Re: [Xen-devel] [PATCH v4 09/10] xen/blkfront: make persistent grants per-queue

2015-11-04 Thread Konrad Rzeszutek Wilk
On Mon, Nov 02, 2015 at 12:21:45PM +0800, Bob Liu wrote: > Make persistent grants per-queue/ring instead of per-device, so that we can > drop the 'dev_lock' and get better scalability. And what is the performance value for this? How much better scalability do you get with this? .. snip.. > @@ -101

[Xen-devel] [PATCH v4 09/10] xen/blkfront: make persistent grants per-queue

2015-11-01 Thread Bob Liu
Make persistent grants per-queue/ring instead of per-device, so that we can drop the 'dev_lock' and get better scalability. Signed-off-by: Bob Liu --- drivers/block/xen-blkfront.c | 89 +--- 1 file changed, 34 insertions(+), 55 deletions(-) diff --git a/d