Danny Raz visits HPL

We hosted Danny Raz from Technion (on sabbatical at Google) today. He gave a very entertaining talk on cost aware service optimization,
based on joint papers with David Breitgand, Rami Cohen, and Amir Nahir.
The main message of his talk was that when one takes the cost of management into the equation, there are non trivial tradeoffs to be made. In particular, he presented alternative approaches to load balancing and how the optimal amount of monitoring overhead depends on variables such as load, arrival rate, and relative cost of transferring information between dispatcher and servers.