inmem_test:PRIMARY> db.serverStatus().inMemory { "uri" : "statistics:", "LSM" : { "application work units currently queued" : 0, "merge work units currently queued" : 0, "rows merged in an LSM tree" : 0, "sleep for LSM checkpoint throttle" : 0, "sleep for LSM merge throttle" : 0, "switch work units currently queued" : 0, "tree maintenance operations discarded" : 0, "tree maintenance operations executed" : 0, "tree maintenance operations scheduled" : 0, "tree queue hit maximum" : 0 }, "async" : { "current work queue length" : 0, "maximum work queue length" : 0, "number of allocation state races" : 0, "number of flush calls" : 0, "number of operation slots viewed for allocation" : 0, "number of times operation allocation failed" : 0, "number of times worker found no work" : 0, "total allocations" : 0, "total compact calls" : 0, "total insert calls" : 0, "total remove calls" : 0, "total search calls" : 0, "total update calls" : 0 }, "block-manager" : { "blocks pre-loaded" : 0, "blocks read" : 0, "blocks written" : 0, "bytes read" : 0, "bytes written" : 0, "mapped blocks read" : 0, "mapped bytes read" : 0 }, "cache" : { "bytes currently in the cache" : 678575506, "bytes read into cache" : 0, "bytes written from cache" : 0, "checkpoint blocked page eviction" : 0, "eviction currently operating in aggressive mode" : 0, "eviction server candidate queue empty when topping up" : 94, "eviction server candidate queue not empty when topping up" : 0, "eviction server evicting pages" : 0, "eviction server populating queue, but not evicting pages" : 93, "eviction server unable to reach eviction goal" : 0, "eviction worker thread evicting pages" : 26, "failed eviction of pages that exceeded the in-memory maximum" : 1593, "files with active eviction walks" : 0, "files with new eviction walks started" : 118, "hazard pointer blocked page eviction" : 1593, "in-memory page passed criteria to be split" : 1784, "in-memory page splits" : 94, "internal pages evicted" : 0, "internal pages split during eviction" : 0, "leaf pages split during eviction" : 65, "lookaside table insert calls" : 0, "lookaside table remove calls" : 0, "maximum bytes configured" : 3221225472, "maximum page size at eviction" : 10528925, "modified pages evicted" : 288, "modified pages evicted by application threads" : 0, "page split during eviction deepened the tree" : 0, "page written requiring lookaside records" : 0, "pages currently held in the cache" : 6523, "pages evicted because they exceeded the in-memory maximum" : 11, "pages evicted because they had chains of deleted items" : 345, "pages evicted by application threads" : 0, "pages queued for eviction" : 26, "pages queued for urgent eviction" : 1, "pages read into cache" : 0, "pages read into cache requiring lookaside entries" : 0, "pages seen by eviction walk" : 235323, "pages selected for eviction unable to be evicted" : 1593, "pages walked for eviction" : 235089, "pages written from cache" : 0, "pages written requiring in-memory restoration" : 0, "percentage overhead" : 8, "tracked bytes belonging to internal pages in the cache" : 473874, "tracked bytes belonging to leaf pages in the cache" : 678101632, "tracked bytes belonging to overflow pages in the cache" : 0, "tracked dirty bytes in the cache" : 488747396, "tracked dirty pages in the cache" : 549, "unmodified pages evicted" : 0 }, "connection" : { "auto adjusting condition resets" : 94, "auto adjusting condition wait calls" : 52387, "files currently open" : 26, "memory allocations" : 19170619, "memory frees" : 13417405, "memory re-allocations" : 14214, "pthread mutex condition wait calls" : 15395141, "pthread mutex shared lock read-lock calls" : 4456417, "pthread mutex shared lock write-lock calls" : 22932, "total read I/Os" : 0, "total write I/Os" : 1 }, "cursor" : { "cursor create calls" : 14171, "cursor insert calls" : 6213727, "cursor next calls" : 1325962, "cursor prev calls" : 543, "cursor remove calls" : 3145014, "cursor reset calls" : 15442417, "cursor