specs for fast DHCP servers?

John Hascall john at iastate.edu
Thu Apr 7 16:58:01 UTC 2011

> What would your ultimate DHCP server look like?

We have a Dell R410 with a quad-core 2.6Ghz, 3GB memory.
15k SAS drives in a RAID-10 config.

We issue over a million leases a day.  Our only perf
issue is that because we are a "NetReg" shop, we restart
dhcpd a LOT, so startup time (~8 seconds for us) is an


John Hascall, john at iastate.edu
Team Lead, NIADS (Network Infrastructure, Authentication & Directory Services)
IT Services, The Iowa State University of Science and Technology

> So, what should we buy to avoid performance bottlenecks?  I have been
> searching through the list archive a bit and it sounds like disk I/O is a
> big factor.  SSD disk for leases and log files?  Since dhcpd is single-
> threaded, I'm guessing we'd be better off with a really fast dual-proc box
> than a kind of fast quad or octo-core box.  True?  Will adding lots of RAM
> do anything but jack up the cost?  I suppose we could use a RAM disk for the
> leases and log, and not bother with SSD.
> -- 
> Paul Keck       pkeck at uga.edu         
> University of Georgia                 
> EITS Network Operations               mailto:pkeck at ediacara.org
>     --Opinions mine.--                Go fighting anomalocaridids!!!
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