SHARP control
Shekhar Srikantaiah, Mahmut Kandemir, Qian Wang · 2009
Shared resources in a chip multiprocessors (CMPs) pose unique challenges to the seamless adoption of CMPs in virtualization environments and high performance computing systems. While sharing resources like on-chip last level cache is generally beneficial due to increased resource utilization, lack of control over management of these resources can lead to loss of determinism, faded performance isolation, and an overall lack of the notion of Quality of Service (QoS) provided to individual applications. This has direct ramifications on adhering to service level agreements in environments involving consolidation of multiple heterogeneous workloads. Although providing QoS in presence of shared resources has been addressed in the literature, it has been commonly observed that reservation of resources for QoS leads to under-utilization of resources.