BPF tracepoints peek inside the running kernel
BPF and kernel tracepoints let you observe behavior at the source with a tiny footprint: no agent, no restart, no stopping the workload. Traditional profiling means installing something, restarting with flags, or pausing the process — each of which perturbs the system under study or is forbidden in production. A BPF probe attaches to an already-running kernel, collects its answer, and detaches, leaving the workload exactly as it found it. ...