diff options
Diffstat (limited to 'tools/tracing/rtla/README.txt')
| -rw-r--r-- | tools/tracing/rtla/README.txt | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/tools/tracing/rtla/README.txt b/tools/tracing/rtla/README.txt new file mode 100644 index 000000000..13b4a798b --- /dev/null +++ b/tools/tracing/rtla/README.txt @@ -0,0 +1,75 @@ +RTLA: Real-Time Linux Analysis tools + +The rtla meta-tool includes a set of commands that aims to analyze +the real-time properties of Linux. Instead of testing Linux as a black box, +rtla leverages kernel tracing capabilities to provide precise information +about the properties and root causes of unexpected results. + +Installing RTLA + +RTLA depends on the following libraries and tools: + + - libtracefs + - libtraceevent + - libcpupower (optional, for --deepest-idle-state) + - libcheck (optional, for unit tests) + +For BPF sample collection support, the following extra dependencies are +required: + + - libbpf 1.0.0 or later + - bpftool with skeleton support + - clang with BPF CO-RE support + +It also depends on python3-docutils to compile man pages. + +For development, we suggest the following steps for compiling rtla: + + $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git + $ cd libtraceevent/ + $ make + $ sudo make install + $ cd .. + $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git + $ cd libtracefs/ + $ make + $ sudo make install + $ cd .. + $ cd $libcpupower_src + $ make + $ sudo make install + $ cd $rtla_src + $ make + $ sudo make install + +Running tests + +RTLA has two test suites: a runtime test suite and a unit test suite. + +The runtime test suite is available as "make check" (root required) and has +the following dependencies, in addition to RTLA build dependencies: + +- Perl +- Test::Harness (libtest-harness-perl on Debian/Ubuntu, perl-Test-Harness on Fedora/RHEL) +- bash +- coreutils +- ldd +- util-linux +- procps(-ng) +- bpftool (if rtla is built against libbpf) + +as well as the following required system configuration: + +- CONFIG_OSNOISE_TRACER=y +- CONFIG_TIMERLAT_TRACER=y +- tracefs mounted and readable at /sys/kernel/tracing + +The unit test suite is available as "make unit-tests" and has the following +dependencies: + +- libcheck + +Unlike the runtime test suite, root is not required to run unit tests, nor is +a tracefs/osnoise/timerlat-capable kernel required. + +For further information, please refer to the rtla man page. |
