Hi, On 06/06/23 18:12, Daniel Bristot de Oliveira wrote: > This is a series of improvements for rtla, mainly as a result of our > daily usage of the tool debugging problems at red hat. > > The cgroup support and house keeping options are from our usage > of the tool debugging containers. > > The auto-analysis overhead reduction is needed when we go to > large boxes - but it is really hand in practice, as it gives an idea > of the problem without having to look at the trace. > > Running hwnoise 100 % of CPU time might cause some systems > to slow down too much. Reduce its utilization to 75% by default to > avoid problems for people using it for the first time. > > Finally, it adds support for running timerlat user-space threads, > and to collect the additional field via rtla timerlat top/hist. > > Changes from V2: > - Add timerlat hist -u option > - Link: https://lore.kernel.org/lkml/cover.1684863094.git.bristot@xxxxxxxxxx/ > Changes from V1: > - Add the user-space thread support to rtla timerlat top > - Link: https://lore.kernel.org/lkml/cover.1683827510.git.bristot@xxxxxxxxxx/ > > Daniel Bristot de Oliveira (11): > rtla: Add -C cgroup support > rtla: Add --house-keeping option > rtla: Change monitored_cpus from char * to cpu_set_t > rtla: Automatically move rtla to a house-keeping cpu > rtla/timerlat: Give timerlat auto analysis its own instance > rtla/timerlat_hist: Add auto-analysis support > rtla: Start the tracers after creating all instances > rtla/hwnoise: Reduce runtime to 75% > rtla: Add timerlat user-space support for timerlat top > rtla: Add timerlat user-space support for > Documentation: Add tools/rtla timerlat -u option documentation > > Documentation/tools/rtla/common_options.rst | 8 + > .../tools/rtla/common_timerlat_aa.rst | 7 - > .../tools/rtla/common_timerlat_options.rst | 7 + > .../tools/rtla/rtla-timerlat-hist.rst | 7 +- > .../tools/rtla/rtla-timerlat-top.rst | 7 + > tools/tracing/rtla/src/osnoise.c | 65 ++++ > tools/tracing/rtla/src/osnoise.h | 5 + > tools/tracing/rtla/src/osnoise_hist.c | 90 ++++- > tools/tracing/rtla/src/osnoise_top.c | 83 ++++- > tools/tracing/rtla/src/timerlat_aa.c | 35 +- > tools/tracing/rtla/src/timerlat_aa.h | 5 +- > tools/tracing/rtla/src/timerlat_hist.c | 262 ++++++++++++-- > tools/tracing/rtla/src/timerlat_top.c | 229 +++++++++++-- > tools/tracing/rtla/src/timerlat_u.c | 224 ++++++++++++ > tools/tracing/rtla/src/timerlat_u.h | 18 + > tools/tracing/rtla/src/utils.c | 324 +++++++++++++++++- > tools/tracing/rtla/src/utils.h | 7 + > 17 files changed, 1277 insertions(+), 106 deletions(-) > create mode 100644 tools/tracing/rtla/src/timerlat_u.c > create mode 100644 tools/tracing/rtla/src/timerlat_u.h > > -- I've been heavily relying on these for debugging various issues with latency sensitive workloads and they work like a charm. Tested-by: Juri Lelli <juri.lelli@xxxxxxxxxx> Best, Juri
