I would really love to know what he did to tune that Rackspace VM. I had a terrible time trying to get node.js and others to get past 5,000 concurrent websocke

I would really love to know what he did to tune that Rackspace VM. I had a terrible time trying to get node.js and others to get past 5,000 concurrent websocket connections on a m1.large EC2 instance or on Rackspace.