Hi All,
Not sure if this is the right forum for this question but figured I
would start here.
Have implemented several dedicated kvm based private virtualization
server in several Outside Data Center (have no access to router/switch
configs), Base host is Rocky Linux 9 with OVS 3.2.1 with dpdk 22.11
complied from source and from that I have created two ovs bridges
groups, "br-ex" is attached to 10Gbps Server NIC Card and vhost-net
attached to a KVM running a firewall/router/vpn appliance ("WAN" Port),
2nd group is "br-int" which creates a form of a lan network without a
physical NIC card, this is attached to the KVM running the
firewall/router/vpn appliance as a "LAN" Port and any KVM guest as well
via a vhost-net style config. When I test from Base Host via speedtest
or iperf3, results vary but are typically 8+/8+Gbps and same test from
KVM guest results in 4/4Gbps which sounds great in theory but actually
throughput between KVM guests or KVM guest and outside world varies,
have seen 31Gb take 15 minutes and have seen the same 31GB take several
hours.
Have gone down the rabbit hole of maybe the firewall/router/vpn
appliance can't handle it but have tried two different vendor products:
Sonicwall and Mikrotik CHR both have similar results. I have also tested
a Rocky LInux KVM guest directly attached to the "br-ex" group but the
results also show degraded performance, which is leading me to believe
something might have been missed in the OVS setup.
br-ex/br-int kvm nic config (difference is source bridge line and slot=
line):
<interface type="bridge">
<mac address="<removed>"/>
<source bridge="br-ex"/>
<virtualport type="openvswitch">
<parameters interfaceid="<removed>"/>
</virtualport>
<target dev="vnet0"/>
<model type="virtio"/>
<driver name="vhost" txmode="iothread" ioeventfd="on" event_idx="off"
queues="8"/>
<alias name="net0"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x08"
function="0x0"/>
</interface>
--
Thanks,
Michael Miller
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