What is the time unit in the lock stat output from /proc/lock_stat? microsecond or nanosecond?
class name con-bounces contentions waittime-min waittime-max waittime-total acq-bounces acquisitions holdtime-min holdtime-max holdtime-total
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&(&dentry->d_lock)->rlock: 2917691 3323806 0.10 157427.70 2221545741.66 8786458 19485395 0.00 235.65 38647798.25
Buried in the documentation is the following line:
So those values are in microseconds.