Chelsio Communications Terminator Series Installation And User Manual page 61

Chapter II. Network (NIC/TOE)
iii. Bring up the Virtual Network interface with the required IP address.
[root@host~]# ifconfig <virtual-interface> <IP address> up
For better performance, the following settings are recommended:
i. Increase the number of queues for the Virtual network interface to 8.
[root@host~]# virsh edit <VM>
</interface>
<interface type='bridge'>
<mac address='52:54:00:34:8a:4a'/>
<source bridge='br0'/>
<model type='virtio'/>
<driver name='vhost' queues='8'/>
ii. Map the Virtual CPUs of the VM to physical CPUs which will be free.
Example: On a machine with 16 cores, VM Virtual CPUs were pinned to physical cores 8-15,
leaving cores 0-7 to be utilized by the host.
[root@host~]# virsh edit <VM>
<vcpu placement='static' cpuset='8-15'>8</vcpu>
iii. Restart the libvirtd services and Virtual Machine Manager.
[root@host~]# systemctl restart libvirtd.service
[root@host~]# systemctl restart libvirt-guests.service
[root@host~]# virt-manager
iv. Bind the Virtual Network Interface Queues to different CPUs.
v. Increase the TCP buffers by configuring the
Performance Tuning section.
Chelsio Unified Wire for Linux
sysctl variables mentioned in NIC settings of
61