Don't use Pound for load balancing
blog.emmettshear.com
blog.emmettshear.com
The server is sitting there with all the ram and CPU and 2% or 20% doesn't make a difference if there is nothing else to take advantage of that other 98 to 80%. The only thing that matters is the ability to handle peaks (and being reliable).
You want server software that is optimized around the worst case scenario (unless you want to run your software on servers with little resources in which case it's the other way around).
So if nginx can handle higher loads than pound, it's a better load balancer. But if it keeps my servers at 2% most of the time but does worse under high loads then it's no good.
Now I wouldn't use Pound either for load balancing and I believe nginx should be better, but the data in this article doesn't really support that argument.
nginx => haproxy => mongrels
http://wiki.codemongers.com/NginxHttpUpstreamRequestHashModu...