db.stats()

> db.stats()
{
        "db" : "test",
        "collections" : 8,
        "views" : 0,
        "objects" : 20026,
        "avgObjSize" : 35.25911315290123,
        "dataSize" : 706099,
        "storageSize" : 528384,
        "numExtents" : 0,
        "indexes" : 9,
        "indexSize" : 598016,
        "fsUsedSize" : 6759030784,
        "fsTotalSize" : 92871450624,
        "ok" : 1
}