Re: [PATCH -next v6 0/2] Make memory reclamation measurable

[Bixuan Cui]

在 2024/3/7 17:26, Michal Hocko 写道:
> > The main reasons for adding static tracepoints are:
> > 1. To subdivide the time spent in the shrinker->count_objects() and
> > shrinker->scan_objects() functions within the do_shrink_slab function. Using
> > BPF kprobe, we can only track the time spent in the do_shrink_slab function.
> > 2. When tracing frequently called functions, static tracepoints (BPF
> > tp/tracepoint) have lower performance impact compared to dynamic tracepoints
> > (BPF kprobe).
> You can track the time process has been preempted by other means, no? We
> have context switching tracepoints in place. Have you considered that
> option?
Let me think about it...

Thanks
Bixuan Cui