tuned-adm: add page (#14339)

pages/linux/tuned-adm.md

@@ -0,0 +1,24 @@
+# tuned-adm
+
+> Manage and optimize system performance tuning profiles on Linux.
+> More information: <https://tuned-project.org>.
+
+- List available profiles:
+
+`tuned-adm list`
+
+- Show the currently active profile:
+
+`tuned-adm active`
+
+- Set a specific tuning profile:
+
+`tuned-adm profile {{profile_name}}`
+
+- Recommend a suitable profile based on the current system:
+
+`tuned-adm recommend`
+
+- Disable tuning:
+
+`tuned-adm off`