DHCP Failover and Performance

[perl-list]

You might consider making your lease length a bit longer. If you are having 25 bindings/sec with only 100k clients, then you must only have a 2 hour lease. I would not run with less than an 8 hour lease in any environment. You might even consider longer than this depending on what kind of clients they are. A week wouldn't be out of bounds if this is a non-hostile corporate network etc... 

----- Original Message -----

> From: "LONGREE Yves (SDV/PSE)" <yves.longree at belgacom.be>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Wednesday, February 22, 2012 3:53:21 AM
> Subject: RE: DHCP Failover and Performance

> Hello,

> I have also considered performances aspect in failover
> Even on good servers, I was not able to go higher then 25 binding/sec
> (Discover-offer-request-ack for 100.000 clients)
> I also observed that performance is going down as the leasefile grows

> I tried to put leasefile in ramdisk or using some virtualization
> (running two instance of the process on same physical HW) but with
> few gain.

> Any tips on how improving performances ?

> regards
> Yves
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