Re: [Xen-users] netback performance

[Steven Timm <timm@xxxxxxxx>]

I have seen Xen do more than 1.5GBit/s on vm-to-vm performance
within the same hypervisor.  Never tried it on a machine with
10Gbit/s hardware.  KVM is certainly capable of 10Gbit/s  wire speed
with virtio and we do it regularly, no reason I know of why Xen also
couldn't do it.

Steve



On Wed, 23 Jul 2014, Kristoffer Egefelt wrote:

> Hi,
>
> Until now I was under the impression that a VM could not move more than 
> ~200.000pps or ~1.5Gbit on mtu 1500 on one VIF - in XENs case due to the 
> netback process being single threaded.
>
> But here they apparently get line-rate 10G on a single vif one-core VM 
> (+800.000pps), using standard KVM and virtio (this is not documented in the 
> post, I asked them).
>
> http://opencontrail.org/evaluating-opencontrail-virtual-router-performance/
>
> This seems almost unreal to me - but maybe I’m missing something.
>
> Is Xen currently able to do this ?
>
>
> Thanks
> Kristoffer
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> http://lists.xen.org/xen-users
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Scientific Computing Division, Scientific Computing Services Quad.
Grid and Cloud Services Dept., Associate Dept. Head for Cloud Computing

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