Output of my high lockTime and high page_faults value also - mongodb

Question

we are using mongodb for our collections .
This is my stats of my development server .
My concerns are that there is high lockTime on my development server and also there are high page_faults value also .
Please tell me how can we resolve this ??
PRIMARY> db.serverStatus()
{
"host" : "ubsc-aio:27018",
"version" : "2.0.4",
"process" : "mongod",
"uptime" : 3278692,
"uptimeEstimate" : 3098346,
"localTime" : ISODate("2013-08-30T10:55:06.997Z"),
"globalLock" : {
"totalTime" : 3278692551767,
"lockTime" : 139516930214,
"ratio" : 0.0425526114483682,
"currentQueue" : {
"total" : 0,
"readers" : 0,
"writers" : 0
},
"activeClients" : {
"total" : 1,
"readers" : 1,
"writers" : 0
}
},
"mem" : {
"bits" : 64,
"resident" : 2009,
"virtual" : 23455,
"supported" : true,
"mapped" : 11420,
"mappedWithJournal" : 22840
},
"connections" : {
"current" : 162,
"available" : 7838
},
"extra_info" : {
"note" : "fields vary by platform",
"heap_usage_bytes" : 3645040,
"page_faults" : 4147570
},
"indexCounters" : {
"btree" : {
"accesses" : 902898,
"hits" : 901095,
"misses" : 1803,
"resets" : 0,
"missRatio" : 0.0019969033046922245
}
},
"backgroundFlushing" : {
"flushes" : 54639,
"total_ms" : 36709498,
"average_ms" : 671.8552316111203,
"last_ms" : 81,
"last_finished" : ISODate("2013-08-30T10:54:43.013Z")
},
"cursors" : {
"totalOpen" : 1,
"clientCursors_size" : 1,
"timedOut" : 7
},
"network" : {
"bytesIn" : 77779294441,
"bytesOut" : 314231714161,
"numRequests" : 189861092
},
"repl" : {
"setName" : "at",
"ismaster" : true,
"secondary" : false,
"hosts" : [
"localhost:27018",
"localhost:27017"
],
"arbiters" : [
"localhost:27019"
],
"primary" : "localhost:27018",
"me" : "localhost:27018"
},
"opcounters" : {
"insert" : 303294,
"query" : 133717078,
"update" : 59123588,
"delete" : 234256,
"getmore" : 48037783,
"command" : 125805489
},
"asserts" : {
"regular" : 0,
"warning" : 0,
"msg" : 0,
"user" : 16576,
"rollovers" : 0
},
"writeBacksQueued" : false,
"dur" : {
"commits" : 28,
"journaledMB" : 0.08192,
"writeToDataFilesMB" : 0.116123,
"compression" : 0.6743163821345669,
"commitsInWriteLock" : 0,
"earlyCommits" : 0,
"timeMs" : {
"dt" : 3000,
"prepLogBuffer" : 0,
"writeToJournal" : 25,
"writeToDataFiles" : 2,
"remapPrivateView" : 1
}
},
"ok" : 1
}