Daniel S. Berger

Modern datacenter servers increasingly deploy heterogeneous, multi-tier memory hierarchies. For these new architectures, OSes depend on measurements of memory usage to make intelligent placement and control decisions. However, existing hardware and software mechanisms for tracking memory usage on...

HDD capacities will greatly increase over the next ten years, lowering cost-per-TB in large-scale storage systems. Unfortunately, device bandwidth will not grow proportionally to device capacity. Hence, storage systems will face an IO wall where the demand for HDD IO will outstrip supply. We find...