On Fri 12-04-19 17:29:04, Yafang Shao wrote: > On Fri, Apr 12, 2019 at 5:09 PM Michal Hocko <mhocko@xxxxxxxxxx> wrote: [...] > > > Then we can do some trace for this memcg, i.e. to trace how long the > > > applicatons may stall via tracepoint. > > > (but current tracepoints can't trace a specified cgroup only, that's > > > another point to be improved.) > > > > It is a task that is stalled, not a cgroup. > > But these tracepoints can't filter a speficied task neither. each trace line output should cotain a pid, no? -- Michal Hocko SUSE Labs
