On Fri, 13 Oct 2023 21:41:07 +0300 Dmitry Rokosov <ddrokosov@xxxxxxxxxxxxxxxxx> wrote: > This is a simple listener for memory events that handles counter > changes in runtime. It can be set up for a specific memory cgroup v2. > > The output example: > ===== > $ /tmp/cgroup_v2_event_listener test > Initialized MEMCG events with counters: > MEMCG events: > low: 0 > high: 0 > max: 0 > oom: 0 > oom_kill: 0 > oom_group_kill: 0 > Started monitoring memory events from '/sys/fs/cgroup/test/memory.events'... > Received event in /sys/fs/cgroup/test/memory.events: > *** 1 MEMCG oom_kill event, change counter 0 => 1 > Received event in /sys/fs/cgroup/test/memory.events: > *** 1 MEMCG oom_kill event, change counter 1 => 2 > Received event in /sys/fs/cgroup/test/memory.events: > *** 1 MEMCG oom_kill event, change counter 2 => 3 > Received event in /sys/fs/cgroup/test/memory.events: > *** 1 MEMCG oom_kill event, change counter 3 => 4 > Received event in /sys/fs/cgroup/test/memory.events: > *** 2 MEMCG max events, change counter 0 => 2 > Received event in /sys/fs/cgroup/test/memory.events: > *** 8 MEMCG max events, change counter 2 => 10 > > ... > Looks nice to me. Perhaps it should be under ./samples/? I suggest adding a comment to __memory_events_show() reminding people to update this code if new events are added.
