[vfio-users] posted interrupts

[P. Pronk]

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?
>
>
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