… analyses as there are many possible ways query can be optimized. There is however one extremely helpful metric which you can… count(*) from sbtest group by k; This only sends 2 rows while scanning 10 million, while we can’t really optimize this… or no” answer but rather helps to understand how much optimization is possible. For example I might have query which uses…
Post: Sphinx search performance optimization: multi-threaded search
… some CPU-intensive operations such as ranking, ordering or even COUNT with GROUP BY and if data nodes return large amounts…

