B benchmarking on 5M-names

I=20

NAIVE
	N=500 	MB/sec: 0.0111929
	N=1000 	MB/sec: 0.00790026
	N=2000 	MB/sec: 0.00455216

MULTIFAST
	N=500 	MB/sec: 0.0217345
	N=1000 	MB/sec: 0.0218798
	N=2000 	MB/sec: 0.0215727

With N=5000 or bigger multifast returns error status