You're Doing It Wrong - ACM Queue - http://queue.acm.org/detail...
"The first user of Varnish, the large Norwegian newspaper VG, replaced 12 machines running Squid with three machines running Varnish. The Squid machines were flat-out 100 percent busy, while the Varnish machines had 90 percent of their CPU available for twiddling their digital thumbs.a" - Tracy
via @chrislea - Tracy