SIGOPS

The uncontrolled use of the cache hierarchy in a multicore processor by real-time tasks may impact their worst-case execution times. Several operating system techniques have been recently proposed to deal with caches in a multiprocessor in order to ...

Phase Change Memory (PCM) is emerging as an attractive alternative to Dynamic Random Access Memory (DRAM) in building data-intensive computing systems. PCM offers read/write performance asymmetry that makes it necessary to revisit the design of in-...

There is a vast number and variety of file systems currently available, each optimizing for an ever growing number of storage devices and workloads. Users have an unprecedented, and somewhat overwhelming, number of data management options. At the same ...

Transient hardware faults in computer systems have become widespread as shrinking structures and low supply voltages reduce the amount of energy needed to trigger a fault. This paper describes the latest improvements of a software-based fault-tolerance ...

Despite a number of radical changes in how computer systems are used, the design principles behind the very core of the systems stack--an operating system kernel--has remained unchanged for decades.We run monolithic kernels developed with a combination ...

Kernel probes allow code to be inserted into a running operating system kernel to gather information for debugging or profiling. Inserting code into the kernel raises a number of safety issues. Current solutions follow one of the two paths: a VM-based ...

Among all classes of parallel programming abstractions, lock-free data structures are considered one of the most scalable and efficient thanks to their fine-grained style of synchronization. However, they are also challenging for developers and tools to ...

With the emergence of both power and performance as primary design constraints, energy efficiency has become the new design criteria. A platform with heterogeneous-ISA processors can provide multiple power-performance execution points needed for a ...

Battery State of Charge (SOC) estimation is a fundamental component of today's smartphones that affects the internal processes and observable behavior of the devices. This article systematically investigates and analyzes the SOC estimation techniques in ...

Datacenters demand big memory servers for big data. For blade servers, which disaggregate memory across multiple blades, we derive technology and architectural models to estimate communication delay and energy. These models permit new case studies in ...