Hi, I have an application built with dpdk 17.11. During initialization I want to change the mbuf size from 2K to 16K. I want to receive packet sizes of 8K or more in one mbuf.
The VM running the application is configured to have 2G hugepages. I tried many things and I get an error when a packet arrives. I read online that there is #define DEFAULT_MBUF_DATA_SIZE that I changed from 2176 to ((2048*8)+128), where 128 is for headroom. The call to rte_pktmbuf_pool_create() returns success with my changes. >From the rte_mempool_dump() - "rx_nombuf" - Total number of Rx mbuf allocation >failures. This value increments each time a packet arrives. Is there any reference document explaining what causes this error? Is there a user guide I should follow to make the mbuf size change, starting with the hugepage value? Thanks, Ed
