From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- Documentation/tools/rtla/common_osnoise_description.rst | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 Documentation/tools/rtla/common_osnoise_description.rst (limited to 'Documentation/tools/rtla/common_osnoise_description.rst') diff --git a/Documentation/tools/rtla/common_osnoise_description.rst b/Documentation/tools/rtla/common_osnoise_description.rst new file mode 100644 index 0000000000..d5d61615b9 --- /dev/null +++ b/Documentation/tools/rtla/common_osnoise_description.rst @@ -0,0 +1,8 @@ +The **rtla osnoise** tool is an interface for the *osnoise* tracer. The +*osnoise* tracer dispatches a kernel thread per-cpu. These threads read the +time in a loop while with preemption, softirq and IRQs enabled, thus +allowing all the sources of operating system noise during its execution. +The *osnoise*'s tracer threads take note of the delta between each time +read, along with an interference counter of all sources of interference. +At the end of each period, the *osnoise* tracer displays a summary of +the results. -- cgit v1.2.3