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block: add accounting for merged requests

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Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Peter Lieven 2015-02-02 14:52:18 +01:00 • committed by Kevin Wolf
parent 35f5a49374
commit f4564d53c6
7 changed files with 45 additions and 6 deletions
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9
qapi/block-core.json
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@ -407,13 +407,20 @@
# growable sparse files (like qcow2) that are used on top
# of a physical device.
#
# @rd_merged: Number of read requests that have been merged into another
# request (Since 2.3).
#
# @wr_merged: Number of write requests that have been merged into another
# request (Since 2.3).
#
# Since: 0.14.0
##
{ 'type': 'BlockDeviceStats',
'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'rd_operations': 'int',
'wr_operations': 'int', 'flush_operations': 'int',
'flush_total_time_ns': 'int', 'wr_total_time_ns': 'int',
'rd_total_time_ns': 'int', 'wr_highest_offset': 'int' } }
'rd_total_time_ns': 'int', 'wr_highest_offset': 'int',
'rd_merged': 'int', 'wr_merged': 'int' } }
##
# @BlockStats: