Add cgroup2 support

conan-io · Jul 25, 2022 · 909bb14 · 909bb14
1 parent 7ae0add
commit 909bb14
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/reference/tools.rst b/reference/tools.rst
@@ -28,9 +28,11 @@ tools.cpu_count()
 
     def tools.cpu_count()
 
-Returns the number of CPUs available, for parallel builds. If processor detection is not enabled, it will safely return 1. When
-running in Docker, it reads cgroup to detect the configured number of CPUs. It Can be overwritten with the environment variable
-:ref:`env_vars_conan_cpu_count` and configured in the :ref:`conan_conf`.
+Returns the number of CPUs available, for parallel builds. If processor detection is not enabled, it will safely return 1.
+When running in Docker, it reads cgroup to detect the configured number of CPUs.
+In the case of cgroupv2 the number of CPUs is determined based on `/sys/fs/cgroup/cpu.max` file.
+When no limit is set, all CPUs detected by the processor are used. The number of CPUs available can be overwritten with
+the environment variable :ref:`env_vars_conan_cpu_count` and configured in the :ref:`conan_conf`.
 
 .. _tools_vcvars_command: