I see this on my end, ubuntu 16.04 beta. Also using CPU pinning. Sitting in windows 10 with a web browser is enough.
Linux 4.4.0-15-generic #31-Ubuntu SMP Fri Mar 18 19:08:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux qemu: https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu6 Thanks. On Tue, Mar 22, 2016 at 6:56 AM, Okky Hendriansyah <[email protected]> wrote: > On Tue, Mar 22, 2016 at 12:12 AM, Jon Panozzo <[email protected]> > wrote: > >> Can confirm 4.2.8 kernel doesn’t exhibit this behavior with the same QEMU >> package and VM guest. So taking the exact same software configuration to >> the 4.2.8 kernel results in normal CPU usage, but with any 4.4.x kernel >> variant I’ve tried thus far, I’ve seen the same 100% usage. >> >> It seems to apply when any media application is in use (3D, audio, or >> video). Just playing an MP3 for me caused the host to go to 100%. And if >> I leave shadowplay running, it stays at 100% as well. Any application that >> pulls on a VFIO passed-through device seems to cause this to occur for me. > > > Finally someone else beside me that experienced this kind of behavior. At > first I thought it was only on the demanding games. But when I also noticed > that also whenever I play music on my audio player the host CPU went 100% > on all cores. Although it didn't really affect the game performance, but > seeing the CPU load like that made me step back for the time being to > kernel 4.1.x > > Best regards, > Okky Hendriansyah > > > _______________________________________________ > vfio-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/vfio-users > >
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