The latest version uses modern eBPF/libbpf/Rust-based blazesym and in basic mode does not inject any tracepoints or probes onto the critical path of other threads in the systems (such passive sampling is achieved using sleepable eBPF programs, task iterators, etc).
Previous discussion about an earlier version of the same eBPF/bcc-based thread activity "tracking + sampling" concept and implementation:
- https://news.ycombinator.com/item?id=40869877 (2024)
The latest version uses modern eBPF/libbpf/Rust-based blazesym and in basic mode does not inject any tracepoints or probes onto the critical path of other threads in the systems (such passive sampling is achieved using sleepable eBPF programs, task iterators, etc).