[bpf-ci-bot] Flaky Test: Task_local_storage/sys_enter_exit

The berkeley packet filter (bpf; Also bsd packet filter, classic bpf or cbpf) is a network tap and packet filter which permits computer network packets to be captured and filtered at the operating. This directory contains documentation for the bpf (berkeley packet filter) facility, with a focus on the extended bpf version (ebpf).

Extended bpf (or ebpf) is similar to the original ("classic") bpf (cbpf) used to filter network packets. Berkeley packet filters (bpf) provide a powerful tool for intrusion detection analysis. Use bpf filtering to quickly reduce large packet captures to a reduced set of results by filtering based on a specific.

The bpf program has two ways to pass measured data back to user space: Either per-event details, or via a bpf map. Bpf maps can implement arrays, associative arrays, and histograms, and are suited.

Apr 14, 2025what are bpf and ebpf? Bpf or berkley packet filter is a virtual machine inside the os kernel, which allows you to load arbitrary code into it. Bcc makes bpf programs easier to write, with kernel instrumentation in c (and includes a c wrapper around llvm), and front-ends in python and lua.

It is suited for many tasks, including performance. Jan 8, 2019if you’re interested in topics like fast packet processing and observability, learning bpf should definitely be on your to-do list. Here we try to give a guide to bpf, covering a range of topics.