tree acadf4f7a6bf98a4ce5363ea40a5658542949640
parent 362e9299b34b3101aaa20f20363441c9f055fa5e
author Alberto Garcia <berto@igalia.com> 1446046385 +0200
committer Kevin Wolf <kwolf@redhat.com> 1447341765 +0100

block: Compute minimum, maximum and average I/O latencies

This patch keeps track of the minimum, maximum and average latencies
of I/O operations during a certain interval of time.

The values are exposed in the BlockDeviceTimedStats structure.

An option to define the intervals to collect these statistics will be
added in a separate patch.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: c7382dc89622c64f918d09f32815827772628f8e.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>