On Fri, 29 Oct 2021 21:26:03 +0200 Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> wrote: > The rtla(1) is a meta-tool that includes a set of commands that > aims to analyze the real-time properties of Linux. But 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. > > To start, it presents an interface to the osnoise and timerlat tracers. > In the future, it will also serve as home to the rtsl [1] and other > latency/noise tracers. > > If you just want to run it, you can download the tarball here: > - https://bristot.me/files/rtla/tarball/rtla-0.3.tar.bz2 > > To compile rtla on fedora you need: > $ 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 .. > $ sudo dnf install python3-docutils procps-devel > $ cd $rtla_src > $ make > $ sudo make install Add a README to the above, so that people will know what dependencies there are. Thanks! -- Steve > > The tracing option (-t) depends some kernel patches that are > available at [2]. > > This tool was be discussed at the RT-MC during LPC2021 [3] > > [1] rtsl: https://github.com/bristot/rtsl/ > [2] https://lore.kernel.org/lkml/cover.1635533292.git.bristot@xxxxxxxxxx/ > [3] https://youtu.be/cZUzc0U1jJ4 > > Changes from v6: > - Revisited osnoise option config functions > - Properly handles offline CPUs > - Some cleanups > - Fixed an histogram allocation problem (Tao Zhou) > - Revisited open()/read()/write() (Tao Zhou) > Changes from v5: > - Fix retval check in save_trace_to_file() (Tao Zhou) > - Fix goto logic in save_trace_to_file() (Tao Zhou) > - Removed unused save_trace_pipe_to_file() function > - Correctly handle an error on osnoise_set_* functions during > "apply config" for all tools (Tao Zhou) > Changes from v3: > - Add cross-compile support (Ahmed S. Darwish) > - Move documentation to Documentation/tools/rtla (Jonathan Corbet) > - Use .rst format for documentation (Jonathan Corbet) > - Use include option from .rst to group common parts of the documentation > - Makefile (main and doc) cleanups > Changes from v2: > - Fix the miss conception of the "size" for kernel histograms (Steven/Tom) > - Change the --skip-zeros to --with-zeros option as the former is better > for humans (and the latter for computers to plot charts). > - A lot of checkpatch fixes for the user-space part. > Changes from v1: > - Fixes -t options on osnoise tracers (-t means --trace for all tools now) > - Fixes --bucket-size references (not --bucket_size) > > Daniel Bristot de Oliveira (14): > rtla: Real-Time Linux Analysis tool > rtla: Helper functions for rtla > rtla: Add osnoise tool > rtla/osnoise: Add osnoise top mode > rtla/osnoise: Add the hist mode > rtla: Add timerlat tool and timelart top mode > rtla/timerlat: Add timerlat hist mode > rtla: Add Documentation > rtla: Add rtla osnoise man page > rtla: Add rtla osnoise top documentation > rtla: Add rtla osnoise hist documentation > rtla: Add rtla timerlat documentation > rtla: Add rtla timerlat top documentation > rtla: Add rtla timerlat hist documentation > > Documentation/tools/rtla/Makefile | 41 + > Documentation/tools/rtla/common_appendix.rst | 12 + > .../tools/rtla/common_hist_options.rst | 23 + > Documentation/tools/rtla/common_options.rst | 24 + > .../tools/rtla/common_osnoise_description.rst | 8 + > .../tools/rtla/common_osnoise_options.rst | 17 + > .../rtla/common_timerlat_description.rst | 10 + > .../tools/rtla/common_timerlat_options.rst | 16 + > .../tools/rtla/common_top_options.rst | 3 + > .../tools/rtla/rtla-osnoise-hist.rst | 66 ++ > Documentation/tools/rtla/rtla-osnoise-top.rst | 61 + > Documentation/tools/rtla/rtla-osnoise.rst | 59 + > .../tools/rtla/rtla-timerlat-hist.rst | 106 ++ > .../tools/rtla/rtla-timerlat-top.rst | 145 +++ > Documentation/tools/rtla/rtla-timerlat.rst | 57 + > Documentation/tools/rtla/rtla.rst | 48 + > tools/tracing/rtla/Makefile | 102 ++ > tools/tracing/rtla/src/osnoise.c | 1017 +++++++++++++++++ > tools/tracing/rtla/src/osnoise.h | 96 ++ > tools/tracing/rtla/src/osnoise_hist.c | 799 +++++++++++++ > tools/tracing/rtla/src/osnoise_top.c | 577 ++++++++++ > tools/tracing/rtla/src/rtla.c | 87 ++ > tools/tracing/rtla/src/timerlat.c | 72 ++ > tools/tracing/rtla/src/timerlat.h | 4 + > tools/tracing/rtla/src/timerlat_hist.c | 820 +++++++++++++ > tools/tracing/rtla/src/timerlat_top.c | 615 ++++++++++ > tools/tracing/rtla/src/trace.c | 192 ++++ > tools/tracing/rtla/src/trace.h | 27 + > tools/tracing/rtla/src/utils.c | 433 +++++++ > tools/tracing/rtla/src/utils.h | 56 + > 30 files changed, 5593 insertions(+) > create mode 100644 Documentation/tools/rtla/Makefile > create mode 100644 Documentation/tools/rtla/common_appendix.rst > create mode 100644 Documentation/tools/rtla/common_hist_options.rst > create mode 100644 Documentation/tools/rtla/common_options.rst > create mode 100644 Documentation/tools/rtla/common_osnoise_description.rst > create mode 100644 Documentation/tools/rtla/common_osnoise_options.rst > create mode 100644 Documentation/tools/rtla/common_timerlat_description.rst > create mode 100644 Documentation/tools/rtla/common_timerlat_options.rst > create mode 100644 Documentation/tools/rtla/common_top_options.rst > create mode 100644 Documentation/tools/rtla/rtla-osnoise-hist.rst > create mode 100644 Documentation/tools/rtla/rtla-osnoise-top.rst > create mode 100644 Documentation/tools/rtla/rtla-osnoise.rst > create mode 100644 Documentation/tools/rtla/rtla-timerlat-hist.rst > create mode 100644 Documentation/tools/rtla/rtla-timerlat-top.rst > create mode 100644 Documentation/tools/rtla/rtla-timerlat.rst > create mode 100644 Documentation/tools/rtla/rtla.rst > create mode 100644 tools/tracing/rtla/Makefile > create mode 100644 tools/tracing/rtla/src/osnoise.c > create mode 100644 tools/tracing/rtla/src/osnoise.h > create mode 100644 tools/tracing/rtla/src/osnoise_hist.c > create mode 100644 tools/tracing/rtla/src/osnoise_top.c > create mode 100644 tools/tracing/rtla/src/rtla.c > create mode 100644 tools/tracing/rtla/src/timerlat.c > create mode 100644 tools/tracing/rtla/src/timerlat.h > create mode 100644 tools/tracing/rtla/src/timerlat_hist.c > create mode 100644 tools/tracing/rtla/src/timerlat_top.c > create mode 100644 tools/tracing/rtla/src/trace.c > create mode 100644 tools/tracing/rtla/src/trace.h > create mode 100644 tools/tracing/rtla/src/utils.c > create mode 100644 tools/tracing/rtla/src/utils.h >
