Hi Reinette, On 3/5/24 11:12, Reinette Chatre wrote: > Hi Babu, > > On 3/4/2024 2:24 PM, Moger, Babu wrote: > >> Based on our discussion, I am listing few examples here. Let me know if I missed something. >> >> mount -t resctrl resctrl /sys/fs/resctrl/ > > When creating examples it may help to accompany it with an overview of > which groups exist. Ok. I can add a line about types of groups before the examples. > >> >> 1. Assign both local and total counters to default group on domain 0 and 1. >> $echo "//00=lt;01=lt" > /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt > > I also think it will be useful to always print a small header that guides > the interpretation. For example, > > $ cat mbm_assign_control > #control_group/monitor_group/flags > ... Ok. Sure > >> >> 2. Assign a total event to mon group inside the default group for both domain 0 and 1. >> >> $mkdir /sys/fs/resctrl/mon_groups/mon_a >> $echo "/mon_a/00+t;01+t" > /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt >> /mon_a/00=t;01=t > > For an example of "+" I think understanding the output will be easier if the "before" view with > existing flags is available. For example, > if it was > $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control > #control_group/monitor_group/flags > /mon_a/00=l;01=l > > then > $echo "/mon_a/00+t;01+t" > /sys/fs/resctrl/info/L3_MON/mbm_assign_control Yes. Makes Sense. > > would result in: > $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control > #control_group/monitor_group/flags > /mon_a/00=lt;01=lt > > An example like above would make it easier to understand how it is different > from using "=" like in example 1. Yes. Sure. > >> >> 3. Assign a local event to non-default control mon group both domain 0 and 1. >> $mkdir /sys/fs/resctrl/ctrl_a >> $echo "/ctrl_a/00=l;01=l" > /sys/fs/resctrl/info/L3_MON/mbm_assign_control > > I think this should be: > $echo "ctrl_a//00=l;01=l" > /sys/fs/resctrl/info/L3_MON/mbm_assign_control Ok. > >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt >> /mon_a/00=t;01=t >> /ctrl_a/00=l;01=l > > ctrl_a//00=l;01=l Yes. > >> >> 4. Assign a both counters to mon group inside another control group(non-default). >> $mkdir /sys/fs/resctrl/ctrl_a/mon_ab/ > > Above will not work. Yes. Missed that. > > $ mkdir /sys/fs/resctrl/ctrl_a > $ mkdir /sys/fs/resctrl/ctrl_a/mon_groups/mon_ab > >> $echo "ctrl_a/mon_ab/00=lt;01=lt" > /sys/fs/resctrl/nfo/L3_MON/mbm_assign_contro > > (watch out for typos in examples) Sure. > >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt >> /mon_a/00=t;01=t >> /ctrl_a/00=l;01=l >> ctrl_a/mon_ab/00=lt;01=lt >> >> 5. Unassign a counter to mon group inside another control group(non-default). >> $echo "ctrl_a/mon_ab/00-l;01-l" > /sys/fs/resctrl/nfo/L3_MON/mbm_assign_control >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt >> /mon_a/00=t;01=t >> /ctrl_a/00=l;01=l >> ctrl_a/mon_ab/00=t;01=t > > ack. > >> >> 6. Unassign all the counters on a specific group. >> $echo "ctrl_a/mon_ab/00=_" > /sys/fs/resctrl/nfo/L3_MON/mbm_assign_control > > (watch for typos) > > Note that this only did unassign on domain 0. Yes. > >> >> $cat /sys/fs/resctrl/info/L3_MON/mbm_assign_control >> //00=lt;01=lt >> /mon_a/00=t;01=t >> /ctrl_a/00=l;01=l >> ctrl_a/mon_ab/00=_;01=_ > > ctrl_a/mon_ab/00=_;01=t > > To address some earlier requirements I think it will be helpful to also > show an example of multiple groups changed with a single write. oh.. ok. Two groups delimeted by "\n". -- Thanks Babu Moger
