few commands to dig into mongodb profiling data

mongo-profile.js

db.setProfilingLevel(2);
db.getProfilingLevel();
db.getProfilingStatus();

//to see output without $cmd (command) operations
db.system.profile.find( function() { return this.info.indexOf('$cmd')<0; } );

//To view operations for a particular collection
db.system.profile.find( { info: /test.foo/ } );

//To view operations slower than a certain number of milliseconds
db.system.profile.find( { millis : { $gt : 5 } } );