[dpdk-users] Low throughput when pushing multiple priorities within a VLAN

[Alireza Sanaee]

Hi,

We have examined three NICs:

Ethernet controller: Mellanox Technologies MT27800 Family [ConnectX-5]
Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection

Our DPDK version is 20.05.0-rc0, Intel NIC works properly and doesn't 
show any throughput slow down, however, Mellanox NICs both show dramatic 
slow down for some reason.

Thanks,
Alireza

On 8/25/20 8:42 AM, Alireza Sanaee wrote:
>
> Hi,
>
> Here is my NIC,  Ethernet controller: Mellanox Technologies MT27710 
> Family [ConnectX-4 Lx]
>
> Thanks,
> Alireza
>
> On 8/25/20 3:17 AM, Erez Ferber wrote:
>> Hi,
>>
>> Which NIC are you using ?
>>
>> Thanks,
>> Erez
>>
>> On Mon, 24 Aug 2020 at 11:34 Alireza Sanaee <sarsanaee at gmail.com 
>> <mailto:sarsanaee at gmail.com>> wrote:
>>
>>     Dear all,
>>
>>
>>
>>     I'd like to push two flows with two different priorities from a
>>     NIC to
>>
>>     the network. If I use same priority for my flows, they'll be
>>     pushed at
>>
>>     the line rate. However, when I pick two different VLAN priorities,
>>
>>     throughput reduces drastically.
>>
>>
>>
>>     Is there anything wrong with my NIC configuration?
>>
>>
>>
>>     Thanks,
>>
>>     Alireza
>>
>>
>>