openvswitch+dpdk 100% cpu usage of ovs-vswitchd

Satish Patel satish.txt at
Sun Nov 8 16:13:44 UTC 2020

 Thanks. Just curious then why people directly go for SR-IOV
implementation where they get better performance + they can use the
same CPU more also. What are the measure advantages or features
attracting the community to go with DPDK over SR-IOV?

On Sun, Nov 8, 2020 at 10:50 AM Laurent Dumont <laurentfdumont at> wrote:
> As far as I know, DPDK enabled cores will show 100% usage at all times.
> On Sun, Nov 8, 2020 at 9:39 AM Satish Patel <satish.txt at> wrote:
>> Folks,
>> Recently i have added come compute nodes in cloud supporting
>> openvswitch-dpdk for performance. I am seeing all my PMD cpu cores are
>> 100% cpu usage on linux top command. It is normal behavior from first
>> looks. It's very scary to see 400% cpu usage on top. Can someone
>> confirm before I assume it's normal and what we can do to reduce it if
>> it's too high?

More information about the openstack-discuss mailing list