systemd-analyze is the command to investigate time taken by each service during boot in CentOS 7. Is there a similar utility in CentOS 6 for doing this?

update: extending the question after Lucas' comment.

If there isn't such a direct way, any thoughts on using this method to compute total time taken by boot process:

t1 = time stamp shown by last reboot

t2 = last modified time of /var/log/boot.log

boot time = t2 - t1

Anything wrong with this approach?

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