# with F_RDAHEAD, 0   F_NOCACHE, 1

$ ./run-readtest.sh -f 10 -d /Volumes/OSXext/disktest/ 65536 131072 4096000
# Building files for test...
# Blocksize 65536
# Min: 8.9910 MB/sec Avg: 9.4645 MB/sec  || Max: 0.890 sec
# Max Track count: 51 @ 48000SPS
# Sus Track count: 49 @ 48000SPS
65536 8.9910 9.4645 0.8898 0.00912
# Blocksize 131072
# Min: 18.4123 MB/sec Avg: 18.6530 MB/sec  || Max: 0.869 sec
# Max Track count: 101 @ 48000SPS
# Sus Track count: 100 @ 48000SPS
131072 18.4123 18.6530 0.8690 0.00828
# Blocksize 4096000
# Min: 36.2305 MB/sec Avg: 36.6500 MB/sec  || Max: 13.801 sec
# Max Track count: 200 @ 48000SPS
# Sus Track count: 197 @ 48000SPS
4096000 36.2305 36.6500 13.8005 0.22336

# F_NOCACHE, 1  # readahed unset

$ ./run-readtest.sh -f 10 -d /Volumes/OSXext/disktest/ 65536 131072 4096000
# Building files for test...
# Blocksize 65536
# Min: 8.8816 MB/sec Avg: 9.4494 MB/sec  || Max: 0.901 sec
# Max Track count: 51 @ 48000SPS
# Sus Track count: 48 @ 48000SPS
65536 8.8816 9.4494 0.9007 0.01125
# Blocksize 131072
# Min: 17.1142 MB/sec Avg: 18.6079 MB/sec  || Max: 0.935 sec
# Max Track count: 101 @ 48000SPS
# Sus Track count: 93 @ 48000SPS
131072 17.1142 18.6079 0.9349 0.01519
# Blocksize 4096000
# Min: 37.2742 MB/sec Avg: 37.3941 MB/sec  || Max: 13.414 sec
# Max Track count: 204 @ 48000SPS
# Sus Track count: 203 @ 48000SPS
4096000 37.2742 37.3941 13.4141 0.06081