DHCP restart with bulk lease data

[sthaug at nethelp.no]

> The main thing I am facing the issue is when the data is too high like
> 50-60k leases in the file, the dhcpd service restart is taking more time
> (nearly 5-6 minutes) some times nearly 10-11 mins

If a dhcpd restart with 50 - 60k leases takes 5-6 minutes or more,
you're doing something wrong. With a decent disk subsystem this is
expected to take a few *seconds* (5 - 10 seconds would be my estimate
based on what we see here with a larger leases file).

Steinar Haug, Nethelp consulting, sthaug at nethelp.no