=== libtorrent-0001: file_storage::get_or_add_path() is called once per file added to a torrent. ===
N=100   k=100  : defective=0.092ms  fixed=0.004ms  speedup=24.7x
N=500   k=500  : defective=2.657ms  fixed=0.023ms  speedup=116.8x
N=1000  k=1000 : defective=9.456ms  fixed=0.068ms  speedup=139.5x
N=2000  k=2000 : defective=38.305ms  fixed=0.100ms  speedup=384.3x

