我想知道如何调整数据库设置以提高性能。
是否有关于如何修改设置以及检查当前设置是否最佳的文档？
谢谢
CPU
$ lscpu | egrep 'Model name|Socket|Thread|NUMA|CPU\(s\)'
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 2
Socket(s): 1
NUMA node(s): 1
Model name: Intel(R) Xeon(R) CPU E5-2686 v4 @ 2.30GHz
NUMA node0 CPU(s): 0,1
RAM
$ free -h
total used free shared buffers cached
Mem: 14G 10G 4.3G 76K 76M 4.2G
-/+ buffers/cache: 6.3G 8.6G
Swap: 0B 0B 0B
数据库信息
db.runCommand( { serverStatus: 1, repl: 1 } )
{
"host" : "ip-10-3-0-**",
"version" : "4.0.10",
"process" : "mongod",
"pid" : NumberLong(2876),
"uptime" : 7080678,
"uptimeMillis" : NumberLong("7080678195"),
"uptimeEstimate" : NumberLong(7080678),
"localTime" : ISODate("2019-11-21T16:31:18.272Z"),
"asserts" : {
"regular" : 0,
"warning" : 0,
"msg" : 0,
"user" : 390,
"rollovers" : 0
},
"connections" : {
"current" : 142,
"available" : 51058,
"totalCreated" : 30276,
"active" : 2
},
"extra_info" : {
"note" : "fields vary by platform",
"page_faults" : 70
},
"freeMonitoring" : {
"state" : "enabled",
"retryIntervalSecs" : NumberLong(60),
"lastRunTime" : "2019-11-21T16:30:49.082+0000",
"registerErrors" : NumberLong(0),
"metricsErrors" : NumberLong(0)
},
"globalLock" : {
"totalTime" : NumberLong("7080678108000"),
"currentQueue" : {
"total" : 0,
"readers" : 0,
"writers" : 0
},
"activeClients" : {
"total" : 183,
"readers" : 0,
"writers" : 0
}
},
"locks" : {
"Global" : {
"acquireCount" : {
"r" : NumberLong("2270490755"),
"w" : NumberLong(13923421),
"W" : NumberLong(20)
},
"acquireWaitCount" : {
"r" : NumberLong(2),
"W" : NumberLong(1)
},
"timeAcquiringMicros" : {
"r" : NumberLong(94559),
"W" : NumberLong(3721)
}
},
"Database" : {
"acquireCount" : {
"r" : NumberLong(1958002541),
"w" : NumberLong(13213287),
"R" : NumberLong(8),
"W" : NumberLong(2041)
},
"acquireWaitCount" : {
"r" : NumberLong(5),
"w" : NumberLong(509),
"W" : NumberLong(553)
},
"timeAcquiringMicros" : {
"r" : NumberLong(21591),
"w" : NumberLong(4328973),
"W" : NumberLong(7395246)
}
},
"Collection" : {
"acquireCount" : {
"r" : NumberLong(1902428633),
"w" : NumberLong(13211987)
}
},
"oplog" : {
"acquireCount" : {
"r" : NumberLong(55575425),
"w" : NumberLong(58)
}
}
},
"logicalSessionRecordCache" : {
"activeSessionsCount" : 13,
"sessionsCollectionJobCount" : 23603,
"lastSessionsCollectionJobDurationMillis" : 18,
"lastSessionsCollectionJobTimestamp" : ISODate("2019-11-21T16:30:03.160Z"),
"lastSessionsCollectionJobEntriesRefreshed" : 25,
"lastSessionsCollectionJobEntriesEnded" : 1,
"lastSessionsCollectionJobCursorsClosed" : 0,
"transactionReaperJobCount" : 23603,
"lastTransactionReaperJobDurationMillis" : 6,
"lastTransactionReaperJobTimestamp" : ISODate("2019-11-21T16:30:03.157Z"),
"lastTransactionReaperJobEntriesCleanedUp" : 1
},
"network" : {
"bytesIn" : NumberLong("29953505953"),
"bytesOut" : NumberLong("52003517135"),
"physicalBytesIn" : NumberLong("23240368906"),
"physicalBytesOut" : NumberLong("40682951564"),
"numRequests" : NumberLong(66199009),
"compression" : {
"snappy" : {
"compressor" : {
"bytesIn" : NumberLong("28540070491"),
"bytesOut" : NumberLong("16795429270")
},
"decompressor" : {
"bytesIn" : NumberLong("15672880665"),
"bytesOut" : NumberLong("23939907798")
}
}
},
"serviceExecutorTaskStats" : {
"executor" : "passthrough",
"threadsRunning" : 142
}
},
"opLatencies" : {
"reads" : {
"latency" : NumberLong("2215676124710"),
"ops" : NumberLong(12605100)
},
"writes" : {
"latency" : NumberLong("5348114919"),
"ops" : NumberLong(5870693)
},
"commands" : {
"latency" : NumberLong("2446973989"),
"ops" : NumberLong(47723214)
},
"transactions" : {
"latency" : NumberLong(0),
"ops" : NumberLong(0)
}
},
"opReadConcernCounters" : {
"available" : NumberLong(0),
"linearizable" : NumberLong(0),
"local" : NumberLong(0),
"majority" : NumberLong(0),
"snapshot" : NumberLong(0),
"none" : NumberLong(1547227)
