On Sat, Feb 20, 1999 at 08:46:37PM -0800, Roeland M.J. Meyer wrote:
> At 11:38 AM 2/20/99 -0800, Kent Crispin wrote:
> >On Sat, Feb 20, 1999 at 09:32:54AM -0800, Greg Skinner wrote:
> >
> >I am actually responding to Roeland's comment here...
> >
> >> Roeland Meyer wrote:
> >> > Sure, but first you'll have to prove that there is a problem, Chicken
> >> > Little. Show me a failure mode that I can repeat.
> >
> >There is no failure mode that you can repeat, because the failure
> >mode exists in the entire DNS, not in a particular node. Caching
> >behavior is a global property of DNS, not just a property of a
> >single running copy of bind. Your failure to comprehend this simple
> >fact is a fundamental error.
>
> Read again Kent, I said "mode", not "node". Of course, I was talking about
> the system. I've been working in meta-clusters for about fourteen years
> now, I think I know what a "system" is.
I'm sorry, Roeland, but the fact that you think 5 PCs with 28 virtual
hosts is a meaningful simulation of a 43,000,000 node network
demonstrates without a shadow of a doubt that you simply do not
understand. You are playing with tinkertoys, and talking like you
built Hoover Dam.
> FYI, since we are deploying a new
> root-server cluster, I had five dual Pentium 450 boxes available, with two
> NIC's each, and a 100baseTX FDX switch. Each NIC has four IP addresses. We
> built a set of scripts that hammered BIND pretty good. Also, a K6-200 to
> test with a slower machine. In various configurations, that gives us 28
> virtual hosts to play with. We instrumented various parts of BIND and ran
> the suite at maximum speed. We did this for about three weeks, testing
> various configurations. However, we only tested BIND4 in this way.
[...]
>
> >Note that DNS traffic is already a significant fraction of the
> >traffic on the backbones.
>
> Do you have access to a backbone router?
No. But I work on networks with a whole lot more than 5 nodes, and a
whole lot more horsepower than dual pentium 450's.
--
Kent Crispin "Do good, and you'll be
[EMAIL PROTECTED] lonesome." -- Mark Twain
