Messages in this thread Patch in this message | | | From | Tony Luck <> | Subject | [PATCH v4 6/7] x86/resctrl: Update documentation with Sub-NUMA cluster changes | Date | Sat, 22 Jul 2023 12:07:39 -0700 |
| |
With Sub-NUMA Cluster mode enabled the scope of monitoring resources is per-NODE instead of per-L3 cache. Suffixes of directories with "L3" in their name refer to Sub-NUMA nodes instead of L3 cache ids.
Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Peter Newman <peternewman@google.com> --- Documentation/arch/x86/resctrl.rst | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/Documentation/arch/x86/resctrl.rst b/Documentation/arch/x86/resctrl.rst index cb05d90111b4..4d9ddb91751d 100644 --- a/Documentation/arch/x86/resctrl.rst +++ b/Documentation/arch/x86/resctrl.rst @@ -345,9 +345,13 @@ When control is enabled all CTRL_MON groups will also contain: When monitoring is enabled all MON groups will also contain: "mon_data": - This contains a set of files organized by L3 domain and by - RDT event. E.g. on a system with two L3 domains there will - be subdirectories "mon_L3_00" and "mon_L3_01". Each of these + This contains a set of files organized by L3 domain or by NUMA + node (depending on whether Sub-NUMA Cluster (SNC) mode is disabled + or enabled respectively) and by RDT event. E.g. on a system with + SNC mode disabled with two L3 domains there will be subdirectories + "mon_L3_00" and "mon_L3_01". The numerical suffix refers to the + L3 cache id. With SNC enabled the directory names are the same, + but the numerical suffix refers to the node id. Each of these directories have one file per event (e.g. "llc_occupancy", "mbm_total_bytes", and "mbm_local_bytes"). In a MON group these files provide a read out of the current value of the event for -- 2.40.1
| |