137 void Add(std::map<std::string, double>* stats, const std::string& key,  in Add()  function
144   Add(&stats, "persistentcache.blockcachetier.bytes_piplined",  in Stats()
146   Add(&stats, "persistentcache.blockcachetier.bytes_written",  in Stats()
148   Add(&stats, "persistentcache.blockcachetier.bytes_read",  in Stats()
150   Add(&stats, "persistentcache.blockcachetier.insert_dropped",  in Stats()
152   Add(&stats, "persistentcache.blockcachetier.cache_hits",  in Stats()
154   Add(&stats, "persistentcache.blockcachetier.cache_misses",  in Stats()
156   Add(&stats, "persistentcache.blockcachetier.cache_errors",  in Stats()
158   Add(&stats, "persistentcache.blockcachetier.cache_hits_pct",  in Stats()
160   Add(&stats, "persistentcache.blockcachetier.cache_misses_pct",  in Stats()
162   Add(&stats, "persistentcache.blockcachetier.read_hit_latency",  in Stats()
164   Add(&stats, "persistentcache.blockcachetier.read_miss_latency",  in Stats()
166   Add(&stats, "persistentcache.blockcachetier.write_latency",  in Stats()
177   stats_.bytes_pipelined_.Add(size);  in Insert()
239       stats_.write_latency_.Add(timer.ElapsedNanos() / 1000);  in InsertImpl()
258   cache_file_->Add(info);  in InsertImpl()
261   stats_.bytes_written_.Add(data.size());  in InsertImpl()
262   stats_.write_latency_.Add(timer.ElapsedNanos() / 1000);  in InsertImpl()
275     stats_.read_miss_latency_.Add(timer.ElapsedNanos() / 1000);  in Lookup()
284     stats_.read_miss_latency_.Add(timer.ElapsedNanos() / 1000);  in Lookup()
299     stats_.read_miss_latency_.Add(timer.ElapsedNanos() / 1000);  in Lookup()
309   stats_.bytes_read_.Add(*size);  in Lookup()
311   stats_.read_hit_latency_.Add(timer.ElapsedNanos() / 1000);  in Lookup()