[dpdklab] RE: rte_service unit test failing randomly

[Honnappa Nagarahalli]

<snip>

> > >
> > > On 2022-10-06 10:18, Morten Brørup wrote:
> > > >> From: Mattias Rönnblom [mailto:mattias.ronnblom at ericsson.com]
> > > >> Sent: Thursday, 6 October 2022 09.51
> > > >>
> > > >> On 2022-10-06 08:53, Morten Brørup wrote:
> > > >
> > > > [...]
> > > >
> > > >>> I have been wondering how accurate the tests really are. Where can
> > > I
> > > >> see what is being done to ensure that the EAL worker threads are
> > > fully
> > > >> isolated, and never interrupted by the O/S scheduler or similar?
> 
> [...]
> 
> > Back to the topic of unit testing, I think we need to consider their purpose and
> where we expect them to run.  Unit tests are run in automated environments,
> across multiple CI systems, i.e. UNH-IOL Community Lab, GitHub, etc.  Those
> environments are typically virtualized and I don't think the unit tests should
> require turning down to the level of CPU clock ticks.  Those tests are likely better
> suited to dedicated performance environments, where the complete host is
> tightly controlled, for the purpose of repeatable and deterministic results on
> things like packet throughput, etc.
> 
> Excellent point, Lincoln. Verifying the performance of the surrounding runtime
> environment - i.e. the host running the tests - is not unit test material, it belongs
> with the performance tests.
IIRC, the unit tests were separated into perf tests and non-perf tests. The perf tests were meant to be run on bare metal systems in the lab.

> 
> So, how do I add a test case to the performance test suite? Is there a guide, a
> reference example, or any other documentation I can look at for inspiration?
> 
> NB: This is a good example of yesterday's techboard meeting discussion... I'm a
> DTS newbie wanting to contribute with a new test case, how do I get started?
> 
> If no such documentation exists, could someone please point at a couple of files
> representing what needs to be added?
In the current DTS, you can look at some documentation at doc/dts_gsg/usr_guide/intro.rst and look at hello world test case. You can also look at tests/TestSuite_hello_world.py and test_plans/hello_world_test_plan.rst. 

>