On Mon, Nov 05, 2018 at 02:03:26PM +0000, Vitaly Mayatskikh wrote: > This driver moves virtio-blk host-side processing to kernel (via new > vhost_blk kernel driver). It accelerates virtual disk performance > close to bare metal levels, especially for parellel loads. > > For example, fio numjobs=16 gets 101k randread IOPS using virtio-blk > and 1202k IOPS using vhost-blk, close to 1480k of raw disk performance. > > See the IOPS numbers below. > > The kernel part if you want to try: > - vhost_blk: https://lkml.org/lkml/2018/11/2/648 > - vhost num-queues scalability fix: https://lkml.org/lkml/2018/11/2/550 > > # fio num-jobs > # A: bare metal over block > # B: bare metal over file > # C: virtio-blk over block > # D: virtio-blk over file > # E: vhost-blk over block > # F: vhost-blk over file > # > # A B C D E F > > 1 171k 151k 148k 151k 187k 175k > 2 328k 302k 249k 241k 334k 296k > 3 479k 437k 179k 174k 464k 404k > 4 622k 568k 143k 183k 580k 492k > 5 755k 697k 136k 128k 693k 579k > 6 887k 808k 131k 120k 782k 640k > 7 1004k 926k 126k 131k 863k 693k > 8 1099k 1015k 117k 115k 931k 712k > 9 1194k 1119k 115k 111k 991k 711k > 10 1278k 1207k 109k 114k 1046k 695k > 11 1345k 1280k 110k 108k 1091k 663k > 12 1411k 1356k 104k 106k 1142k 629k > 13 1466k 1423k 106k 106k 1170k 607k > 14 1517k 1486k 103k 106k 1179k 589k > 15 1552k 1543k 102k 102k 1191k 571k > 16 1480k 1506k 101k 102k 1202k 566k > > Vitaly Mayatskikh (1): > Add vhost-pci-blk driver > > configure | 10 +++++++ > default-configs/virtio.mak | 1 + > hw/block/Makefile.objs | 1 + > hw/virtio/virtio-pci.c | 60 ++++++++++++++++++++++++++++++++++++++ > hw/virtio/virtio-pci.h | 19 ++++++++++++ > 5 files changed, 91 insertions(+)
I think you should Cc more widely to get meaningful review. At least virtio-blk and block layer core people. > -- > 2.17.1
