(업그레이드 참조 : http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/?_ga=1.222986259.926585648.1423043948)
3.x대의 새로운 스토리지 엔진 WiredTiger를 사용해보려고 한것이 이유라서...
일단 기존데이터 파일은 사용하지 못한다.
꼭 옮겨야 한다면 dump뜨고 데이터파일 지우고 다시 넣어야 한다.
난 과감하게 기존데이터 파일을 삭제했다.
1. service mongod stop
2. vi /etc/mongod.conf
3. engine: wiredTiger 를 추가해준다.
4. service mongod start
start를 했는데 안올라온다면 거의 기존 데이터가 남아있어서일꺼다.
8배가 빨라지고 80% 압축이 어쩌고...
얼마나 좋아졌는지 써보자.
| storageEngine | { "name": "wiredTiger" } |
| wiredTiger | { "uri": "statistics:", "LSM": { "sleep for LSM checkpoint throttle": NumberInt(0), "sleep for LSM merge throttle": NumberInt(0), "rows merged in an LSM tree": NumberInt(0), "application work units currently queued": NumberInt(0), "merge work units currently queued": NumberInt(0), "tree queue hit maximum": NumberInt(0), "switch work units currently queued": NumberInt(0), "tree maintenance operations scheduled": NumberInt(0), "tree maintenance operations discarded": NumberInt(0), "tree maintenance operations executed": NumberInt(0) }, "async": { "number of allocation state races": NumberInt(0), "number of operation slots viewed for allocation":NumberInt(0), "current work queue length": NumberInt(0), "number of flush calls": NumberInt(0), "number of times operation allocation failed": NumberInt(0), "maximum work queue length": NumberInt(0), "number of times worker found no work": NumberInt(0), "total allocations": NumberInt(0), "total compact calls": NumberInt(0), "total insert calls": NumberInt(0), "total remove calls": NumberInt(0), "total search calls": NumberInt(0), "total update calls": NumberInt(0) }, "block-manager": { "mapped bytes read": NumberInt(0), "bytes read": NumberInt(49152), "bytes written": NumberInt(368640), "mapped blocks read": NumberInt(0), "blocks pre-loaded": NumberInt(0), "blocks read": NumberInt(12), "blocks written": NumberInt(81) }, "cache": { "tracked dirty bytes in the cache": NumberInt(0), "tracked bytes belonging to internal pages in the cache":NumberInt(2827), "bytes currently in the cache": NumberInt(38408), "tracked bytes belonging to leaf pages in the cache":3221222645, "maximum bytes configured": 3221225472, "tracked bytes belonging to overflow pages in the cache":NumberInt(0), "bytes read into cache": NumberInt(0), "bytes written from cache": NumberInt(57112), "pages evicted by application threads": NumberInt(0), "checkpoint blocked page eviction": NumberInt(0), "unmodified pages evicted": NumberInt(0), "page split during eviction deepened the tree": NumberInt(0), "modified pages evicted": NumberInt(0), "pages selected for eviction unable to be evicted":NumberInt(0), "pages evicted because they exceeded the in-memory maximum":NumberInt(0), "pages evicted because they had chains of deleted items":NumberInt(0), "failed eviction of pages that exceeded the in-memory maximum": NumberInt(0), "hazard pointer blocked page eviction": NumberInt(0), "internal pages evicted": NumberInt(0), "maximum page size at eviction": NumberInt(0), "eviction server candidate queue empty when topping up":NumberInt(0), "eviction server candidate queue not empty when topping up":NumberInt(0), "eviction server evicting pages": NumberInt(0), "eviction server populating queue, but not evicting pages":NumberInt(0), "eviction server unable to reach eviction goal": NumberInt(0), "pages split during eviction": NumberInt(0), "pages walked for eviction": NumberInt(0), "eviction worker thread evicting pages": NumberInt(0), "in-memory page splits": NumberInt(0), "percentage overhead": NumberInt(8), "tracked dirty pages in the cache": NumberInt(0), "pages currently held in the cache": NumberInt(22), "pages read into cache": NumberInt(0), "pages written from cache": NumberInt(46) }, "connection": { "pthread mutex condition wait calls": NumberInt(7483), "files currently open": NumberInt(14), "memory allocations": NumberInt(9273), "memory frees": NumberInt(5106), "memory