Victor.Duchovnimorganstanley.com
Date: Mon Feb 02 2004 - 10:23:01 CST

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On Mon, 2 Feb 2004, Dean Strik wrote:

> If 40%-60% is unacceptable (I find that hard to believe), then yes,
> buying expensive load-balancing equipment to make it nearer 50-50 is an
> option. So is building some simple load balancing box itself. But
> personally, if I had to spend money on new hardware for load balancing,
> I'd just buy a third machine - distributing load over 3 boxes..
>

I am seeing a volume independent 52%/48% split in favour of the first of
two MX records. The sample size is ~500000 messages, so the standard
deviation for a fair binomial distribution is ~0.07%, this means that ~2%
of the clients that connect to Morgan Stanley's Internet facing MX hosts
don't shuffle the MX records. I don't know whether this assymetry rate is
representative of other high volume sites, or just peculiar to us.

--
        Viktor.

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