Check if stopwatch module is calculating statistics as expected.
Signed-off-by: Jakub Sitnicki <jkbs@redhat.com>
Signed-off-by: Mark Michelson <mmichels@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This is similar to the existing coverage and perf-counter APIs in OVS.
However, rather than keeping counters, this is aimed at timing how long
operations take to perform. "Operations" in this case can be anything
from a loop iteration, to a function, to something more complex.
The library allows for named stopwatches to be created. From there, the
stopwatch can be started and stopped via stopwatch_start() and
stopwatch_stop(). After each run, statistics for the stopwatch will be
calculated.
Statistics for a particular stopwatch can be queried from the command
line by using ovs-appctl -t <target> stopwatch/show <stopwatch name>.
Statistics can be reset from the command line using
ovs-appctl -t <target> stopwatch/reset <stopwatch name>
Signed-off-by: Mark Michelson <mmichels@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
