ReadByte    10000000    55 sec  =   181818.(18) bytes/sec 
WriteByte   10000000    62 sec  =   161290.323  bytes/sec

WriteSBuf   10000       28 sec  =   357.143     frames/sec   
ReadSBuf    10000       12 sec  =   833.(33)    frames/sec   

1 frame = 512 bytes