> All good points. How about this text: > > "num_mbm_cntrs": > The number of monitoring counters available for assignment when the > architecture supports mbm_cntr_assign mode. > > Resctrl subsystem provides the interface to count maximum of two memory > bandwidth events per group, from a combination of available total and > local events. Keeping the current interface, users can enable a maximum of > 2 counters per group. User will also have the option to enable only one > counter to the group to maximize the number of groups monitored. Much better. Looks OK to me. New questions: 1) Should resctrl provide a file to tell the user how many free counters are available? They can figure it out by counting all the 'l' and 't' in "mbm_assign_control" and subtracting that from "num_mbm_cntrs". But that seems complex. 2) Even more so because free counters might be different per socket if the user did some "0=tl;1=_" assignments as in one of your examples. Maybe a UI like: $ cat /sys/fs/resctrl/info/L3_MON/free_mbm_cntrs 0=5;1=9 -Tony
