Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-06 Thread Bob Liu
On 02/06/2015 07:01 PM, Wei Liu wrote: > On Fri, Feb 06, 2015 at 06:47:17PM +0800, Bob Liu wrote: >> >> On 02/02/2015 06:43 PM, Roger Pau Monné wrote: >>> El 23/01/15 a les 10.14, Bob Liu ha escrit: Extend xen/block to support multi-page ring. * xen-blkback notify blkfront with feature-

Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-06 Thread Wei Liu
On Fri, Feb 06, 2015 at 06:47:17PM +0800, Bob Liu wrote: > > On 02/02/2015 06:43 PM, Roger Pau Monné wrote: > > El 23/01/15 a les 10.14, Bob Liu ha escrit: > >> Extend xen/block to support multi-page ring. > >> * xen-blkback notify blkfront with feature-multi-ring-pages > >> * xen-blkfront write

Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-06 Thread Bob Liu
On 02/02/2015 06:43 PM, Roger Pau Monné wrote: > El 23/01/15 a les 10.14, Bob Liu ha escrit: >> Extend xen/block to support multi-page ring. >> * xen-blkback notify blkfront with feature-multi-ring-pages >> * xen-blkfront write to xenstore about how many pages are used as the ring >> >> If using

Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-06 Thread Bob Liu
On 02/06/2015 01:41 AM, Felipe Franciosi wrote: > Hi Bob, > > Can you elaborate on the environment where you measured such an improvement? > > I'm particularly interested in: > What workload were you issuing? (e.g. 4K seq reads?) 8k writes. > What backend were you using? (e.g. null driver? wha

Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-05 Thread Felipe Franciosi
Hi Bob, Can you elaborate on the environment where you measured such an improvement? I'm particularly interested in: What workload were you issuing? (e.g. 4K seq reads?) What backend were you using? (e.g. null driver? what parameters? some specific disk/array?) What was the host configuration fo

Re: [Xen-devel] [PATCH 2/2] drivers: xen/block: add multi-page ring support

2015-02-02 Thread Roger Pau Monné
El 23/01/15 a les 10.14, Bob Liu ha escrit: > Extend xen/block to support multi-page ring. > * xen-blkback notify blkfront with feature-multi-ring-pages > * xen-blkfront write to xenstore about how many pages are used as the ring > > If using 4 pages as the ring, inflight requests inscreased fro