filter kernel is large (ie. large amounts of scaling).
- qscale does not use multiple processors or cores (although different cores
can of course work on different images at the same time).
- - qscale does not make very good use of the extra eight SSE registers found
- on 64-bit x86-compatible (usually called amd64 or x86-64) machines. In
- fact, out of the box it might not even compile on such machines.
Finally, a word of advice: Even the fastest scaler can never be as fast as not
scaling. If you can do less work, or move it to a time where it is less user