From 0f1c74befa656305ecc85c954dc31f84c1cc26e1 Mon Sep 17 00:00:00 2001 From: Vitalii Bursov Date: Tue, 30 Apr 2024 18:05:25 +0300 Subject: docs: cgroup-v1: Clarify that domain levels are system-specific Add a clarification that domain levels are system-specific and where to check for system details. Signed-off-by: Vitalii Bursov Signed-off-by: Ingo Molnar Reviewed-by: Valentin Schneider Acked-by: Vincent Guittot Link: https://lore.kernel.org/r/42b177a2e897cdf880caf9c2025f5b609e820334.1714488502.git.vitaly@bursov.com --- Documentation/admin-guide/cgroup-v1/cpusets.rst | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/admin-guide/cgroup-v1/cpusets.rst b/Documentation/admin-guide/cgroup-v1/cpusets.rst index 7d3415eea05d..f401af5e2f09 100644 --- a/Documentation/admin-guide/cgroup-v1/cpusets.rst +++ b/Documentation/admin-guide/cgroup-v1/cpusets.rst @@ -568,7 +568,7 @@ on the next tick. For some applications in special situation, waiting The 'cpuset.sched_relax_domain_level' file allows you to request changing this searching range as you like. This file takes int value which -indicates size of searching range in levels ideally as follows, +indicates size of searching range in levels approximately as follows, otherwise initial value -1 that indicates the cpuset has no request. ====== =========================================================== @@ -581,6 +581,11 @@ otherwise initial value -1 that indicates the cpuset has no request. 5 search system wide [on NUMA system] ====== =========================================================== +Not all levels can be present and values can change depending on the +system architecture and kernel configuration. Check +/sys/kernel/debug/sched/domains/cpu*/domain*/ for system-specific +details. + The system default is architecture dependent. The system default can be changed using the relax_domain_level= boot parameter. -- cgit v1.2.3-58-ga151