/var/lib/pcp/testsuite/src/iostat 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 17 18 19 20 21 22 23 24 25 | Linux 2.6.32-23-generic (bozo) 	27/07/10 	_i686_	(1 CPU)
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           3.30    0.09    0.94    0.53    0.00   95.14
Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               0.53         8.87         7.79   19338695   16980829
sdb               1.39        26.74         9.00   58264230   19612656
scd0              0.00         0.01         0.00      21528          0
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          36.12    0.00   22.07   41.81    0.00    0.00
Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               2.34        69.57        13.38        208         40
sdb              78.93       634.11         0.00       1896          0
scd0              0.00         0.00         0.00          0          0
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           1.00    0.00    2.34   96.66    0.00    0.00
Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               4.35         0.00        61.54          0        184
sdb             124.08       976.59      1139.80       2920       3408
scd0              0.00         0.00         0.00          0          0
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