12/12/2017 13:58, ..: > I assume my message was ignored due to it not being related to dpdk > software?
It is ignored because people have not read it or are not expert in this hardware. I am CC'ing the maintainer of igb/e1000. > On 11 December 2017 at 10:14, .. <[email protected]> wrote: > > > Hi, > > > > I have an intel I350-T2 which I use for SR-IOV, however, I am hitting some > > rx_dropped on the card when I start increasing traffic. (I have got more > > with the same software out of a identical bare metal system) > > > > I am using the Intel igb driver on Centos 7.2 (downloaded from Intel not > > the driver installed with Centos), so the RSS parameters amongst others are > > availbe to me > > > > This then led me to investigate the interrupts on the tx rx ring buffers > > and I noticed that the interface (vfs enabled) only had on tx/rx queue. Its > > distributed between This is on the KVM Host > > > > CPU0 CPU1 CPU2 CPU3 CPU4 > > CPU5 CPU6 CPU7 CPU8 > > 100: 1 33 137 0 0 > > 0 0 0 0 IR-PCI-MSI-edge ens2f1 > > 101: 2224 0 0 6309 178807 > > 0 0 0 0 IR-PCI-MSI-edge ens2f1-TxRx-0 > > > > Looking at my standard nic ethernet ports I see 1 rx and 4 rx queues > > > > On the VM I only get one tx one rx queue ( I know all the interrupts are > > only using CPU0) but that is defined in our builds. > > > > egrep "CPU|ens11" /proc/interrupts > > CPU0 CPU1 CPU2 CPU3 CPU4 > > CPU5 CPU6 CPU7 > > 34: 715885552 0 0 0 0 > > 0 0 0 0 PCI-MSI-edge ens11-tx-0 > > 35: 559402399 0 0 0 0 > > 0 0 0 0 PCI-MSI-edge ens11-rx-0 > > > > I activated RSS in my card, and can set if, however if I use the param > > max_vfs=n then it defaults back to to 1 rx 1 tx queue per nic port > > > > [ 392.833410] igb 0000:07:00.0: Using MSI-X interrupts. 1 rx queue(s), 1 > > tx queue(s) > > [ 393.035408] igb 0000:07:00.1: Using MSI-X interrupts. 1 rx queue(s), 1 > > tx queue(s) > > > > I have been reading some of the dpdk older posts and see that VF RSS is > > implemented in some cards, does anybody know if its available in this card > > (from reading it only seemed the 10GB cards) > > > > One of my plans aside from trying to create more RSS per VM is to add more > > CPUS to the VM that are not isolated so that the rx and tx queues can > > distribute their load a bit to see if this helps. > > > > Also is it worth investigating the VMDq options, however I understand this > > to be less useful than SR-IOV which works well for me with KVM. > > > > > > Thanks in advance, > > > > Rolando > > >
