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Hi Jian,

thank you for your reply. I'm using SR-IOV, so I don't use Virtio for
network, however I've tried to use configure RPS still doesn't seem to work:


​
Any hint?

Regards,
Pedro Sousa


On Sat, Oct 10, 2015 at 6:47 AM, Jian Wen <wenjianhn at gmail.com> wrote:

> You can try either of the following methods to distributes the load of
> processing received
> packets and spreads them across multiple CPUs.
>
> Receive Packet Steering:
> Optimizing EC2 Network Throughput On Multi-Core Servers
> <https://engineering.pinterest.com/blog/building-pinterest-cloud>
>
> Multi-Queue virtio-net:
>
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Tuning_and_Optimization_Guide/sect-Virtualization_Tuning_Optimization_Guide-Networking-Techniques.html
>
> On Tue, Sep 29, 2015 at 5:49 AM, Pedro Sousa <pgsousa at gmail.com> wrote:
>
>> Hi all,
>>
>> I'm trying to deploy some nfv apps on my Openstack deployment, however
>> I'm having some performance issues in my VMs, that start to lose UDP
>> packets at a specific packet transmission rate.
>>
>>  Here's what I've tried and found so far:
>>
>> - VMs Centos 7.1 with 10GBe Neutron SR-IOV nics
>> - Configured Memory Hugepages:
>> http://redhatstackblog.redhat.com/tag/huge-pages/
>> - Configured CPU Pinning and NUMA Topology:
>> - Increased memory network buffers in kernel
>> - Running "egrep ens6 /proc/interrupts" I see network Interrupts are not
>> balanced evenly inside my guest across CPU cores, always hitting the same
>> CPU.
>>
>> Concerning this last issue does anybody have some good advices on how to
>> tackle this, how can I share the network load across the vcpus inside the
>> guest or am I looking in the wrong direction?
>>
>> Some pointers would be appreciated.
>>
>> Regards,
>> Pedro Sousa
>>
>>
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>>
>
>
> --
> Best,
>
> Jian
>
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