On Thu, Dec 15, 2016 at 3:06 AM, Stefan Hajnoczi <stefa...@gmail.com> wrote: > On Thu, Dec 15, 2016 at 12:17:09AM -0500, Weiwei Jia wrote: >> BTW, do we have an example to show users how to config following >> virtio-blk dataplane commands into XML configuration file? >> >> qemu -object iothread,id=iothread0 \ >> -drive if=none,id=drive0,file=test.img,format=raw,cache=none \ >> -device virtio-blk-pci,iothread=iothread0,drive=drive0 > > https://libvirt.org/formatdomain.html#elementsIOThreadsAllocation > > See also <cputune><iothreadpin> and <driver iothread=>.
It seems that the libvirt XML configuration in above link [1] is different from the configuration which you said in your blog [2]. Your blog just said how to use x-data-plane for virtio-blk but libvirt XML configuration doesn't say anything about x-data-plane. Does it in default support by latest QEMU version. If I want to test virtio-blk or virtio-scsi data-plane to make timeslice more stable, what version of QEMU/KVM should I use? Would you please give me some suggestions? Thank you. [1] https://libvirt.org/formatdomain.html#elementsIOThreadsAllocation [2] http://blog.vmsplice.net/2013/03/new-in-qemu-14-high-performance-virtio.html Cheers, Weiwei Jia
