Re: high performance open source DHCP solution?

[Nick Colton <ncolton () allophone net>]

We were seeing similar issues with low leases, moved the dhcpd.leases file
to a ramdisk and went from ~200 leases per second to something like 8,000
leases per second.


On Tue, Jul 19, 2011 at 11:08 PM, George Herbert
<george.herbert () gmail com>wrote:

> 220-ish per second sounds roughly like a 1-disk (or 2 mirrored disk)
> IOPS problem, personally...
>
> But any number of other things could be affecting it.
>
> The number should be thousands if your disk / filesytem RAM cache /
> server configuration aren't inadequate...
>
> On Tue, Jul 19, 2011 at 8:54 PM, Jimmy Hess <mysidia () gmail com> wrote:
> > On Tue, Jul 19, 2011 at 9:21 PM, Rogelio <scubacuda () gmail com> wrote:
> > > The free DHCP solution, ISC, seems to be having scaling issues (i.e.
> > > handling only about 200 DHCPDISCOVER and 20 DHCPRENEW requests), and I
> > > was wondering if anyone had any open source suggestions of solutions
> > > that could scale much better?
> >
> > Where do you get that ISC DHCPD only handles 200 DHCPDISCOVER / 20
> DHCPRENEW
> > requests?    That doesn't sound right.   So I wonder what are you
> measuring?
> > Is this a number of answers per second your implementation of ISC
> > DHCPD is providing successfully?
> > There are architectural facts about any environment besides what
> > software is performing the DHCP task.
> >
> > How many  I/Os  + fsync()'s  per second can this DHCP server handle
> > that does only 20 renews?
> >
> > --
> > -JH
> >
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>
>
> --
> -george william herbert
> george.herbert () gmail com
>
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