On 4/3/19, 11:34 AM, "Mattias Rönnblom" <mattias.ronnb...@ericsson.com> wrote:
On 2019-04-03 20:17, Venky Venkatesh wrote:
> Hi,
> I am using the DSW code from 18.11 with the default settings for all the
#defines. Here are some more details:
> I have an 8 port system with 1 queue.
> All ports can inject events. Port 0 and 7 inject events rarely.
> Ports 1-6 are linked to the queue and hence dequeue events.
>
> I see that in steady state the total number enqueues into the system is
much greater than the total number of dequeues.
> eventdev deq#: 1948491 enq#: 1949007
>
If you have more enqueues than dequeues, it means there are events in
flight in the scheduler. In the above case, it's roughly 516 events,
which sounds perfectly healthy and normal. I say roughly, because
there's no way to take a consistent, global snapshot of all xstats counters.
[VV]: This is in steady state i.e. there are no more events being injected into
the system. So shouldn’t everything get drained out at some point?
You will see a higher value than this on dev_credits_on_loan, because
the ports will borrow (and return) credits in chunks of 64 to the shared
pool, for efficiently reasons.
> However when I dump some of the data structure counters it doesn’t appear
to be stuck. What may be going on?
I'm guessing it doesn't appear stuck because it's not stuck.
/M
