulier:

> ------- You are receiving this mail because: -------
> You are the assignee for the bug, or are watching the assignee.
>
> http://bugs.kde.org/show_bug.cgi?id=131277
>
>
>
>
> ------- Additional Comments From caulier.gilles free fr  2006-07-24 11:50
> ------- I'm use also Suse 10.1 here without memory leak and swap.
>
> Note I recommend you to use Exiv2 10.1...
Ok I'll try this. What KDE version do you use?  I have:

[krienke@bliss:~] 631 > rpm -qv kdebase3 qt
kdebase3-3.5.3-21.2
qt-4.1.0-29

The RPMS are from SuSEs Build service. Perhaps these non default packages are
the problem?

Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 13:41 -------
Am Montag, 24. Juli 2006 11:50 schrieb Gilles Caulier:
[bugs.kde.org quoted mail]

Ok I'll try this. What KDE version do you use?  I have:

[krienke bliss:~] 631 > rpm -qv kdebase3 qt
kdebase3-3.5.3-21.2
qt-4.1.0-29

The RPMS are from SuSEs Build service. Perhaps these non default packages are
the problem?

Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 13:46 -------
on my suse 10.1, i has kdebase3-3.5.1-69.15 installed. Qt 4.1 is not installed.

Gilles
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 13:49 -------
Note : a good test under editor to try to reproduce the memory leak is to open the first image of an album where there is a lot of pictures (here 350 JPEG + PNG + RAW files), and toggle on the slideshow tool in loop with a pause of 3s.

Here, I have to lets slideshow running during this morning without problem...

Gilles
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 14:48 -------
Am Montag, 24. Juli 2006 13:49 schrieb Gilles Caulier:
[bugs.kde.org quoted mail]

Just tried the slide show feature in the image editor. In this case nothing
happened. Swap remained as it was.

Next I stopped the slide show and manually went through the same photos
(pressing Pages down as fast as the photos are loaded) using the same photos
and the same number as for the slide show. The effect was there again.

As strange as it is, but for me I can reproduce this effect only by manually
pressing the page down key in the image editor *very fast* as fast as your
system can load and display the photos in the image editor. This immedeately
reproduces this effect for me.

Could you give this "method" a try and see if you can reproduce this effect?
For me 50 photos each 6Mpix was enough to see the effect.

Thanks
Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 15:15 -------
Witch photo format you use to test ? JPEG, RAW, PNG, TIFF ?

Gilles
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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------- Additional Comments From caulier.gilles free fr  2006-07-24 15:22 -------
No, i cannot reproduce this problem using PAGE_UP and PAGE_DOWN keys. My folder to test has 36 JPEG file 3Mpx and my computer has 700Mb.

In Editor, witch sidebar tab on the right is toogle on ?

Gilles
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[Digikam-devel] [Bug 131277] Memory leak in image editor

krienke
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------- Additional Comments From krienke uni-koblenz de  2006-07-24 15:30 -------
Am Montag, 24. Juli 2006 15:15 schrieb Gilles Caulier:
[bugs.kde.org quoted mail]

Only jpegs taken with a Nikon D70.

> No, i cannot reproduce this problem using PAGE_UP and PAGE_DOWN keys. My
> folder to test has 36 JPEG file 3Mpx and my computer has 700Mb.
> In Editor, witch sidebar tab on the right is toogle on ?


None of the tabs is open because initially I just wanted to look at the
photos.

Rainer
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[Digikam-devel] [Bug 131277] Memory leak in image editor

Gilles Caulier
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caulier.gilles free fr changed:

           What    |Removed                     |Added
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         AssignedTo|digikam-devel kde org       |marcel.wiesweg gmx de



------- Additional Comments From caulier.gilles free fr  2006-07-24 15:34 -------
idem here. tested without sidebar tab toggled. Very strange...

Marcel, can you reproduce this problem on your computer ?

Gilles
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