Hi All
I've been scratching my head, and have looked all over the internet, but can't come up with a solution. Hopefully someone here can help out. I'm fairly new in the kvm virtualisation space, but know my way around ubuntu and linux.
Let me describe what's happening.
I've set up ubuntu 16.04 as a server host for KVM vm's. I set up bridged networking, so that my local network can access the virtual machines and visa-versa. The Bridge is recognised, and I have comms as I want to. The issue is that I can't get more than 10Mb/s to either the host or the virtual machines. What I'm suspecting is that in ubuntu the bridge is set up, and ubuntu can't recognise the virtual nic's or bridge as being able to handle more than this speed.
This is from the host:
lshw -c Network
As can be seen the physical nics have a Gbit/s capacity, but somehow the virtual(vnet) have only 10Mbit/s.
I've tried using ethtool etc, to no avail.
Could someone please point me in the right direction. I don't think there's a problem with the virtio drivers I'm using, cause the guests, seem to be showing the correct speeds, however the host virtual nics seem capped at that 10Mbit/s
Any help would be appreciated.
I've been scratching my head, and have looked all over the internet, but can't come up with a solution. Hopefully someone here can help out. I'm fairly new in the kvm virtualisation space, but know my way around ubuntu and linux.
Let me describe what's happening.
I've set up ubuntu 16.04 as a server host for KVM vm's. I set up bridged networking, so that my local network can access the virtual machines and visa-versa. The Bridge is recognised, and I have comms as I want to. The issue is that I can't get more than 10Mb/s to either the host or the virtual machines. What I'm suspecting is that in ubuntu the bridge is set up, and ubuntu can't recognise the virtual nic's or bridge as being able to handle more than this speed.
This is from the host:
lshw -c Network
Code:
*-network:0
description: Ethernet interface
product: NetXtreme BCM5719 Gigabit Ethernet PCIe
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: eno1
version: 01
serial: 40:a8:f0:27:ed:64
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=5719-v1.46 NCSI v1.3.16.0 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:51 memory:f6bf0000-f6bfffff memory:f6be0000-f6beffff memory:f6bd0000-f6bdffff memory:f4000000-f403ffff
*-network:1 DISABLED
description: Ethernet interface
product: NetXtreme BCM5719 Gigabit Ethernet PCIe
vendor: Broadcom Corporation
physical id: 0.1
bus info: pci@0000:03:00.1
logical name: eno2
version: 01
serial: 40:a8:f0:27:ed:65
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 firmware=5719-v1.46 NCSI v1.3.16.0 latency=0 link=no multicast=yes port=twisted pair
resources: irq:52 memory:f6bc0000-f6bcffff memory:f6bb0000-f6bbffff memory:f6ba0000-f6baffff memory:f4040000-f407ffff
*-network:2 DISABLED
description: Ethernet interface
product: NetXtreme BCM5719 Gigabit Ethernet PCIe
vendor: Broadcom Corporation
physical id: 0.2
bus info: pci@0000:03:00.2
logical name: eno3
version: 01
serial: 40:a8:f0:27:ed:66
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 firmware=5719-v1.46 NCSI v1.3.16.0 latency=0 link=no multicast=yes port=twisted pair
resources: irq:51 memory:f6b90000-f6b9ffff memory:f6b80000-f6b8ffff memory:f6b70000-f6b7ffff memory:f4080000-f40bffff
*-network:3
description: Ethernet interface
product: NetXtreme BCM5719 Gigabit Ethernet PCIe
vendor: Broadcom Corporation
physical id: 0.3
bus info: pci@0000:03:00.3
logical name: eno4
version: 01
serial: 40:a8:f0:27:ed:67
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=5719-v1.46 NCSI v1.3.16.0 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:52 memory:f6b60000-f6b6ffff memory:f6b50000-f6b5ffff memory:f6b40000-f6b4ffff memory:f40c0000-f40fffff
*-network:0
description: Ethernet interface
physical id: 3
logical name: vnet0
serial: fe:54:00:d6:21:44
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
*-network:1
description: Ethernet interface
physical id: 4
logical name: vnet4
serial: fe:54:00:b0:ff:53
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
*-network:2
description: Ethernet interface
physical id: 5
logical name: vnet3
serial: fe:54:00:43:7d:4d
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
*-network:3
description: Ethernet interface
physical id: 6
logical name: vnet2
serial: fe:54:00:7b:a0:98
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
*-network:4
description: Ethernet interface
physical id: 7
logical name: vnet1
serial: fe:54:00:c6:ac:b5
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/sI've tried using ethtool etc, to no avail.
Could someone please point me in the right direction. I don't think there's a problem with the virtio drivers I'm using, cause the guests, seem to be showing the correct speeds, however the host virtual nics seem capped at that 10Mbit/s
Any help would be appreciated.