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On Tue, May 11, 2004 at 01:32:27PM -0700, Edward Chee wrote:
> I see. Pls excuse my ignorance - I'm new to all this :-)
>
> Hmm. I wonder how this TCP port issue directly limits the Zeus software load
> balancer's incoming connection rate. In section 1.4 of
> http://support.zeus.com/doc/zlb/sizing_guide.pdf, they describe this
> problem.
>
> Could it be because their balancer actually acts as a HTTP reverse proxy,
> accepting all connections and then having to actually act as a client to the
> real servers? I guess that must be it -- since their brochure at
> http://www.zeus.com/library/products/zlb/zlb_brochure.pdf indicates that
> they automatically translate HTTP 1.0 requests into HTTP 1.1 pipelined
> connections.
Yes, I would guess so to.
> To rephrase: A load balancer that operates on Layer 7 and maintains
> persistent connections to the real servers has to act as a TCP client and is
> subject to the port limitations. Is my thinking correct?
Yes. Though if there are multiple source addresses available,
then it would have more ports available.
--
Horms
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