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authorAlberto Garcia <berto@igalia.com>2017-06-19 16:40:08 +0300
committerKevin Wolf <kwolf@redhat.com>2017-06-26 14:51:13 +0200
commitee22a9d86921310672aa8775489217f3e2f5e1c6 (patch)
tree8c2f02810e7f5954afdb65a64a9cb8f2504adfed /pc-bios/petalogix-ml605.dtb
parent86b862c431ae5effa80a095c9c989a5a9976ead1 (diff)
qcow2: Merge the writing of the COW regions with the guest data
If the guest tries to write data that results on the allocation of a new cluster, instead of writing the guest data first and then the data from the COW regions, write everything together using one single I/O operation. This can improve the write performance by 25% or more, depending on several factors such as the media type, the cluster size and the I/O request size. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'pc-bios/petalogix-ml605.dtb')
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