I saw it online somewhere, but forgot the kernel parameter... I'll try to find it, and anything else you might need to know.
On Thu, Apr 6, 2017 at 5:00 PM, P. Pronk <v...@pronk.nl> wrote: > > not sure which kernel parameter or libvirt option that would be either > unfortunately. > > If you or someone else can point to some clear directions I am still happy > to help. > > On 06/04/17 20:06, Joshua Lee wrote: > > If you get that running, run FIrestrike both "before and after" using > posted interrupts for me... and show what scores you get, maybe some other > benchmark like one of the ones from Unigine if you have the time. > > On Thu, Apr 6, 2017 at 1:00 PM, Joshua Lee <joshua...@gmail.com> wrote: > >> I'm not sure, I know there's a kernel command line argument that >> activates support for it, then there might be something also within your >> libvirt XML and QEMU command-line? >> >> On Thu, Apr 6, 2017 at 8:00 AM, P. Pronk <v...@pronk.nl> wrote: >> >>> >>> With regards to your first question, I am using an E5-1620v4 with X99 >>> chipset but I am not sure how I can check for you if the 16xx supports >>> this. Let me know if you would like me to check something specifically. >>> >>> Kind regards, Pim >>> >>> On 06/04/17 13:18, Joshua Lee wrote: >>> >>> I'm not clear if posted interrupts, a feature of Broadwell-EP, is >>> available on both E5 1xxx V4 and E5 2xxx V4, or just E5 2xxx V4? Intel's >>> marketing literature seems to stress the latter family of processors as >>> having it, but reviews on sources such as Anandtech do not mention anything >>> but Broadwell-EP E5 Xeons having it in general. >>> >>> Also, a second question, what amount of performance increase in GPU >>> performance could one expect for a KVM/QEMU virtual machine with PCIE VGA >>> passthrough using the posted interrupt feature of Broadwell-EP Xeons, using >>> say a 1620 V4, 1630 V4, or 1650 V4, assuming those have the feature (if >>> not, insert a frequency-optimized E5 2xxx instead) versus say a i7-5820k? >>> >>> >>> _______________________________________________ >>> vfio-users mailing >>> listvfio-users@redhat.comhttps://www.redhat.com/mailman/listinfo/vfio-users >>> >>> _______________________________________________ vfio-users mailing list >>> vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users >> >>
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
