Tag
ebpf
- Dec 6, 2025 XDP and eBPF in the Receive Path Where an XDP program runs relative to the socket layer, what the three attach modes give up, and which packet-processing decisions can be made before a socket buffer exists. networking
- 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