Re: [Qemu-devel] [PATCH v5 00/11] virtio: virtio-blk data plane

2012-12-06 Thread Stefan Hajnoczi
On Thu, Dec 06, 2012 at 01:38:28PM +0200, Michael S. Tsirkin wrote: > On Wed, Dec 05, 2012 at 09:46:59PM +0100, Stefan Hajnoczi wrote: > > This series adds the -device virtio-blk-pci,x-data-plane=on property that > > enables a high performance I/O codepath. A dedicated thread is used to > > proce

Re: [Qemu-devel] [PATCH v5 00/11] virtio: virtio-blk data plane

2012-12-06 Thread Stefan Hajnoczi
On Fri, Dec 07, 2012 at 10:43:24AM +0800, Liu Yuan wrote: > On 12/06/2012 04:46 AM, Stefan Hajnoczi wrote: > > Limitations: > > * Only format=raw is supported > > The boost number looks promising, but support of other format(which > might as well fit into this new IO path design) is in the plan?

Re: [Qemu-devel] [PATCH v5 00/11] virtio: virtio-blk data plane

2012-12-06 Thread Liu Yuan
Hi Stefan, On 12/06/2012 04:46 AM, Stefan Hajnoczi wrote: > Limitations: > * Only format=raw is supported The boost number looks promising, but support of other format(which might as well fit into this new IO path design) is in the plan? It seems that bypassing block layer would end up adding ye

Re: [Qemu-devel] [PATCH v5 00/11] virtio: virtio-blk data plane

2012-12-06 Thread Michael S. Tsirkin
On Wed, Dec 05, 2012 at 09:46:59PM +0100, Stefan Hajnoczi wrote: > This series adds the -device virtio-blk-pci,x-data-plane=on property that > enables a high performance I/O codepath. A dedicated thread is used to > process > virtio-blk requests outside the global mutex and without going through

[Qemu-devel] [PATCH v5 00/11] virtio: virtio-blk data plane

2012-12-05 Thread Stefan Hajnoczi
This series adds the -device virtio-blk-pci,x-data-plane=on property that enables a high performance I/O codepath. A dedicated thread is used to process virtio-blk requests outside the global mutex and without going through the QEMU block layer. Khoa Huynh reported an increase from 140,000 IOPS