[Bug 254036] New: digikam.org logo animation causes high CPU load in X server

https://bugs.kde.org/show_bug.cgi?id=254036

           Summary: digikam.org logo animation causes high CPU load in X
                    server
           Product: digikam
           Version: 1.5.0
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           1.5.0 (using KDE 4.5.2)
OS:                Linux

As long as the digikam.org logo in the upper right edge is animated, e.g. in
the batch queue manager while it is running, digikam seems to put a high CPU
load on the X server.

The two lines from top:

10329 fietze    20   0 1801m 786m  57m 1.0g S  101 10.2  16:51.72
/usr/bin/digikam -caption digiKam -icon digikam                                

 6646 root      20   0  621m 486m  43m 134m S   73  6.3 115:18.94 /usr/bin/Xorg
-br :0 vt7 -nolisten tcp -auth /var/lib/xdm/authdir/authfiles/A:0-M2sQlb        

As soon as the batch queue manager window is minizmized the Xorg load goes
almost away (below 5%), while the high digikam CPU load stays (of course, the
queue is still active and running).

Could be a similar problem as with the knotify button animation, which did
almost the same thing while e.g. download jubs where active.

This is on an openSUSE 11.2 x86_64 with a dual core AMD Athlon 6400+. Maybe the
used grafics card and driver is one factor: embedded ATI Readeon 3xxx inside an
AMD 780G chipset, newest ATI driver catalyst V10.9.


Reproducible: Always

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[Gilles Caulier-4]

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--- Comment #1 from Gilles Caulier <caulier gilles gmail com>  2010-10-13 09:17:31 ---
Not reproducible here. ATI card under mandriva, AMD drivers installed. Sound
like a problem with your linux install

Gilles Caulier

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[Marcel Wiesweg]

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--- Comment #2 from Marcel Wiesweg <marcel wiesweg gmx de>  2010-10-13 09:54:48 ---
Roman, see it this way: This animation is a tiny part of the screen redrawn
like 25x per second. Could it be regarded a bug of the application to do that?
Not really. Can we expect a desktop system of the year 2010 to handle this?
Yes, this demand is ridiculously far below the capabilities of your hardware.
The Linux graphics stack is progressing, but is still in a pitiful state in
some areas. (and we cannot blame the hardware vendors, the ATI specs are
available)

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--- Comment #3 from Roman Fietze <rfkd fietze-home de>  2010-10-13 10:00:56 ---
(In reply to comment #2)

> Could it be regarded a bug of the application to do that?

Or the underlying toolkit. Most probably. Allthough I shouldn't kill the
messenger, currently digikam together with knotify are teh only applications
showing such a behaviour.

See bug #251328.

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--- Comment #4 from Roman Fietze <rfkd fietze-home de>  2010-10-13 18:24:00 ---
Could reproduce that on a second system, this time my home box. This is also an
openSUSE 11.2 x86_64, but with an AMD 785 chipset containing a Radeon 4xxx and
a quad core Phenom 905e. This xorg load is about 30% as long as the BQM window
is not minimized.

I assume a problem upstream, propably the KDE libs or even the ATI driver.
Maybe I can test that again using a non ATI box tomorrow.

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[Martin Klapetek]

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--- Comment #5 from Martin Klapetek <martin klapetek gmail com>  2010-10-13 18:37:26 ---
Interesting, I can reproduce it as well. I'm on Fedora 13 x86_64 and I have ATI
Radeon HD 3200 integrated GPU (RS780M/RS780MN) with Catalyst fglrx 10.9 and the
X usage goes indeed high when the window is on top and goes back down when
minimalized. Not sure if it is the logo, but something in BQM does make the X
use more CPU.

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