From nicolas at devels.es Wed May 18 13:03:02 2016 Content-Type: multipart/mixed; boundary="===============4164356772121333175==" MIME-Version: 1.0 From: =?utf-8?q?Nicol=C3=A1s_=3Cnicolas_at_devels=2Ees=3E?= To: users at ovirt.org Subject: Re: [ovirt-users] 100% memory usage on desktop environments Date: Wed, 18 May 2016 18:06:11 +0100 Message-ID: <573CA103.8060105@devels.es> In-Reply-To: 848ff670f8084d3e8c04b813ead04977@exch2-4.slu.se --===============4164356772121333175== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format. --------------040505060606050103040606 Content-Type: text/plain; charset=3Dutf-8; format=3Dflowed Content-Transfer-Encoding: 8bit Hi Karli, El 18/05/16 a las 16:59, Karli Sj=C3=B6berg escribi=C3=B3: > > > Den 18 maj 2016 5:49 em skrev Nicol=C3=A1s : > > > > Hi, > > > > Probably not an oVirt issue, but maybe someone can help. I've = > deployed a > > pretty basic VM (ubuntu 14.04 server, 4GB RAM, 4 CPUs, 15GB storage). > > Just spitballing here: 14.04 only? Tried 16.04, or any other OS for = > that matter? For now, it sounds more guest related rather than oVirt. > > /K > I tried a vanilla centos-7.1 as well and the same happens. I'm of the = same opinion that this is more a guest related issue, it's just I'd like = to find out why this only happens with QXL and not with CIRRUS. Thanks. > > Each time I install an additional desktop environment (Gnome, KDE, > > whatever...), CPU usage rises to 100% all time to the extreme that > > interacting with the machine becomes impossible (maybe a mouse movement > > is propagated 3 minutes later or so...). > > > > To debug this, I installed LXDE, which is a lightweight desktop > > environment based on Xorg. I could see there is an Xorg process > > consuming one of the CPUs and the machine stops responding as far as = > the > > desktop environment goes. I have not changed anything in the > > configuration file. > > > > I could also see this only happens when QXL is chosen as the display > > driver. When CIRRUS is chosen, everything works smoothly and CPU is > > ~100% idle. The downside is that we want to use SPICE and CIRRUS won't > > allow it. > > > > Why does this happen? Is this an OS-side driver issue? Any hint how can > > it be fixed? > > > > Thanks. > > > > Nicol=C3=A1s > > _______________________________________________ > > Users mailing list > > Users(a)ovirt.org > > http://lists.ovirt.org/mailman/listinfo/users > --------------040505060606050103040606 Content-Type: text/html; charset=3Dutf-8 Content-Transfer-Encoding: 8bit Hi Karli,

El 18/05/16 a las 16:59, Karli Sj=C3=B6b= erg escribi=C3=B3:


Den 18 maj 2016 5:49 em skrev Nicol=C3=A1s <nicolas(a)devels.es><= /a>:
>
> Hi,
>
> Probably not an oVirt issue, but maybe someone can help. I've deployed a
> pretty basic VM (ubuntu 14.04 server, 4GB RAM, 4 CPUs, 15GB storage).

Just spitballing here: 14.04 only? Tried 16.04, or any other OS for that matter? For now, it sounds more guest related rather than oVirt.

/K


I tried a vanilla centos-7.1 as well and the same happens. I'm of the same opinion that this is more a guest related issue, it's just I'd like to find out why this only happens with QXL and not with CIRRUS.

Thanks.

> Each time I install an additional desktop environment (Gnome, KDE,
> whatever...), CPU usage rises to 100% all time to the extreme that
> interacting with the machine becomes impossible (maybe a mouse movement
> is propagated 3 minutes later or so...).
>
> To debug this, I installed LXDE, which is a lightweight desktop
> environment based on Xorg. I could see there is an Xorg process
> consuming one of the CPUs and the machine stops responding as far as the
> desktop environment goes. I have not changed anything in the
> configuration file.
>
> I could also see this only happens when QXL is chosen as the display
> driver. When CIRRUS is chosen, everything works smoothly and CPU is
> ~100% idle. The downside is that we want to use SPICE and CIRRUS won't
> allow it.
>
> Why does this happen? Is this an OS-side driver issue? Any hint how can
> it be fixed?
>
> Thanks.
>
> Nicol=C3=A1s
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users


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