},
"opcounters" : {
"insert" : 15274649,
"query" : 1547227,
"update" : 5872104,
"delete" : 173652,
"getmore" : 11124026,
"command" : 47772895
},
"opcountersRepl" : {
"insert" : 9668,
"query" : 0,
"update" : 2451,
"delete" : 71,
"getmore" : 0,
"command" : 0
},
"repl" : {
"hosts" : [
"10.3.80.**:27017",
"10.3.0.**:27017",
"10.3.62.**:27017"
],
"setName" : "s0",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "10.3.0.**:27017",
"me" : "10.3.0.**:27017",
"electionId" : ObjectId("7fffffff0000000000000007"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1574353875, 2),
"t" : NumberLong(7)
},
"lastWriteDate" : ISODate("2019-11-21T16:31:15Z"),
"majorityOpTime" : {
"ts" : Timestamp(1574353875, 2),
"t" : NumberLong(7)
},
"majorityWriteDate" : ISODate("2019-11-21T16:31:15Z")
},
"replicationProgress" : [
{
"optime" : {
"ts" : Timestamp(1574353875, 2),
"term" : NumberLong(7)
},
"host" : "10.3.80.**:27017",
"memberId" : 1
},
{
"optime" : {
"ts" : Timestamp(1574353875, 2),
"term" : NumberLong(7)
},
"host" : "10.3.0.**:27017",
"memberId" : 2
},
{
"optime" : {
"ts" : Timestamp(1574353875, 2),
"term" : NumberLong(7)
},
"host" : "10.3.62.61:27017",
"memberId" : 3
}
],
"rbid" : 1
},
"storageEngine" : {
"name" : "wiredTiger",
"supportsCommittedReads" : true,
"supportsSnapshotReadConcern" : true,
"readOnly" : false,
"persistent" : true
},
"tcmalloc" : {
"generic" : {
"current_allocated_bytes" : NumberLong("5806015912"),
"heap_size" : NumberLong("7962251264")
},
"tcmalloc" : {
"pageheap_free_bytes" : 852889600,
"pageheap_unmapped_bytes" : 1040392192,
"max_total_thread_cache_bytes" : NumberLong(1073741824),
"current_total_thread_cache_bytes" : 38479952,
"total_free_bytes" : 262953560,
"central_cache_free_bytes" : 220818344,
"transfer_cache_free_bytes" : 3655264,
"thread_cache_free_bytes" : 38479952,
"aggressive_memory_decommit" : 0,
"pageheap_committed_bytes" : NumberLong("6921859072"),
"pageheap_scavenge_count" : 650885,
"pageheap_commit_count" : 1398392,
"pageheap_total_commit_bytes" : NumberLong("1633218453504"),
"pageheap_decommit_count" : 738136,
"pageheap_total_decommit_bytes" : NumberLong("1626296594432"),
"pageheap_reserve_count" : 1801,
"pageheap_total_reserve_bytes" : NumberLong("7962251264"),
"spinlock_total_delay_ns" : NumberLong("5671177894"),
"formattedString" : "------------------------------------------------\nMALLOC: 5806016488 ( 5537.0 MiB) Bytes in use by application\nMALLOC: + 852889600 ( 813.4 MiB) Bytes in page heap freelist\nMALLOC: + 220818344 ( 210.6 MiB) Bytes in central cache freelist\nMALLOC: + 3655264 ( 3.5 MiB) Bytes in transfer cache freelist\nMALLOC: + 38479376 ( 36.7 MiB) Bytes in thread cache freelists\nMALLOC: + 48783616 ( 46.5 MiB) Bytes in malloc metadata\nMALLOC: ------------\nMALLOC: = 6970642688 ( 6647.7 MiB) Actual memory used (physical + swap)\nMALLOC: + 1040392192 ( 992.2 MiB) Bytes released to OS (aka unmapped)\nMALLOC: ------------\nMALLOC: = 8011034880 ( 7639.9 MiB) Virtual address space used\nMALLOC:\nMALLOC: 435196 Spans in use\nMALLOC: 200 Thread heaps in use\nMALLOC: 4096 Tcmalloc page size\n------------------------------------------------\nCall ReleaseFreeMemory() to release freelist memory to the OS (via madvise()).\nBytes released to the OS take up virtual address space but no physical memory.\n"
}
},
"transactions" : {
"retriedCommandsCount" : NumberLong(56),
"retriedStatementsCount" : NumberLong(56),
"transactionsCollectionWriteCount" : NumberLong(5048993),
"currentActive" : NumberLong(0),
"currentInactive" : NumberLong(0),
"currentOpen" : NumberLong(0),
"totalAborted" : NumberLong(0),
"totalCommitted" : NumberLong(0),
"totalStarted" : NumberLong(0)
},
"transportSecurity" : {
"1.0" : NumberLong(0),
"1.1" : NumberLong(0),
"1.2" : NumberLong(0),
"1.3" : NumberLong(0),
"unknown" : NumberLong(0)
},
