On Sun, 2020-11-08 at 09:31 -0500, Satish Patel 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. yes this is perfectly normal and how dpdk is intended to work PMD stands for pool mode driver. the dpdk driver is runing in a busy loop polling the nic for new packets to process so form a linux perspective the core wil be used 100%. dpdk has its own stats for pmd useage that tell you the actul capasity but thre is nothing to be alarmed by.
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?