Latency Detail graph added to the MongoDB Instance Summary dashboard

        "opLatencies" : {
                "reads" : {
                        "latency" : NumberLong(0),
                        "ops" : NumberLong(0)
                },
                "writes" : {
                        "latency" : NumberLong(0),
                        "ops" : NumberLong(0)
                },
                "commands" : {
                        "latency" : NumberLong(711934),
                        "ops" : NumberLong(1405)
                }