There used to be a fixed 1 second of real time performance
display with the "-S" parameter. Make it as a configurable
parameter, the minimum interval is still 1 second while user
can configure a larger value.
Change-Id: I159d867f2b6019b095d0291c436f01b110ff69d8
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/393306
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
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