Re: [gentoo-user] qt-creator (and others) too slow

[Ian Bloss]

Are you running any special kernel configuration like the CK patches?

On Thu, Jul 21, 2016 at 2:42 PM Alec Ten Harmsel 
wrote:

> On Thu, Jul 21, 2016 at 10:40:18AM -0300, Francisco Ares wrote:
> > Thanks Alec.
> >
> > No unstable KDE nor Qt.
> >
> > From the output of "equery l kde-plasma/plasma*"
> >
> > [IP-] [  ] kde-plasma/plasma-desktop-5.5.5-r1:5
> > [IP-] [  ] kde-plasma/plasma-mediacenter-5.5.5:5
> > [IP-] [  ] kde-plasma/plasma-meta-5.5.5:5
> > [IP-] [  ] kde-plasma/plasma-nm-5.5.5:5
> > [IP-] [  ] kde-plasma/plasma-pa-5.5.5:5
> > [IP-] [  ] kde-plasma/plasma-workspace-5.5.5-r2:5
> > [IP-] [  ] kde-plasma/plasma-workspace-wallpapers-5.5.5:5
>
> I have the same versions of plasma, except that I only installed
> plasma-desktop and its dependencies. I don't have kmail, kate, or any of
> the rest of the KDE applications except konsole.
>
> > ... and from the output of "equery l dev-qt/qtcore"
> >
> > [IP-] [  ] dev-qt/qtcore-4.8.6-r2:4
> > [IP-] [  ] dev-qt/qtcore-5.5.1-r1:5
>
> I do not have any Qt 4 installed.
>
> > From /etc/portage/package.use :
> >
> > dev-qt/qt-creator   -android -cmake -doc subversion valgrind
> > -debug python -webkit
> > dev-qt/qtcore   icu -debug
> > dev-qt/qtgui-debug
> >
>
> Hmm, okay. I have noticed some slowness when baloo is running, as
> Fernando mentioned. I turned off file indexing, which does not seem to
> have actually done anything.
>
> Anyways, other than that, KDE for me runs very smoothly. Most of the
> time, even when baloo is running full out, KDE itself is very
> responsive. Qt Creator currently segfaults when I try to create a new
> project or open a project, but other than that is generally responsive.
>
> Which version of Qt Creator are you running?
>
> Alec
>
>

Re: [gentoo-user] qt-creator (and others) too slow

[Alec Ten Harmsel]

On Thu, Jul 21, 2016 at 10:40:18AM -0300, Francisco Ares wrote:
> Thanks Alec.
> 
> No unstable KDE nor Qt.
> 
> From the output of "equery l kde-plasma/plasma*"
> 
> [IP-] [  ] kde-plasma/plasma-desktop-5.5.5-r1:5
> [IP-] [  ] kde-plasma/plasma-mediacenter-5.5.5:5
> [IP-] [  ] kde-plasma/plasma-meta-5.5.5:5
> [IP-] [  ] kde-plasma/plasma-nm-5.5.5:5
> [IP-] [  ] kde-plasma/plasma-pa-5.5.5:5
> [IP-] [  ] kde-plasma/plasma-workspace-5.5.5-r2:5
> [IP-] [  ] kde-plasma/plasma-workspace-wallpapers-5.5.5:5

I have the same versions of plasma, except that I only installed
plasma-desktop and its dependencies. I don't have kmail, kate, or any of
the rest of the KDE applications except konsole.

> ... and from the output of "equery l dev-qt/qtcore"
> 
> [IP-] [  ] dev-qt/qtcore-4.8.6-r2:4
> [IP-] [  ] dev-qt/qtcore-5.5.1-r1:5

I do not have any Qt 4 installed.

> From /etc/portage/package.use :
> 
> dev-qt/qt-creator   -android -cmake -doc subversion valgrind
> -debug python -webkit
> dev-qt/qtcore   icu -debug
> dev-qt/qtgui-debug
> 

Hmm, okay. I have noticed some slowness when baloo is running, as
Fernando mentioned. I turned off file indexing, which does not seem to
have actually done anything.

Anyways, other than that, KDE for me runs very smoothly. Most of the
time, even when baloo is running full out, KDE itself is very
responsive. Qt Creator currently segfaults when I try to create a new
project or open a project, but other than that is generally responsive.

