Fair comparison of bootcharts
-----------------------------

When comparing bootcharts of different readahead implementations an
extra consideration should be taken.  readahead-fedora also preloads
files that are used after the end of the rc2, which might affect the
results of a bootchart if the bootcharting program is stopped at the
end of rc2.

In order to fairly compare bootcharts the READAHEAD_EXTRA_COLLECT
option available at /etc/default/readahead-fedora should be set to 0,
and the system re-profiled.