Taming Hot Bloat Under Virtualization with HUGESCOPE

Explore a 17-minute conference talk from USENIX ATC '24 that addresses the hot bloat problem in virtualization environments. Learn about HUGESCOPE, a lightweight and effective system designed to tackle hot bloat issues on commodity hardware. Discover how this innovative approach leverages indirect memory translation in hypervisors to provide efficient page tracking. Gain insights into the generic framework that supports page splitting and coalescing policies, considering factors such as memory pressure, access recency, frequency, and skewness. Understand the application of HUGESCOPE to various scenarios, including tiered memory management (HS-TMM) and page sharing (HS-Share). Examine the performance improvements and memory savings achieved by HUGESCOPE, with HS-TMM offering up to 61% better performance than vTMM and HS-Share saving 41% more memory compared to Ingens while maintaining comparable performance.