Breaking the output into two sections might help explain things....
~~~~~~~~~~~~~~
> indexing index 'wiki_main'...
> collected 20082 docs, 22.4 MB
> sorted 3.7 Mhits, 100.0% done
> total 20082 docs, 22423950 bytes
> total 6.920 sec, 3240454.72 bytes/sec, 2902.02 docs/sec
~~~~~~~~~~~~~~
> indexing index 'wiki_incremental'...
> collected 0 docs, 0.0 MB
> total 0 ...



