profiler2.js

{
  "ts" : ISODate("2012-09-14T16:34:00.010Z"),   // date it occurred
	"op" : "query",				// the operation type
	"ns" : "game.players",			// the db and collection 
	"query" : { "total_games" : 1000 },	// query document
	"ntoreturn" : 0,			// # docs returned with limit()
	"ntoskip" : 0,				// # of docs to skip()			
	"nscanned" : 959967,			// number of docs scanned
	"keyUpdates" : 0,			// updates of secondary indexes
	"numYield" : 1,				// # of times yields took place
	"lockStats" : { ... },			// subdoc of lock stats
	"nreturned" : 0,			// # docs actually returned
	"responseLength" : 20,			// size of doc
	"millis" : 859,				// how long it took
	"client" : "127.0.0.1",			// client asked for it
	"user" : ""				// the user asking for it
}