LTTng (Linux Trace Toolkit: next generation) is a kernel and application tracer for Linux. It gathers information about applications and important system events to help diagnose application, library and operating system misuses.

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We contribute to and maintain parts of the Linux kernel, namely the tracepoint instrumentation API, the membarrier(2) system call, and we actively work on rseq(2) and cpu_opv(2) (Restartable Sequences and CPU Operation Vector) system calls.

Common Trace Format

The Common Trace Format (CTF) is proposed as a trace format that suits the needs of the embedded, telecom, high performance, and kernel communities.

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Babeltrace is a trace reader and converter engine. It is a reference implementation of the Common Trace Format (CTF).

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Userspace RCU

The Userspace RCU library (liburcu) is a highly scalable LGPL synchronization library providing very low overhead and linearly scalable read-side synchronization, as well as efficient data structures based on RCU and lock-free algorithms.

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