Whamm - A Framework for Performant, Sandboxed Instrumentation

Explore a comprehensive conference talk introducing Whamm, an innovative instrumentation framework designed to provide observability into WebAssembly workloads that typically operate as black boxes. Learn how this framework addresses critical questions about hot paths, resource usage, cache strategies, and security policy compliance in Wasm applications. Discover Whamm's dual capability to statically rewrite bytecode or dynamically insert probes through an engine interface that invokes callbacks at runtime. Understand how the framework achieves portable instrumentation with high performance by leveraging engine optimizations that reduce overhead and providing logic as Wasm code that engines can compile and inline into application code. Examine Whamm's versatility in instrumenting not only Wasm modules and components but also kernel-level events. Gain practical insights through a live demonstration of writing monitors and learn how to apply this framework effectively in your specific domain for enhanced observability and performance monitoring of WebAssembly workloads.