> These patches are to enable DPDK 1.8 only. What 'bulk processing' are you > referring to? > By default there is a batch size of 192 in netdev-dpdk for rx from the NIC - > the linked > patch doesn't change this, just the DPDK version.
Sorry, I referred the wrong part there: bulk transmission, which is clearly not involved in my case. The idea was that the conditionally enabling prefetch for rx queues (BULK_ALLOC) may help somehow, but it`s probably will mask issue instead of solving it directly. By my understanding, strict drop rule should have a zero impact on a main ovs thread (and this is true) and work just fine with a line rate (this is not). > > Main things to consider are to isocpu's, pin the pmd thread and keep > everything > on 1 NUMA socket. At 11 mpps without packet loss on that processor I suspect > you are > doing those things already. Yes, with all tuning improvements I was able to do this, but bare Linux stack on same machine is able to handle 12Mpps and there are absolutely no hints of what exactly is being congested.
