2015-06-30 08:49, Gopakumar Choorakkot Edakkunni: > I am starting to tryout dpdk-2.0.0 with a simple Rx routine very > similar to the l2fwd example - I am running this on a c3.8xlarge aws > sr-iov enabled vpc instance (inside the vm it uses ixgbevf driver).
You mean you are using SR-IOV from Amazon, right? Do you have more hardware details? > Once in every 10 minutes my application crashes in the recieve path. > And whenever I check the crash reason its because it always has three > packets in the burst array (I have provided array size of 32) instead > of the four that it tries to collect in one bunch. And inside > desc_to_olflags_v(), theres the assumption that there are four > packets, and obviously it crashes trying to access the fourth buffer. Did you try to disable CONFIG_RTE_IXGBE_INC_VECTOR? > With a brief look at the code, I really cant make out how its > guaranteed that we will always have four descriptors fully populated ? > After the first iteration, the loop does break out if (likely(var != > RTE_IXGBE_DESCS_PER_LOOP)), but how about the very first iteration > where we might not have four ? > > Any thoughts will be helpful here, trying to get my app working for > more than 10 minutes :) Not needed. A DPDK application is fast enough to do the job in 10 minutes ;)
