MongoDB collection stats.js

> db.stats()
{
	"collections" : 31,
	"objects" : 33273261,
	"avgObjSize" : 276.750695520947,
	"dataSize" : 9208398124,
	"storageSize" : 10635470336,
	"numExtents" : 242,
	"indexes" : 58,
	"indexSize" : 10991725824,
	"fileSize" : 25691160576,
	"ok" : 1
}

// db.url and db.link are the two collections 
// that I've seen "write lock" X mark from the 
// http interface. 
> db.url.stats()
{
	"ns" : "trunkly.url",
	"count" : 8026219,
	"size" : 2198682488,
	"avgObjSize" : 273.93751503665675,
	"storageSize" : 2739354880,
	"numExtents" : 28,
	"nindexes" : 3,
	"lastExtentSize" : 463082496,
	"paddingFactor" : 1.7399999999955535,
	"flags" : 1,
	"totalIndexSize" : 2504198976,
	"indexSizes" : {
		"_id_" : 957588416,
		"tags.tag_1_uc_-1" : 767083456,
		"tags.tag_1_dtl_-1" : 779527104
	},
	"ok" : 1
}
> db.link.stats()
{
	"ns" : "trunkly.link",
	"count" : 11018081,
	"size" : 4445501824,
	"avgObjSize" : 403.4733293392924,
	"storageSize" : 4762098432,
	"numExtents" : 31,
	"nindexes" : 5,
	"lastExtentSize" : 800206080,
	"paddingFactor" : 1.5899999999971621,
	"flags" : 1,
	"totalIndexSize" : 5337117376,
	"indexSizes" : {
		"_id_" : 1473086400,
		"u_1_s_1_dt_-1" : 841008064,
		"u_1_dt_-1" : 450839488,
		"u_1_e_1_dt_-1" : 1153614784,
		"lh_1_dt_-1" : 1418568640
	},
	"ok" : 1
}

// db.schedule is heavily updated. 
// The modification usually involves timestamp refresh.  
> db.schedule.stats()
{
	"ns" : "trunkly.schedule",
	"count" : 18636,
	"size" : 671152,
	"avgObjSize" : 36.013736853402015,
	"storageSize" : 2793472,
	"numExtents" : 5,
	"nindexes" : 2,
	"lastExtentSize" : 2097152,
	"paddingFactor" : 1,
	"flags" : 1,
	"totalIndexSize" : 1671168,
	"indexSizes" : {
		"_id_" : 729088,
		"n_-1" : 942080
	},
	"ok" : 1
}

// db.link, db.url and db.source are the 
// most heavily read collection. 
> db.source.stats()
{
	"ns" : "trunkly.source",
	"count" : 19679,
	"size" : 18465300,
	"avgObjSize" : 938.3251181462473,
	"storageSize" : 34590976,
	"numExtents" : 4,
	"nindexes" : 2,
	"lastExtentSize" : 32914688,
	"paddingFactor" : 1.579999999999991,
	"flags" : 1,
	"totalIndexSize" : 1990656,
	"indexSizes" : {
		"_id_" : 770048,
		"u_1_s_1_i_1" : 1220608
	},
	"ok" : 1
}

// db.timeline and db.url.comments 
// have lots of insertions. 
db.timeline.stats()
{
	"ns" : "trunkly.timeline",
	"count" : 9679549,
	"size" : 1929403956,
	"avgObjSize" : 199.32787736288125,
	"storageSize" : 2276272384,
	"numExtents" : 27,
	"nindexes" : 4,
	"lastExtentSize" : 385902080,
	"paddingFactor" : 1.009999999999966,
	"flags" : 1,
	"totalIndexSize" : 2592395008,
	"indexSizes" : {
		"_id_" : 372499392,
		"u_1_dt_-1" : 397968320,
		"p_1_l_1" : 936010688,
		"u_1_e_1_dt_-1" : 885916608
	},
	"ok" : 1
}

> db.url.comments.stats()
{
	"ns" : "trunkly.url.comments",
	"count" : 113945,
	"size" : 62748940,
	"avgObjSize" : 550.6949844223091,
	"storageSize" : 81710848,
	"numExtents" : 7,
	"nindexes" : 1,
	"lastExtentSize" : 25002240,
	"paddingFactor" : 1.009999999999998,
	"flags" : 1,
	"totalIndexSize" : 10207232,
	"indexSizes" : {
		"_id_" : 10207232
	},
	"ok" : 1
}