Tim Smith 6de45f9109 xen-block: improve batching behaviour ... When I/O consists of many small requests, performance is improved by batching them together in a single io_submit() call. When there are relatively few requests, the extra overhead is not worth it. This introduces a check to start batching I/O requests via blk_io_plug()/ blk_io_unplug() in an amount proportional to the number which were already in flight at the time we started reading the ring. Signed-off-by: Tim Smith <tim.smith@citrix.com> Re-based and commit comment adjusted. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Acked-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>		2019-01-14 13:45:40 +00:00
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Makefile.objs	xen: add header and build dataplane/xen-block.c	2019-01-14 13:45:40 +00:00
trace-events	docs: fix broken paths to docs/devel/tracing.txt	2017-07-31 13:12:53 +03:00
virtio-blk.c	Replace '-enable-kvm' with '-accel kvm' in docs and help texts	2018-06-28 19:05:32 +02:00
virtio-blk.h	hw/block: Fix the return type	2017-12-19 09:25:28 +00:00
xen-block.c	xen-block: improve batching behaviour	2019-01-14 13:45:40 +00:00
xen-block.h	xen: remove 'XenBlkDev' and 'blkdev' names from dataplane/xen-block	2019-01-14 13:45:40 +00:00