Contention aware execution: online contention detection and response

Cross-core application interference due to contention for shared on-chip and off-chip resources pose a significant challenge to providing application level quality of service (QoS) guarantees on commodity multicore micro-architectures. Unexpected cross-core interference is especially problematic when considering latencysensitive applications that are present in the web service data center application domains, such as web-search. The commonly used solution is to simply disallow the co-location of latency-sensitive applications and throughput-oriented batch applications on a single chip, leaving much of the processing capabilities of multicore micro-architectures underutilized. In this work we present a Contention Aware Execution Runtime (CAER) environment that provides a lightweight runtime solution that minimizes crosscore interference due to contention, while maximizing utilization. CAER leverages the ubiquitous performance monitoring capabilities present in current multicore proces...

• Type: Conference
• Year: 2010
• Where: CGO
• Authors: Jason Mars, Neil Vachharajani, Robert Hundt, Mary Lou Soffa
• Keywords: CGO 2010, Commodity Multicore Micro-architectures, Contention Aware Execution, Multicore Micro-architectures, Software Engineering