This is a multi-part message in MIME format. --------------020802040705050604050109 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit El 18/05/16 a las 18:11, Karli Sjöberg escribió:
Den 18 maj 2016 7:03 em skrev Nicolás <nicolas@devels.es>:
Hi Karli,
El 18/05/16 a las 16:59, Karli Sjöberg escribió:
Den 18 maj 2016 5:49 em skrev Nicolás <nicolas@devels.es>:
Hi,
Probably not an oVirt issue, but maybe someone can help. I've
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
/K
I tried a vanilla centos-7.1 as well and the same happens. I'm of
deployed a that matter? For now, it sounds more guest related rather than oVirt. 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.
Very interesting. Are your hosts all of the same architecture(family)?
/K
Actually we have a nice mixture of manufacturers. We run 7 hosts, paired 4-2-1 in relation to architecture. All of them have the same resources, though (CPUs + RAM). In this case, I can't test the VM on different hosts because we've separated one of them (one of the "4") on a standalone oVirt datacenter as we're making tests on it, but I remember this has already happened to me in the past (I didn't have the time to debug it at that time, though).
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.
Nicolás _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--------------020802040705050604050109 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> <br> <br> <div class="moz-cite-prefix">El 18/05/16 a las 18:11, Karli Sjöberg escribió:<br> </div> <blockquote cite="mid:d37306c3c698445a8f4a6718ef2cc97e@exch2-4.slu.se" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <p dir="ltr"><br> Den 18 maj 2016 7:03 em skrev Nicolás <a class="moz-txt-link-rfc2396E" href="mailto:nicolas@devels.es"><nicolas@devels.es></a>:<br> ><br> > Hi Karli,<br> ><br> > El 18/05/16 a las 16:59, Karli Sjöberg escribió:<br> >><br> >><br> >> Den 18 maj 2016 5:49 em skrev Nicolás <a class="moz-txt-link-rfc2396E" href="mailto:nicolas@devels.es"><nicolas@devels.es></a>:<br> >> ><br> >> > Hi,<br> >> ><br> >> > Probably not an oVirt issue, but maybe someone can help. I've deployed a <br> >> > pretty basic VM (ubuntu 14.04 server, 4GB RAM, 4 CPUs, 15GB storage).<br> >><br> >> 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.<br> >><br> >> /K<br> ><br> ><br> > 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.<br> ><br> > Thanks.</p> <p dir="ltr">Very interesting. Are your hosts all of the same architecture(family)?</p> <p dir="ltr">/K</p> </blockquote> <br> Actually we have a nice mixture of manufacturers. We run 7 hosts, paired 4-2-1 in relation to architecture. All of them have the same resources, though (CPUs + RAM). In this case, I can't test the VM on different hosts because we've separated one of them (one of the "4") on a standalone oVirt datacenter as we're making tests on it, but I remember this has already happened to me in the past (I didn't have the time to debug it at that time, though).<br> <br> <blockquote cite="mid:d37306c3c698445a8f4a6718ef2cc97e@exch2-4.slu.se" type="cite"> <p dir="ltr">><br> >> > Each time I install an additional desktop environment (Gnome, KDE, <br> >> > whatever...), CPU usage rises to 100% all time to the extreme that <br> >> > interacting with the machine becomes impossible (maybe a mouse movement <br> >> > is propagated 3 minutes later or so...).<br> >> ><br> >> > To debug this, I installed LXDE, which is a lightweight desktop <br> >> > environment based on Xorg. I could see there is an Xorg process <br> >> > consuming one of the CPUs and the machine stops responding as far as the <br> >> > desktop environment goes. I have not changed anything in the <br> >> > configuration file.<br> >> ><br> >> > I could also see this only happens when QXL is chosen as the display <br> >> > driver. When CIRRUS is chosen, everything works smoothly and CPU is <br> >> > ~100% idle. The downside is that we want to use SPICE and CIRRUS won't <br> >> > allow it.<br> >> ><br> >> > Why does this happen? Is this an OS-side driver issue? Any hint how can <br> >> > it be fixed?<br> >> ><br> >> > Thanks.<br> >> ><br> >> > Nicolás<br> >> > _______________________________________________<br> >> > Users mailing list<br> >> > <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users@ovirt.org</a><br> >> > <a class="moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a><br> ><br> ><br> </p> </blockquote> <br> </body> </html> --------------020802040705050604050109--