I haven't used exclusive pinning on 4.5.0, but my CPU on my host for qemu never goes below 90% on the main PID, even when the my Win 10 guest is 100% idle. That might not be in the spirit of this thread, though.
On Sun, Apr 3, 2016 at 7:52 PM, Brandon Ganem <[email protected]> wrote: > Anyone try 4.5 to see if it resolves this issue? > > On Tue, Mar 22, 2016 at 10:52 PM, Brandon Ganem <[email protected]> > wrote: > >> 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 >>> >>> >> > > _______________________________________________ > vfio-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/vfio-users > >
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