[dpdk-users] i40e XL710 VF low latency reception and interrupt throttling

Heiko.Haase at rohde-schwarz.com Heiko.Haase at rohde-schwarz.com
Wed Nov 22 12:34:52 CET 2017


I am trying to receive packets as fast as possible with DPDK PMD. 
Sometimes packets arrive within a few microseconds , which is fine, 
sometimes packets arrive only after approx. 8 milliseconds. This seems to 
be due to interrupt throttling configured in the VF driver. Does anyone 
know a way to configure the interrupt throttling or how to turn it off. 

My setup: Intel XL710 NIC, i40e pmd driver, DPDK uses VF, PF is mapped to 
Linux kernel. DPDK 17.11


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