Metadata cache hit-rate
hitRate = H5F.get_mdc_hit_rate(file_id)
hitRate = H5F.get_mdc_hit_rate(file_id) queries
the metadata cache of the target file to obtain its hit-rate since
the last time hit-rate statistics were reset. If the cache has not
been accessed since the last time the hit-rate statistics were reset,
the hit-rate is defined to be 0.0. The hit-rate is calculated as
(cache hits / (cache hits + cache misses))
fid = H5F.open('example.h5');
hit_rate = H5F.get_mdc_hit_rate(fid);
H5F.close(fid);