"wiredTiger" : {
"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" : 11272,
"blocks read" : 685129,
"blocks written" : 4031443,
"bytes read" : 3191664640,
"bytes written" : 37255380992,
"bytes written for checkpoint" : 35048415232,
"mapped blocks read" : 0,
"mapped bytes read" : 0
},
"cache" : {
"application threads page read from disk to cache count" : 45445,
"application threads page read from disk to cache time (usecs)" : 5222318,
"application threads page write from cache to disk count" : 2538144,
"application threads page write from cache to disk time (usecs)" : 100726874,
"bytes belonging to page images in the cache" : 4136571589,
"bytes belonging to the cache overflow table in the cache" : 182,
"bytes currently in the cache" : 5934061222,
"bytes dirty in the cache cumulative" : 1090081699698,
"bytes not belonging to page images in the cache" : 1797489633,
"bytes read into cache" : 2148484516,
"bytes written from cache" : 47853403441,
"cache overflow cursor application thread wait time (usecs)" : 0,
"cache overflow cursor internal thread wait time (usecs)" : 0,
"cache overflow score" : 0,
"cache overflow table entries" : 0,
"cache overflow table insert calls" : 0,
"cache overflow table remove calls" : 0,
"checkpoint blocked page eviction" : 2,
"eviction calls to get a page" : 456487,
"eviction calls to get a page found queue empty" : 397157,
"eviction calls to get a page found queue empty after locking" : 687,
"eviction currently operating in aggressive mode" : 0,
"eviction empty score" : 0,
"eviction passes of a file" : 268732,
"eviction server candidate queue empty when topping up" : 675,
"eviction server candidate queue not empty when topping up" : 804,
"eviction server evicting pages" : 0,
"eviction server slept, because we did not make progress with eviction" : 81597,
"eviction server unable to reach eviction goal" : 0,
"eviction state" : 32,
"eviction walk target pages histogram - 0-9" : 267742,
"eviction walk target pages histogram - 10-31" : 424,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 93,
"eviction walk target pages histogram - 64-128" : 473,
"eviction walks abandoned" : 14889,
"eviction walks gave up because they restarted their walk twice" : 232897,
"eviction walks gave up because they saw too many pages and found no candidates" : 15832,
"eviction walks gave up because they saw too many pages and found too few candidates" : 101,
"eviction walks reached end of tree" : 490268,
"eviction walks started from root of tree" : 262985,
"eviction walks started from saved location in tree" : 5747,
"eviction worker thread active" : 4,
"eviction worker thread created" : 0,
"eviction worker thread evicting pages" : 58611,
"eviction worker thread removed" : 0,
"eviction worker thread stable number" : 0,
"failed eviction of pages that exceeded the in-memory maximum count" : 2906,
"failed eviction of pages that exceeded the in-memory maximum time (usecs)" : 4341,
"files with active eviction walks" : 0,
"files with new eviction walks started" : 257371,
"force re-tuning of eviction workers once in a while" : 0,
"hazard pointer blocked page eviction" : 1794,
"hazard pointer check calls" : 69369,
"hazard pointer check entries walked" : 2623918,
"hazard pointer maximum array length" : 59,
"in-memory page passed criteria to be split" : 6259,
"in-memory page splits" : 2172,
"internal pages evicted" : 4156,
"internal pages split during eviction" : 20,
"leaf pages split during eviction" : 2658,
"maximum bytes configured" : 7476346880,
"maximum page size at eviction" : 0,
"modified pages evicted" : 11044,
"modified pages evicted by application threads" : 0,
"operations timed out waiting for space in cache" : 0,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring cache overflow records" : 0,
"pages currently held in the cache" : 121858,
