/var/lib/pcp/testsuite/src/iostat-d-k is in pcp-testsuite 3.9.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | Linux 2.6.32-23-generic (bozo) 	27/07/10 	_i686_	(1 CPU)
Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda               0.53         4.45         3.90    9706667    8499886
sdb               1.39        13.36         4.53   29151467    9885640
scd0              0.00         0.00         0.00      10764          0
Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda               0.00         0.00         0.00          0          0
sdb               5.00         0.00       366.67          0       1100
scd0              0.00         0.00         0.00          0          0
Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda               3.32         0.00        42.52          0        128
sdb               0.00         0.00         0.00          0          0
scd0              0.00         0.00         0.00          0          0
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