Hi Tony, On 6/21/23 10:40, Tony Luck wrote: > 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@xxxxxxxxx> > --- > 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..13fc9fa664fc 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 "mon_L3_01". The or just insert a semi-colon. Anything to break up the run-on sentence. > + 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", has > "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 -- ~Randy
