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....@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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/