xor
        	longread	1-byte		4096-block
noncached	16.330		5.241		5.431
   cached	184.446		8.824		326.961

zeon
        	longread	1-byte		4096-block	1M-block
noncached	39.754		5.838		15.535		24.955
   cached	537.066		8.641		968.662		674.419