[dpdk-dev] [RFC PATCH 0/7] RFC: EventDev Software PMD

[Bruce Richardson]

On Sat, Nov 19, 2016 at 03:53:25AM +0530, Jerin Jacob wrote:
> On Thu, Nov 17, 2016 at 10:05:07AM +0000, Bruce Richardson wrote:
> > > 2) device stats API can be based on capability, HW implementations may not
> > > support all the stats
> > 
> > Yes, this is something we were thinking about. It would be nice if we
> > could at least come up with a common set of stats - maybe even ones
> > tracked at an eventdev API level, e.g. nb enqueues/dequeues. As well as
> > that, we think the idea of an xstats API, like in ethdev, might work
> > well. For our software implementation, having visibility into the
> > scheduler behaviour can be important, so we'd like a way to report out
> > things like internal queue depths etc.
> >
> 
> Since these are not very generic hardware, I am not sure how much sense
> to have generic stats API. But, Something similar to ethdev's xstat(any capability based)
> the scheme works well. Look forward to seeing API proposal with common code.
> 
> Jerin
> 
Well, to start off with, some stats that could be tracked at the API
level could be common. What about counts of number of enqueues and
dequeues?

I suppose the other way we can look at this is: once we get a few
implementations of the interface, we can look at the provided xstats
values from each one, and see if there is anything common between them.

/Bruce