MongoDB Documentation, Release 3.0.4 Chapter 5. Administration 306 "pages evicted because they had chains of deleted items" : <num>, "failed eviction of pages that exceeded the in-memory maximum" : <num>, "hazard pointer blocked page eviction" : <num>, "internal pages evicted" : <num>, "maximum page size at eviction" : <num>, "eviction server candidate queue empty when topping up" : <num>, "eviction server candidate queue not empty when topping up" : <num>, "eviction server evicting pages" : <num>, "eviction server populating queue, but not evicting pages" : <num>, "eviction server unable to reach eviction goal" : <num>, "pages split during eviction" : <num>, "pages walked for eviction" : <num>, "eviction worker thread evicting pages" : <num>, "in-memory page splits" : <num>, "percentage overhead" : <num>, "tracked dirty pages in the cache" : <num>, "pages currently held in the cache" : <num>, "pages read into cache" : <num>, "pages written from cache" : <num> }, "connection" : { "pthread mutex condition wait calls" : <num>, "files currently open" : <num>, "memory allocations" : <num>, "memory frees" : <num>, "memory re-allocations" : <num>, "total read I/Os" : <num>, "pthread mutex shared lock read-lock calls" : <num>, "pthread mutex shared lock write-lock calls" : <num>, "total write I/Os" : <num> }, "cursor" : { "cursor create calls" : <num>, "cursor insert calls" : <num>, "cursor next calls" : <num>, "cursor prev calls" : <num>, "cursor remove calls" : <num>, "cursor reset calls" : <num>, "cursor search calls" : <num>, "cursor search near calls" : <num>, "cursor update calls" : <num> }, "data-handle" : { "connection dhandles swept" : <num>, "connection candidate referenced" : <num>, "connection sweeps" : <num>, "connection time-of-death sets" : <num>, "session dhandles swept" : <num>, "session sweep attempts" : <num> }, "log" : { "log buffer size increases" : <num>, "total log buffer size" : <num>, "log bytes of payload data" : <num>, "log bytes written" : <num>, "yields waiting for previous log file close" : <num>, "total size of compressed records" : <num>, "total in-memory size of compressed records" : <num>,