Re: [Qemu-devel] is there a way to optimize vhost of virtio-net

2016-10-20 Thread Jason Wang
On 2016年10月17日 18:39, yue wrote: hi, jasowang: according to my test , the vm's network performance is just 20% of physical ethernet, the thread of vhost easily eat up 100% cpu when under pressure. What's you configuration (e.g qemu cli, host and guest kernel versions and network set

[Qemu-devel] is there a way to optimize vhost of virtio-net

2016-10-18 Thread yue
hi, jasowang: according to my test , the vm's network performance is just 20% of physical ethernet, the thread of vhost  easily eat up 100% cpu when under pressure. when using multi queue(two queues) the performance goes up by 50%, but it uses more threads. if we can come to a conclusion th

[Qemu-devel] is there a way to optimize vhost of virtio-net

2016-10-17 Thread yue
hi, jasowang: according to my test , the vm's network performance is just 20% of physical ethernet, the thread of vhost easily eat up 100% cpu when under pressure. when using multi queue(two queues) the performance goes up by 50%, but it uses more threads. if we can come to a conclusion th

[Qemu-devel] is there a way to optimize vhost of virtio-net

2016-10-17 Thread yue
hi, jasowang: according to my test , the vm's network performance is just 20% of physical ethernet, the thread of vhost easily eat up 100% cpu when under pressure. when using multi queue(two queues) the performance goes up by 50%, but it uses more threads. if we can come to a conclusion th