Xubuntu: 20.04
virt-manager: 1:2.2.1-3ubuntu2.1
virt-viewer: 7.0-2build1
qemu: 1:4.2.3ubuntu6.15
My network was recently upgraded with a 1Gbps router, and in the process of testing various machines for throughput I noticed that my Windows 10 system running under QEMU/KVM on one machine was throttled at 100Mbps. I looked into this and see that it is using a virtual Realtek rtl8139 device for the NIC which is set to Bridge br0: Host device eth1. So even though I have 1Gbps physical Ethernet on my network and motherboard, this interface appears to be the bottleneck. Maybe there is a reason for this configuration, or maybe, out of ignorance, I set it up incorrectly initially. I'm wondering if there is a way to alter the settings to increase throughput and get closer to 1Gbps? Should I change this device to virtio or e1000 (or something else) and is this advised? Does Windows 10 work with these other virtual devices and/or are there a negative system load impact from doing this? Is there anything else I need to be aware of? Thanks for any pointer you can offer.
virt-manager: 1:2.2.1-3ubuntu2.1
virt-viewer: 7.0-2build1
qemu: 1:4.2.3ubuntu6.15
My network was recently upgraded with a 1Gbps router, and in the process of testing various machines for throughput I noticed that my Windows 10 system running under QEMU/KVM on one machine was throttled at 100Mbps. I looked into this and see that it is using a virtual Realtek rtl8139 device for the NIC which is set to Bridge br0: Host device eth1. So even though I have 1Gbps physical Ethernet on my network and motherboard, this interface appears to be the bottleneck. Maybe there is a reason for this configuration, or maybe, out of ignorance, I set it up incorrectly initially. I'm wondering if there is a way to alter the settings to increase throughput and get closer to 1Gbps? Should I change this device to virtio or e1000 (or something else) and is this advised? Does Windows 10 work with these other virtual devices and/or are there a negative system load impact from doing this? Is there anything else I need to be aware of? Thanks for any pointer you can offer.