I have roughly 3.2 million documents and have created text index on one filed. It took me about an hour to complete index.

I notice that search is very very slow. I'm executing following statement.

db.messages.explain("executionStats").find({$text:{$search:"Unfortunately"}},{"body":1}).limit(2)

and it's taking me roughly 2 minutes to return result which is not acceptable for any serious use. I have attached full explain output for your review.

I'm wondering if there is any way to improve it's performance?