Re: [PATCH V2] x86/tboot: add an option to disable iommu force on

[Joerg Roedel]

On Thu, Apr 27, 2017 at 08:41:20AM -0700, Shaohua Li wrote:
> Sorry, I wrote the wrong data. With iommu the pps is 6M pps, and without it, we
> can get around 20M pps. XDP is much faster than normal network workloads. The
> test uses 64 bytes. We tried other sizes in the machine (not 8 bytes though),
> but pps doesn't change significantly. With different package size, the peek pps
> is around 7M with iommu, then the NIC starts to drop package. CPU util is very
> low as I said before. Without iommu, the peek pps is around 22M.

Ah, these numbers makes more sense.

Thanks,

	Joerg