re-allocations": NumberInt(283), "total read I/Os": NumberInt(24), "pthread mutex shared lock read-lock calls": NumberInt(1013), "pthread mutex shared lock write-lock calls": NumberInt(362), "total write I/Os": NumberInt(137) }, "cursor": { "cursor create calls": NumberInt(747), "cursor insert calls": NumberInt(82), "cursor next calls": NumberInt(36), "cursor prev calls": NumberInt(28), "cursor remove calls": NumberInt(0), "cursor reset calls": NumberInt(336), "cursor search calls": NumberInt(766), "cursor search near calls": NumberInt(109), "cursor update calls": NumberInt(0) }, "data-handle": { "connection dhandles swept": NumberInt(0), "connection candidate referenced": NumberInt(0), "connection sweeps": NumberInt(33), "connection time-of-death sets": NumberInt(9), "session dhandles swept": NumberInt(0), "session sweep attempts": NumberInt(86) }, "log": { "log buffer size increases": NumberInt(0), "total log buffer size": NumberInt(1048576), "log bytes of payload data": NumberInt(15699), "log bytes written": NumberInt(18432), "yields waiting for previous log file close": NumberInt(0), "total size of compressed records": NumberInt(12585), "total in-memory size of compressed records":NumberInt(29812), "log records too small to compress": NumberInt(7), "log records not compressed": NumberInt(15), "log records compressed": NumberInt(15), "maximum log file size": NumberInt(104857600), "pre-allocated log files prepared": NumberInt(1), "number of pre-allocated log files to create": NumberInt(1), "pre-allocated log files used": NumberInt(0), "log read operations": NumberInt(0), "log release advances write LSN": NumberInt(37), "records processed by log scan": NumberInt(0), "log scan records requiring two reads": NumberInt(0), "log scan operations": NumberInt(0), "consolidated slot closures": NumberInt(0), "logging bytes consolidated": NumberInt(0), "consolidated slot joins": NumberInt(0), "consolidated slot join races": NumberInt(0), "slots selected for switching that were unavailable":NumberInt(0), "record size exceeded maximum": NumberInt(0), "failed to find a slot large enough for record": NumberInt(0), "consolidated slot join transitions": NumberInt(0), "log sync operations": NumberInt(14), "log sync_dir operations": NumberInt(1), "log server thread advances write LSN": NumberInt(0), "log write operations": NumberInt(37) }, "reconciliation": { "page reconciliation calls": NumberInt(46), "page reconciliation calls for eviction": NumberInt(0), "split bytes currently awaiting free": NumberInt(0), "split objects currently awaiting free": NumberInt(0) }, "session": { "open cursor count": NumberInt(132), "open session count": NumberInt(75) }, "thread-yield": { "page acquire busy blocked": NumberInt(0), "page acquire eviction blocked": NumberInt(0), "page acquire locked blocked": NumberInt(0), "page acquire read blocked": NumberInt(0), "page acquire time sleeping (usecs)": NumberInt(0) }, "transaction": { "transaction begins": NumberInt(94), "transaction checkpoints": NumberInt(5), "transaction checkpoint generation": NumberInt(5), "transaction checkpoint currently running": NumberInt(0), "transaction checkpoint max time (msecs)": NumberInt(20), "transaction checkpoint min time (msecs)": NumberInt(7), "transaction checkpoint most recent time (msecs)":NumberInt(7), "transaction checkpoint total time (msecs)": NumberInt(70), "transactions committed": NumberInt(11), "transaction failures due to cache overflow": NumberInt(0), "transaction range of IDs currently pinned by a checkpoint":NumberInt(0), "transaction range of IDs currently pinned": NumberInt(1), "transactions rolled back": NumberInt(82) }, "concurrentTransactions": { "write": { "out": NumberInt(0), "available": NumberInt(128), "totalTickets": NumberInt(128) }, "read": { "out": NumberInt(1), "available": NumberInt(127), "totalTickets": NumberInt(128) } } } |