restarted searches" : 2391945, "cursor search calls" : 4651791, "cursor search near calls" : 223863, "cursor update calls" : 0, "truncate calls" : 0 }, "data-handle" : { "connection data handles currently active" : 23, "connection sweep candidate became referenced" : 0, "connection sweep dhandles closed" : 0, "connection sweep dhandles removed from hash list" : 0, "connection sweep time-of-death sets" : 0, "connection sweeps" : 5192, "session dhandles swept" : 0, "session sweep attempts" : 1606 }, "log" : { "busy returns attempting to switch slots" : 0, "consolidated slot closures" : 0, "consolidated slot join races" : 0, "consolidated slot join transitions" : 0, "consolidated slot joins" : 0, "consolidated slot unbuffered writes" : 0, "log bytes of payload data" : 0, "log bytes written" : 0, "log files manually zero-filled" : 0, "log flush operations" : 0, "log force write operations" : 0, "log force write operations skipped" : 0, "log records compressed" : 0, "log records not compressed" : 0, "log records too small to compress" : 0, "log release advances write LSN" : 0, "log scan operations" : 0, "log scan records requiring two reads" : 0, "log server thread advances write LSN" : 0, "log server thread write LSN walk skipped" : 0, "log sync operations" : 0, "log sync_dir operations" : 0, "log write operations" : 0, "logging bytes consolidated" : 0, "maximum log file size" : 0, "number of pre-allocated log files to create" : 0, "pre-allocated log files not ready and missed" : 0, "pre-allocated log files prepared" : 0, "pre-allocated log files used" : 0, "records processed by log scan" : 0, "total in-memory size of compressed records" : 0, "total log buffer size" : 0, "total size of compressed records" : 0, "written slots coalesced" : 0, "yields waiting for previous log file close" : 0 }, "reconciliation" : { "fast-path pages deleted" : 0, "page reconciliation calls" : 288, "page reconciliation calls for eviction" : 288, "pages deleted" : 223, "split bytes currently awaiting free" : 2491, "split objects currently awaiting free" : 3 }, "session" : { "open cursor count" : 8085, "open session count" : 973 }, "thread-yield" : { "page acquire busy blocked" : 0, "page acquire eviction blocked" : 1596, "page acquire locked blocked" : 34931, "page acquire read blocked" : 0, "page acquire time sleeping (usecs)" : 317519000 }, "transaction" : { "number of named snapshots created" : 0, "number of named snapshots dropped" : 0, "transaction begins" : 4415450, "transaction checkpoint currently running" : 0, "transaction checkpoint generation" : 0, "transaction checkpoint max time (msecs)" : 0, "transaction checkpoint min time (msecs)" : 0, "transaction checkpoint most recent time (msecs)" : 0, "transaction checkpoint total time (msecs)" : 0, "transaction checkpoints" : 0, "transaction failures due to cache overflow" : 0, "transaction range of IDs currently pinned" : 281, "transaction range of IDs currently pinned by a checkpoint" : 0, "transaction range of IDs currently pinned by named snapshots" : 0, "transaction sync calls" : 0, "transactions committed" : 1614993, "transactions rolled back" : 2800456 }, "concurrentTransactions" : { "write" : { "out" : 1, "available" : 127, "totalTickets" : 128 }, "read" : { "out" : 1, "available" : 127, "totalTickets" : 128 } } } $ top top - 01:56:47 up 224 days, 15:59, 1 user, load average: 21.80, 44.53, 49.24 Tasks: 613 total, 1 running, 612 sleeping, 0 stopped, 0 zombie Cpu(s): 2.2%us, 1.2%sy, 0.0%ni, 96.6%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st Mem: 198230432k total, 51392172k used, 146838260k free, 456184k buffers Swap: 10485756k total, 0k used, 10485756k free, 41107404k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7166 root 20 0 6031m 5.0g 11m S 178.1 2.7 18984:36 mongod $ free -m -t total used free shared buffers cached Mem: 193584 50182 143402 0 445 40145 -/+ buffers/cache: 9590 183993 Swap: 10239 0 10239 Total: 203824 50182 153642 [root@path-tmp-mongo011 profile]#