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It all seems to have stemmed from Chris Coyier’s tweet, and I was coincidentally on stage at An Event Apart San Francisco talking about performance budgets at that very moment with Chris in the room. In response, Tim Kadlec posted Performance Budget Metrics, a great categorization schema for the different ways you can measure performance. I should mention: just about everything I know about performance budgets comes from Tim, either from his writings or through the stuff I observed while we worked on the Grantland and Radio Free Europe redesigns together.