Hello, My hardware is a Dell PowerEdge R820: 4x Intel Xeon E5-4620 2.20GHz 8 core 16GB RDIMM 1333 MHz Dual Rank, x4 - Quantity 16 Intel X520 DP 10Gb DA/SFP+
So in summary 32 cores @ 2.20GHz and 256GB RAM ... plenty of horsepower. I've reserved 16 1GB Hugepages I am configuring only one interface and using testpmd in rx_only mode to first see if I can receive at line rate. I am generating traffic on a different system which is running the netmap pkt-gen program - generating 64 byte packets at close to line rate. I am only able to receive approx. 75% of line rate and I see the Rx-errors in the port stats going up proportionally. I have verified that all receive queues are being used, but strangely enough, it doesn't matter how many queues more than 2 that I use, the throughput is the same. I have verified with 'mpstat -P ALL' that all specified cores are used. The utilization of each core is only roughly 25%. Here is my command line: testpmd -c 0xffffffff -n 4 -- --nb-ports=1 --coremask=0xfffffffe --nb-cores=8 --rxd=2048 --txd=2048 --mbcache=512 --burst=512 --rxq=8 --txq=8 --interactive What can I do to trace down this problem? It seems very similar to a thread on this list back in May titled "Best example for showing throughput?" where no resolution was ever mentioned in the thread. Thanks for any help. - Michael