Hi all, I m facing one issue in which packets are continuously dropped at vhost level in same numa configuration. *PMD Thread Core Affinity* pmd thread numa_id 1 core_id 17: isolated : false port: dpdk0 queue-id: 0 port: vhu43378b38-cb queue-id: 0 port: vhu8d094814-25 queue-id: 0 *Case I: When receiver application on VM is using numa_id 0 and pmd_thread is using numa_id 1* Packet is going from vhost to VM via QPI Intel(r) QPI traffic estimation in bytes (data and non-data traffic outgoing from CPU/socket through QPI links): QPI0 QPI1 --------------------------------------------------------------------------------------------------------------- SKT 0 3% 4% SKT 1 3% 3% In this case, no packet is dropped at vhost level. *Case II: When my receiver application is using numa_id 1 and pmd_thread is using numa_id 1* QPI monitoring Intel(r) QPI traffic estimation in bytes (data and non-data traffic outgoing from CPU/socket through QPI links): QPI0 QPI1 --------------------------------------------------------------------------------------------------------------- SKT 0 0% 0% SKT 1 0% 0% In this case, I m facing continuous packet drop at vhost level. Following things that I tried, but none of them worked 1. RX descriptors values (512, 1024, 2048, 4096) 2. MBUF_CACHE_SIZE values (128, 512) Please suggest where I m doing wrong? Maybe I've missed something and compute node is missing some configuration that is causing this issue. Regards Dheeraj Dang