diff options
| -rw-r--r-- | conf/04_vnf.conf | 6 | ||||
| -rw-r--r-- | vnfs/qemu/qemu_dpdk_vhost_user.py | 9 |
2 files changed, 13 insertions, 2 deletions
diff --git a/conf/04_vnf.conf b/conf/04_vnf.conf index 2e86b358..ac5559a2 100644 --- a/conf/04_vnf.conf +++ b/conf/04_vnf.conf @@ -140,11 +140,15 @@ GUEST_CORE_BINDING = [('#EVAL(6+2*#VMINDEX)', '#EVAL(7+2*#VMINDEX)')] # using Vanilla OVS without enabling switch multi-queue. GUEST_NIC_QUEUES = [0] +# Disable VHost user guest NIC merge buffers by enabling the below setting. This +# can improve performance when not using Jumbo Frames. +GUEST_NIC_MERGE_BUFFERS_DISABLE = [True] + # Virtio-Net vhost thread CPU mapping. If using vanilla OVS with virtio-net, # you can affinitize the vhost-net threads by enabling the below setting. There # is one vhost-net thread per port per queue so one guest with 2 queues will # have 4 vhost-net threads. If more threads are present than CPUs given, the -# affinitize will overlap CPUs. +# affinitize will overlap CPUs in a round robin fashion. VSWITCH_VHOST_NET_AFFINITIZATION = False VSWITCH_VHOST_CPU_MAP = [4,5,8,11] diff --git a/vnfs/qemu/qemu_dpdk_vhost_user.py b/vnfs/qemu/qemu_dpdk_vhost_user.py index fc46aba1..794a4772 100644 --- a/vnfs/qemu/qemu_dpdk_vhost_user.py +++ b/vnfs/qemu/qemu_dpdk_vhost_user.py @@ -39,6 +39,12 @@ class QemuDpdkVhostUser(IVnfQemu): else: queue_str, mq_vector_str = '', '' + # Guest merge buffer setting + if S.getValue('GUEST_NIC_MERGE_BUFFERS_DISABLE')[self._number]: + merge_buff = 'mrg_rxbuf=off,' + else: + merge_buff = '' + # calculate index of first interface, i.e. check how many # interfaces has been created for previous VMs, where 1st NIC # of 1st VM has index 0 @@ -60,7 +66,8 @@ class QemuDpdkVhostUser(IVnfQemu): '-device', 'virtio-net-pci,mac=' + self._nics[nic]['mac'] + - ',netdev=' + net + ',csum=off,gso=off,' + + ',netdev=' + net + ',csum=off,' + merge_buff + + 'gso=off,' + 'guest_tso4=off,guest_tso6=off,guest_ecn=off' + mq_vector_str, ] |