From a325eb33fbe408243209b19f2d9cc288b2e57548 Mon Sep 17 00:00:00 2001 From: Christian Trautman Date: Mon, 5 Sep 2016 02:42:19 -0400 Subject: merge_buffers: Add option to disable merge buffer on qemu startup In cases with VHost user and non-jumbo frame scenarios we can disable merge buffers on the guest NICS to improve performance. This patch adds this option to the 04_vnf conf file. JIRA: VSPERF-388 Change-Id: Ic1f776e90fdccaa5d5a0c952c96811a8747fe936 Signed-off-by: Christian Trautman --- conf/04_vnf.conf | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'conf') 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] -- cgit 1.2.3-korg