Hi,I have configured OVS on a host with dpdk. I have created a net-dev type
bridge and assigned one physical port and one vhost user ports to it.Then, I
have created a VM using libvirt and assigned vhost user port to the VM. I am
running dpdk L2 Forward Application inside VM (using dpdk poll mode driver).
I have another machine which as has Packet-gen dpdk running on a host.
When I send Traffic from Virtual Machine to the VM through dpdk at rate
1Million packet per second(64byte packet), L2 forward in the VM just works fine
with zero drop rate. However, when I go beyond 1Million Packet per second from
packet gen, i see packet errors in OVS physical ports, and as a result any
additional packets above 1MPPS does not reach VM. Please do let me know why I
am facing this issue.
OVS OUTPUT:ovs-ofctl dump-ports br0OFPST_PORT reply (xid=0x2): 3 ports port
LOCAL: rx pkts=0, bytes=0, drop=0, errs=0, frame=0, over=0, crc=0 tx
pkts=292126777, bytes=17527676820, drop=0, errs=0, coll=0 port 1: rx
pkts=4917972248, bytes=333253670655, drop=0, errs=7153546496, frame=0, over=0,
crc=0 tx pkts=4917673320, bytes=333233296044, drop=0, errs=0, coll=0
port 2: rx pkts=4917673320, bytes=?, drop=?, errs=?, frame=?, over=?, crc=?
tx pkts=4917967282, bytes=?, drop=287, errs=?, coll=?
LIBVIRT TAG to create VM: <interface type='vhostuser'> <mac
address='52:54:00:3b:83:1a'/> <source type='unix'
path='/usr/local/var/run/openvswitch/dpdkvhost0' mode='client'/> <model
type='virtio'/> <driver> <host csum='off' gso='off' tso4='off'
tso6='off' ecn='off' ufo='off'/> <guest csum='off' tso4='off' tso6='off'
ecn='off' ufo='off'/> </driver> <address type='pci' domain='0x0000'
bus='0x00' slot='0x07' function='0x0'/> </interface>
OVS performance parameters:coremask = 0x100 (2 sibling cores) for the OVS on
hostHugepage=1024Kb for OVS in hostcoremask =0x3(1 logical core) for Dpdk L2
Fwd in guest
RegardsHaris Tanvir
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