Den 18 maj 2016 7:48 em skrev Nicolás <[email protected]>: > > > > El 18/05/16 a las 18:11, Karli Sjöberg escribió: >> >> >> Den 18 maj 2016 7:03 em skrev Nicolás <[email protected]>: >> > >> > Hi Karli, >> > >> > El 18/05/16 a las 16:59, Karli Sjöberg escribió: >> >> >> >> >> >> Den 18 maj 2016 5:49 em skrev Nicolás <[email protected]>: >> >> > >> >> > 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. >> >> 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).
And it doesn't happen with a similar VM in the other datacenter, on the same hardware? /K > >> > >> >> > 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 >> >> > [email protected] >> >> > http://lists.ovirt.org/mailman/listinfo/users >> > >> > > >
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