On 12/4/21 14:25, Tao Zhou wrote: > On Mon, Nov 29, 2021 at 12:07:38PM +0100, Daniel Bristot de Oliveira 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-0.4.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 > > Set osnoise/x to DEADLINE, the return is not success. see: > > tao@geo ~/opensource/rtla-0.4 $ sudo rtla osnoise top -P d:100us:1ms -c 0-3 -r 900000 -d 1M -q > boost_with_deadline failed to boost pid 4766: Operation not permitted > Failed to set sched parameters Did you disable the admission control? e.g., $ sudo sysctl -w kernel.sched_rt_runtime_us=-1 -- Daniel
