Messages in this thread | | | Date | Mon, 2 Feb 2015 10:43:23 +0000 | From | Roger Pau Monné <> | Subject | Re: [PATCH 2/2] drivers: xen/block: add multi-page ring support |
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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 from 32 to 128 and > IOPS improved nearly 400% on our system. > > Signed-off-by: Bob Liu <bob.liu@oracle.com> > --- > drivers/block/xen-blkback/xenbus.c | 86 +++++++++++++++++++++++++-------- > drivers/block/xen-blkfront.c | 94 ++++++++++++++++++++++++++----------
This requires a patch to xen/include/public/io/blkif.h in the Xen repository describing how this protocol extension is going to work before reviewing the Linux implementation.
Roger.
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