Which version of Qt Creator are you running?

Alec

Re: [gentoo-user] qt-creator (and others) too slow

[Francisco Ares]

Thanks Alec.

No unstable KDE nor Qt.

>From the output of "equery l kde-plasma/plasma*"

[IP-] [  ] kde-plasma/plasma-desktop-5.5.5-r1:5
[IP-] [  ] kde-plasma/plasma-mediacenter-5.5.5:5
[IP-] [  ] kde-plasma/plasma-meta-5.5.5:5
[IP-] [  ] kde-plasma/plasma-nm-5.5.5:5
[IP-] [  ] kde-plasma/plasma-pa-5.5.5:5
[IP-] [  ] kde-plasma/plasma-workspace-5.5.5-r2:5
[IP-] [  ] kde-plasma/plasma-workspace-wallpapers-5.5.5:5

... and from the output of "equery l dev-qt/qtcore"

[IP-] [  ] dev-qt/qtcore-4.8.6-r2:4
[IP-] [  ] dev-qt/qtcore-5.5.1-r1:5

>From /etc/portage/package.use :

dev-qt/qt-creator   -android -cmake -doc subversion valgrind
-debug python -webkit
dev-qt/qtcore   icu -debug
dev-qt/qtgui-debug

Best Regards,
Francisco


2016-07-20 16:31 GMT-03:00 Alec Ten Harmsel :

> On Wed, Jul 20, 2016 at 03:59:27PM -0300, Francisco Ares wrote:
> > Hi, all,
> >
> > Just upgraded to KDE 5, Qt 5 (as full as possible) and now QtCreator
> > frequently uses almost full CPU, a quad-core i5-4430. Any change on the
> > IDE, even just passing the mouse cursor over elements of an opened source
> > code file, makes the CPU consuption to the high tops.
>
> Which versions of Qt/KDE? I just installed stable KDE 5 on unstable Qt
> 5, as tiling window managers are not great all the time. I have not
> noticed any problems so far related to rendering.
>
> I can test this in a little while, but I'm busy working on some stuff
> right now while logged in to i3.
>
> Alec
>
>

Re: [gentoo-user] qt-creator (and others) too slow

[Fernando Rodriguez]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

On 07/20/2016 02:59 PM, Francisco Ares wrote:
> Hi, all,
> 
> Just upgraded to KDE 5, Qt 5 (as full as possible) and now QtCreator
> frequently uses almost full CPU, a quad-core i5-4430. Any change on the
> IDE, even just passing the mouse cursor over elements of an opened source
> code file, makes the CPU consuption to the high tops.
> 
> It also happened when I tried some widgets using plasmashell, like the
> analog clock and the Desktop widget. The process "plasmashell" eat uup all
> available CPU cicles.
> 
> Could it be something related to more deep details inside Qt basis?
> 
> Turns out to find funny QtCreator's description on KDE menu: "Lightweight
> IDE for C++ ...".
> 
> Any hints to find out what is happening will be highly appreciated.
> 
> Best regards,
> Francisco
> 

Are you sure it's QtCreator, etc and not the baloo indexer that's causing
problems. After upgrading baloo yesterday it slowed down my laptop all
day today. It just stopped. Baloo itself wasn't eating much CPU but it was
doing a lot of IO (use iotop to check).

- -- 

Fernando Rodriguez
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Re: [gentoo-user] qt-creator (and others) too slow

[Alec Ten Harmsel]

On Wed, Jul 20, 2016 at 03:59:27PM -0300, Francisco Ares wrote:
> Hi, all,
> 
> Just upgraded to KDE 5, Qt 5 (as full as possible) and now QtCreator
> frequently uses almost full CPU, a quad-core i5-4430. Any change on the
> IDE, even just passing the mouse cursor over elements of an opened source
> code file, makes the CPU consuption to the high tops.

Which versions of Qt/KDE? I just installed stable KDE 5 on unstable Qt
5, as tiling window managers are not great all the time. I have not
noticed any problems so far related to rendering.

I can test this in a little while, but I'm busy working on some stuff
right now while logged in to i3.

Alec