Mongodb的基本性能统计工具简单记录
1.Mongostat
查看某组运行中的MongoDB实例的统计信息;
[root@Mongodb ~]# /Apps/mongo/bin/mongostat
connected to: 127.0.0.1
insert query update delete getmore command flushes mapped vsize res faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:41
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:42
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:43
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:44
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:45
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:46
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:47
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:48
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:49
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:50
insert query update delete getmore command flushes mapped vsize res faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:51
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:52
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:53
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:54
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:55
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:56
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:57
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:58
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:11:59
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:00
insert query update delete getmore command flushes mapped vsize res faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:01
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:02
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:03
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:04
0 1 0 0 0 2 0 32m 126m 21m 0 0 0 0|0 0|0 187b 1k 2 00:12:05
0 1 0 0 0 2 0 32m 126m 21m 0 0 0 0|0 0|0 187b 1k 2 00:12:06
0 2 0 0 0 3 0 32m 126m 21m 0 0 0 0|0 0|0 312b 1k 2 00:12:07
0 2 0 0 0 3 0 32m 126m 21m 0 0 0 0|0 0|0 312b 1k 2 00:12:08
0 2 0 0 0 3 0 32m 126m 21m 0 0 0 0|0 0|0 312b 1k 2 00:12:09
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:10
insert query update delete getmore command flushes mapped vsize res faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:11
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:12
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:13
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:14
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:15
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:16
0 0 0 0 0 1 0 32m 126m 21m 0 0 0 0|0 0|0 62b 1k 2 00:12:17
[root@Mongodb ~]#
2.db.serverStatus
这个命令是最常用也是最基础的查看实例运行状态的命令之一;
> db.serverStatus()
{
"host" : "Mongodb",
"version" : "1.8.1",
"process" : "mongod",
"uptime" : 23835,
"uptimeEstimate" : 19085,
"localTime" : ISODate("2013-06-04T16:13:54.759Z"),
"globalLock" : {
"totalTime" : 23835266950,
"lockTime" : 1406729,
"ratio" : 0.000059018806164451204,
"currentQueue" : {
"total" : 0,
"readers" : 0,
"writers" : 0
},
"activeClients" : {
"total" : 0,
"readers" : 0,
"writers" : 0
}
},
"mem" : {
"bits" : 32,
"resident" : 21,
"virtual" : 126,
"supported" : true,
"mapped" : 32
},
"connections" : {
"current" : 1,
"available" : 818
},
"extra_info" : {
"note" : "fields vary by platform",
"heap_usage_bytes" : 291432,
"page_faults" : 88
},
"indexCounters" : {
"btree" : {
"accesses" : 1,
"hits" : 1,
"misses" : 0,
"resets" : 0,
"missRatio" : 0
}
},
"backgroundFlushing" : {
"flushes" : 397,
"total_ms" : 75,
"average_ms" : 0.1889168765743073,
"last_ms" : 0,
"last_finished" : ISODate("2013-06-04T16:13:40.114Z")
},
"cursors" : {
"totalOpen" : 13,
"clientCursors_size" : 13,
"timedOut" : 5
},
"network" : {
"bytesIn" : 13775,
"bytesOut" : 61049,
"numRequests" : 203
},
"opcounters" : {
"insert" : 21,
"query" : 55,
"update" : 1,
"delete" : 0,
"getmore" : 0,
"command" : 127
},
"asserts" : {
"regular" : 0,
"warning" : 0,
"msg" : 0,
"user" : 1,
"rollovers" : 0
},
"writeBacksQueued" : false,
"ok" : 1
}
>
3.db.stats()
db.stats 查看数据库状态信息;
> db.stats()
{
"db" : "test",
"collections" : 4,
"objects" : 28,
"avgObjSize" : 43.142857142857146,
"dataSize" : 1208,
"storageSize" : 10496,
"numExtents" : 4,
"indexes" : 2,
"indexSize" : 16384,
"fileSize" : 50331648,
"ok" : 1
}
>
4.mongosniff
此工具可以从底层监控到底有哪些命令发送给了MongoDB去执行，从中就可以进行分析;
[root@Mongodb ~]# /Apps/mongo/bin/mongosniff --source NET lo
sniffing... 27017
127.0.0.1:42168 -->> 127.0.0.1:27017 test.things 45 bytes id:8cee6609 2364433929
query: {} ntoreturn: 3 ntoskip: 2
127.0.0.1:27017 <<-- 127.0.0.1:42168 Mx疃?n# 168 bytes id:80aca2a2 2158797474 - 2364433929
reply n:3 cursorId: 2553044974605072461
{ _id: ObjectId('51adf11685702b41681359ae'), x: 4.0, j: 1.0 }
127.0.0.1:42168 -->> 127.0.0.1:27017 admin.$cmd 80 bytes id:8cee660a 2364433930
query: { replSetGetStatus: 1, forShell: 1 } ntoreturn: 1 ntoskip: 0
127.0.0.1:27017 <<-- 127.0.0.1:42168 92 bytes id:80aca2a3 2158797475 - 2364433930
reply n:1 cursorId: 0
{ errmsg: "not running with --replSet", ok: 0.0 }
^[[A127.0.0.1:42168 -->> 127.0.0.1:27017 test.things 45 bytes id:8cee660b 2364433931
query: {} ntoreturn: 3 ntoskip: 2
127.0.0.1:27017 <<-- 127.0.0.1:42168 w疃x\DV 168 bytes id:80aca2a4 2158797476 - 2364433931
reply n:3 cursorId: 6216195059213048439
{ _id: ObjectId('51adf11685702b41681359ae'), x: 4.0, j: 1.0 }
127.0.0.1:42168 -->> 127.0.0.1:27017 admin.$cmd 80 bytes id:8cee660c 2364433932
query: { replSetGetStatus: 1, forShell: 1 } ntoreturn: 1 ntoskip: 0
127.0.0.1:27017 <<-- 127.0.0.1:42168 92 bytes id:80aca2a5 2158797477 - 2364433932
reply n:1 cursorId: 0
{ errmsg: "not running with --replSet", ok: 0.0 }
^[[?1;2c127.0.0.1:42168 -->> 127.0.0.1:27017 test.$cmd 82 bytes id:8cee660d 2364433933
query: { count: "c1", query: {}, fields: {} } ntoreturn: -1 ntoskip: 0
127.0.0.1:27017 <<-- 127.0.0.1:42168 64 bytes id:80aca2a6 2158797478 - 2364433933
reply n:1 cursorId: 0
{ n: 1.0, ok: 1.0 }