dm stats: collect and report histogram of IO latencies

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Add an option to dm statistics to collect and report a histogram of
IO latencies.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Mikulas Patocka 2015-06-09 17:22:05 -04:00 • committed by Mike Snitzer

parent c96aec344d

commit dfcfac3e4c

2 changed files with 199 additions and 25 deletions

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19

Documentation/device-mapper/statistics.txt

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205

drivers/md/dm-stats.c

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