"pages evicted because they exceeded the in-memory maximum count" : 2749,
"pages evicted because they exceeded the in-memory maximum time (usecs)" : 1721371,
"pages evicted because they had chains of deleted items count" : 4960,
"pages evicted because they had chains of deleted items time (usecs)" : 472591,
"pages evicted by application threads" : 0,
"pages queued for eviction" : 78454,
"pages queued for urgent eviction" : 1264,
"pages queued for urgent eviction during walk" : 606,
"pages read into cache" : 46246,
"pages read into cache after truncate" : 1376,
"pages read into cache after truncate in prepare state" : 0,
"pages read into cache requiring cache overflow entries" : 0,
"pages read into cache requiring cache overflow for checkpoint" : 0,
"pages read into cache skipping older cache overflow entries" : 0,
"pages read into cache with skipped cache overflow entries needed later" : 0,
"pages read into cache with skipped cache overflow entries needed later by checkpoint" : 0,
"pages requested from the cache" : 117658575637,
"pages seen by eviction walk" : 3351222,
"pages selected for eviction unable to be evicted" : 3113,
"pages walked for eviction" : 5655202,
"pages written from cache" : 2752326,
"pages written requiring in-memory restoration" : 1297,
"percentage overhead" : 8,
"tracked bytes belonging to internal pages in the cache" : 18074503,
"tracked bytes belonging to leaf pages in the cache" : 5915986719,
"tracked dirty bytes in the cache" : 4002055,
"tracked dirty pages in the cache" : 13,
"unmodified pages evicted" : 53315
},
"capacity" : {
"background fsync file handles considered" : 0,
"background fsync file handles synced" : 0,
"background fsync time (msecs)" : 0,
"threshold to call fsync" : 0,
"throttled bytes read" : 0,
"throttled bytes written for checkpoint" : 0,
"throttled bytes written for eviction" : 0,
"throttled bytes written for log" : 0,
"throttled bytes written total" : 0,
"time waiting due to total capacity (usecs)" : 0,
"time waiting during checkpoint (usecs)" : 0,
"time waiting during eviction (usecs)" : 0,
"time waiting during logging (usecs)" : 0,
"time waiting during read (usecs)" : 0
},
"connection" : {
"auto adjusting condition resets" : 2265374,
"auto adjusting condition wait calls" : 45844599,
"detected system time went backwards" : 0,
"files currently open" : 368,
"memory allocations" : 993391995,
"memory frees" : 984677910,
"memory re-allocations" : 165217512,
"pthread mutex condition wait calls" : 121181755,
"pthread mutex shared lock read-lock calls" : 1978821693,
"pthread mutex shared lock write-lock calls" : 82484974,
"total fsync I/Os" : 6593134,
"total read I/Os" : 924233,
"total write I/Os" : 9866649
},
"cursor" : {
"cached cursor count" : 494,
"cursor close calls that result in cache" : 61009274,
"cursor create calls" : 14367207,
"cursor insert calls" : 63580327,
"cursor modify calls" : 1796784,
"cursor next calls" : 204385588679,
"cursor operation restarted" : 14835,
"cursor prev calls" : 17970,
"cursor remove calls" : 2821892,
"cursor reserve calls" : 0,
"cursor reset calls" : 2320042889,
"cursor search calls" : 57966138156,
"cursor search near calls" : 1605149499,
"cursor sweep buckets" : 101542918,
"cursor sweep cursors closed" : 1302,
"cursor sweep cursors examined" : 6431248,
"cursor sweeps" : 16923590,
"cursor update calls" : 0,
"cursors reused from cache" : 60627612,
"open cursor count" : 26,
"truncate calls" : 70
},
...
"mem" : {
"bits" : 64,
"resident" : 6608,
"virtual" : 9108,
"supported" : true,
"mapped" : 0,
"mappedWithJournal" : 0
},
"metrics" : {
"commands" : {
"<UNKNOWN>" : NumberLong(0),
"_cloneCatalogData" : {
"failed" : NumberLong(0),
"total" : NumberLong(0)
},
"_cloneCollectionOptionsFromPrimaryShard" : {
"failed" : NumberLong(0),
"total" : NumberLong(0)
},
...
}