Performance predictability is a key requirement for high-performant applications in today’s multi-tenant massive-scale data centers hosting hundreds of thousands of servers. Online services like search or social networks running in infrastructure data centers need such predictability to satisfy application Service Level Agreements (SLAs); for example, online search queries need to be responded within a few hundred milliseconds. Cloud data centers require guaranteed performance to bound customer costs and spur adoption. However, several components of today’s datacenters are at odds with such high-level application SLAs.
The Predictable Data Centers (PDC) project tackles the issue of unpredictable application performance in data centers. A key contributor to such unpredictability is shared resources like network and storage. The bandwidth across the cloud network and to the cloud storage service can vary significantly. In this talk, I will discuss how we can design a predictable data center architecture that offers performance SLAs across shared resources