Tag
overhead
- Apr 21, 2026 The Overhead Budget of a Sampling Profiler Where the cost of continuous profiling actually goes, why per-sample cost and sample rate multiply, and how aggregation location changes the bill. observability
- Jul 28, 2025 Sampled Allocation Profiling and the Cost of Interposing on malloc How heap profilers attribute live memory to allocation sites, why sampling by size needs corrections the CPU analogue does not, and what interposition itself costs. observability
- Nov 22, 2024 Serialization Delay and the Cost of Small Packets Why shrinking packets reduces queueing delay but raises packet rate, header overhead, and per-packet forwarding cost, and where the crossover sits. networking
- Apr 16, 2022 Signal-Driven Sampling: How a Profiler Captures a Stack Without Instrumenting Code How a timer, a signal handler, and an async-signal-safe buffer produce periodic stack samples, and why the delivery path decides what a sample can mean. observability
- Feb 19, 2022 In-Kernel Aggregation: Counting Stacks in a Hash Map Instead of Shipping Them How a kernel-side profiler folds samples into a map before userspace sees them, why that removes the ring buffer from the hot path, and where the map's limits bite. observability