On Wed 04 Jul 2018 04:54:10 PM CEST, Stefan Hajnoczi wrote:
> Throttle groups consist of members sharing one throttling state
> (including bps/iops limits).  Round-robin scheduling is used to ensure
> fairness.  If a group member already has a timer pending then other
> groups members do not schedule their own timers.  The next group
> member will have its turn when the existing timer expires.
>
> A hang may occur when a group member leaves while it had a timer
> scheduled.

I haven't been able to reproduce this. When a member is removed from the
group the pending request queue must already be empty, so does this mean
that there's still a timer when the queue is already empty?

Berto

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