Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10

[Charles . Tsai-蔡清海-研究發展部]

I am just curious about this issue. Is there any document mentioning the lowest 
version of the kernel to be supported by VirtIO?


-----Original Message-----
From: Dunrong Huang [mailto:address@hidden 
Sent: Monday, June 04, 2012 2:17 PM
To: Charles.Tsai-蔡清海-研究發展部
Cc: address@hidden
Subject: Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10

2012/6/4 Charles.Tsai-蔡清海-研究發展部 <address@hidden>:
> The kernel version is 3.0.0.12
> The Qemu version is 1.0.0(we upgraded it)
>
> What version of kernel do we need to upgrade?
The latest version is v3.4, so you can try and upgrade to v3.1, v3.2 or v3.3, 
and test it.
>
> -----Original Message-----
> From: mathslinux [mailto:address@hidden
> Sent: Monday, June 04, 2012 2:03 PM
> To: Charles.Tsai-蔡清海-研究發展部
> Cc: address@hidden
> Subject: Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10
>
> Charles.Tsai-蔡清海-研究發展部 <address@hidden> writes:
>
>> We recently ran an Ubuntu 11.10 VM which was installed with VirtIO NIC 
>> driver. The VirtIO net driver came from the Ubuntu's default package. The VM 
>> we installed was configured as a bridge mode. When we ran the Iperf test 
>> against the VM, the network interface of the VM was fairly unstable. 
>> Sometimes, the network interface of the VM could not receive the packets and 
>> we needed to bright the network interface down and up in order to make it 
>> work. After we replaced the VirtIo Net driver with ne2k driver and it worked 
>> quite stably now.
>>
>> We know that the performance of virtIO is much better than ne2k in virtual 
>> environment. We would like to use virtio driver instead. If this is the 
>> virtio driver issue, can you tell us where to get the latest virtIO driver 
>> for Ubuntu VM? Otherwise, tell us how to make the virtio net driver work in 
>> Ubuntu VM if you have ever had similar issue before.
>>
>> The version of Qemu installed in Ubuntu is 0.14.1.
>>
> The virtio driver is implemented in the guest operating system, it's a kernel 
> module, so what is your kernel version? Maybe you need a kernel of higher 
> version.




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