The following is a demonstration of the dnlcstat command.
Here we run dnlcstat with no options. It prints a line every second,
# dnlcstat
dnlc %hit hit miss
0 0 0
0 0 0
93 95 7
89 1920 231
89 2130 243
91 2358 232
92 1476 124
92 1953 159
94 2416 134
94 1962 114
95 2113 101
97 1969 54
98 1489 26
41 564 786
40 622 913
35 520 952
27 937 2503
22 1696 5806
22 955 3281
21 1377 5059
31 2043 4516
22 1423 4968
13 550 3438
2 95 3810
0 58 6410
4 223 4433
4 198 4491
7 339 4383
In another window, a "find /" was run. We can see the DNLC activity above,
initially there are high hit rates in the DNLC - over 90%. Eventually
the find command exhausts the DNLC, and the hit rate drops to below 10%.