that, the kernel version may probably be older, but we can't provide
any guarantee. Please let us know if you are able to go lower
without any problems.
- - **[`liburcu`](http://www.liburcu.org/) >= 0.8.0**: userspace RCU library,
+ - **[`liburcu`](http://www.liburcu.org/) >= 0.9.0**: userspace RCU library,
by Mathieu Desnoyers and Paul E. McKenney.
- **`libpopt` >= 1.13**: command line arguments parsing library.
- Debian/Ubuntu package: `libpopt-dev`
- - **`libuuid`**: universally unique ID library
- - Debian/Ubuntu package: `uuid-dev`
- **`libxml2` >= 2.7.6**: XML document parsing library. Needed for
tracing session configuration saving/loading and machine interface
output support.
pages with the `--help` option or with the `lttng help` command.
Note that without `man`, you cannot get offline help with
LTTng-tools commands, not even their usage.
+ - **libpfm >= 4.0**: needed to run the perf regression test suite.
+ - Debian/Ubuntu package: `libpfm4-dev`
LTTng-tools supports both the [LTTng Linux Kernel tracer](https://lttng.org)
and [LTTng user space tracer](https://lttng.org) released as part of the same