Does precision influence performance with MongoDB GeoSpatial Queries?

Question

Consider a query of:

db.stuff.find({ Location:
   { $geoWithin:
      { $centerSphere: [ [ -73.93414657, 40.82302903 ], 5 / 3963.2 ] } } })

Would it be reasonable to expect a performance boost if the coordinates were less precise? If so, by how much?

db.stuff.find({ Location:
   { $geoWithin:
      { $centerSphere: [ [ -73.93414, 40.82302 ], 5 / 3963.2 ] } } })

Bonus points if you have links to documentation on performance tuning mongo geospatial queries.

Answer 1

Unfortunately no.

And you can test this yourself by looking at $executionStats. Be aware that you should change the coordinated on every call to avoid metric distortion due to caching.

More info about mongodb's spatial B-tree indexing here.