> Yes, although there is some hard-to-avoid fuzz about the precise > meaning of "local" and "total". Things are only getting fuzzier with mixed DDR and CXL memory. > As Reinette pointed out, there is the also the possibility of adding > new named events other than "local" and "total" if we find that some > kinds of event don't fit these categories. Not just new names, new scopes too. Patches coming later this year that would present: $ cd sys/fs/resctrl $ cat mon_data/mon_PKG_00/llc_stalls 779762866739 I.e. a way to cheaply collect some "perf" like events across all CPUs on a package that executed jobs with a specific RMID. Of course this can be done with perf today, but the cost to collect this data from heavily multi-threaded workloads that context switch rapidly is very high. -Tony
