Hi Ouyang,
(2014/08/27 15:00), Ouyang, Changchun wrote: > Yes, it doesn't matter which one is faster for virtio device creation > and destroy, as it is not in data path. I agree with you. Thanks, Tetsuya >> Thanks, >> Tetsuya >> >> >>> Regards, >>> Changchun >>> >>>> -----Original Message----- >>>> From: Tetsuya.Mukawa [mailto:mukawa at igel.co.jp] >>>> Sent: Wednesday, August 27, 2014 12:39 PM >>>> To: Ouyang, Changchun; dev at dpdk.org >>>> Cc: Xie, Huawei; Katsuya MATSUBARA; nakajima.yoshihiro at lab.ntt.co.jp; >>>> Hitoshi Masutani >>>> Subject: Re: [dpdk-dev] [RFC] lib/librte_vhost: qemu vhost-user >>>> support into DPDK vhost library >>>> >>>> >>>> (2014/08/27 9:43), Ouyang, Changchun wrote: >>>>> Do we have performance comparison between both implementation? >>>> Hi Changchun, >>>> >>>> If DPDK applications are running on both guest and host side, the >>>> performance should be almost same, because while transmitting data >>>> virt queues are accessed by virtio-net PMD and libvhost. In libvhost, >>>> the existing vhost implementation and a vhost-user implementation >>>> will shares or uses same code to access virt queues. So I guess the >>>> performance will be almost same. >>>> >>>> Thanks, >>>> Tetsuya >>>> >>>> >>>>> Thanks >>>>> Changchun >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Xie, Huawei >>>>> Sent: Tuesday, August 26, 2014 7:06 PM >>>>> To: dev at dpdk.org >>>>> Subject: Re: [dpdk-dev] [RFC] lib/librte_vhost: qemu vhost-user >>>>> support into DPDK vhost library >>>>> >>>>> Hi all: >>>>> We are implementing qemu official vhost-user interface into DPDK >>>>> vhost >>>> library, so there would be two coexisting implementations for user >>>> space vhost backend. >>>>> Pro and cons in my mind: >>>>> Existing solution: >>>>> Pros: works with qemu version before 2.1; Cons: depends on eventfd >>>> proxy kernel module and extra maintenance effort Qemu vhost-user: >>>>> Pros: qemu official us-vhost interface; Cons: only >>>>> available >> after >>>> qemu 2.1 >>>>> BR. >>>>> huawei
