On Wed, Feb 19, 2025 at 4:24 AM Markus Armbruster <arm...@redhat.com> wrote:

> Peter Xu <pet...@redhat.com> writes:
>
> > On Tue, Feb 18, 2025 at 10:39:55AM +0800, yong.hu...@smartx.com wrote:
> >> From: Hyman Huang <yong.hu...@smartx.com>
> >>
> >> When the developer is examining the time distribution of
> >> the migration, it is useful to record the migration throttle
> >> timestamp. Consequently, include the migration throttle event.
> >
> > Would trace_cpu_throttle_set() work too?  That can provide a timestamp
> and
> > also the new percentage of throttle.
> >
> > I don't feel strongly that we must not introduce qmp events for
> debugging,
> > but allowing that to happen means we can get tons of events at last.. as
> > people can start requesting many more events, and we'll need one way to
> > justify them at last.
> >
> > One way to justify events can be that it could be consumed by mgmt.  On
> > that, this one I'm not yet sure.. so ideally tracepoints could work
> already.
>
> Good point.
>
>
Ack
-- 
Best regards

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