Commands
========
$ make && time /tmp/src/pin-2.14-71313-gcc.4.4.7-linux/pin -t ~/follow_io/follow_io.so -- tar tvf ./experiments/staging/const.tar | less

$ tar tvf patched.const.tar 
-rw-rw-r-- tjepsen/tjepsen 13230 2016-03-09 06:50 article1_13230B.txt
-rw-rw-r-- tjepsen/tjepsen  5898 2016-03-09 06:50 article2_5898B.txt
-rw-rw-r-- tjepsen/tjepsen    20 2016-03-09 07:50 20B.bin
-rw-rw-r-- tjepsen/tjepsen  2260 2016-03-09 06:50 article3_2260B.txt
-rw-rw-r-- tjepsen/tjepsen  1901 2016-03-09 06:51 article4_1901B.txt
-rw-rw-r-- tjepsen/tjepsen   850 2016-03-09 06:51 article5_850B.txt
-rw-rw-r-- tjepsen/tjepsen   948 2016-03-09 06:51 article6_948B.txt
-rw-rw-r-- tjepsen/tjepsen  1377 2016-03-09 06:52 article7_1377B.txt



Actual file size
================
-rw-rw-r-- 1 tjepsen tjepsen 40960 Mar  9 10:40 const.tar



Total bytes read
================
40959 ./read_bytes.txt
0-40959



Total bytes used
================
5119 ./used_bytes.txt
0-511
13824-14335
20480-20991
21504-22015
24576-25087
27136-27647
28672-29183
30208-30719
32256-33279