On Thu, Oct 10, 2024 at 03:32:08PM -0500, Moger, Babu wrote: > > # cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control > > //0=tl;1=tl; > > > > there aren't separate counts from each of domain 0 and domain 1. > > Yes. There is. Each domain has its own count. I am not sure about your config. I've been reading the code and see better now. There are a bunch (32) of counters per domain. But you have a system-wide allocator. So when making a group you may allocate counters 2 and 3 for total and local respectively. Then configure the local instance of counter 2 on each domain (recording that in the per-domain bitmap) for total bandwidth. Ditto for counter 3 instances on each domain. If the user updates the configuration to stop counting on domain 1. Then the per-domain bitmap is updated to show counters 2 and 3 are no longer in use on this domain. But those counters aren't freed (because domain 0 is still using them). Is there some hardware limitation that would prevent re-using domain 1 counters 2 & 3 for some other group (RMID)? Or is this just a s/w implementation detail because you have a system wide allocator for counters? -Tony
