Hi,
While doing performance testing with larger packet size (like 4000 bytes), we are seeing rx_missed_errors on the interface. This issue is not seen with packet size less than 2000. There were questions asked in this forum on rx_missed_error, but there was not any conclusion. Please let me know what could be the reason for these drops. I tried the following without any luck: 1) Tried different burst size like 16, 32 an 64 2) Tried different number of the rx descriptors like 512, 1024, 2048 and 4096. Setup and testing details: CPU Speed : 2.6 GHz NIC : 82599ES 10-Gigabit IO Virtualization: SR-IOV IO and packet processing cores are in the same NUMA. Packet size : 4000 bytes Traffic rate: 80 % line rate. If the traffic rate is < ~80% then drops are not seen. Application: This is a sample application developed using L3fwd example app. DPDK version: 1.7 Thanks, Swamy
