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On 01/22/2015 03:19 AM, Piotr Korthals wrote:
> Thanks, Rick looks like GRO was something we was missing in our setup.
>
> Here are some results form my tests
>
> iperf with GRO disabled on server side : 2,5-3Gbps
> iperf with GRO enabled on server side :  3,5-4 Gbps (gro was enabled on
> eth0, br-eth0, br-storage)
>
> Additionally i used OVS VLAN splinters option "Enable OVS VLAN splinters
> hard trunks workaround" of fuel deployment
>
> iperf with GRO disabled using hw VLAN splinters and MTU 1,5k : ~5 Gbps
> iperf with GRO disabled using hw VLAN splinters and MTU 9k    : 9-10 Gbps
> iperf with GRO enabled using hw VLAN splinters and MTU 1,5k  : 9-10 Gbps
>
> Then i tested iperf between machines of 2 different configurations (with
> OVS VLAN splinters, and without it),
>
> default->OVS_VLAN_spliters (GRO disabled) : 2,5 Gbps
> default->OVS_VLAN_spliters (GRO enabled) : 5 Gbps
>
> OVS_VLAN_spliters->default (GRO disabled) : 2,5-3 Gbps
> OVS_VLAN_spliters->default (GRO enabled) : 5-10 Gbps
>
> This looks like OVS is not performing good enough in this setup for
> tagged vlans (our br-storage is running on tagged vlan)
>
> any commands?

None that come to mind at present, sorry.

rick