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Wed, 5 Oct 2022 16:52:45 -0400 (EDT) From: Thomas Monjalon <thomas@monjalon.net> To: Van Haaren Harry <harry.van.haaren@intel.com>, Mattias =?ISO-8859-1?Q?R=F6nnblom?= <mattias.ronnblom@ericsson.com> Cc: David Marchand <david.marchand@redhat.com>, dpdklab <dpdklab@iol.unh.edu>, ci@dpdk.org, Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>, Morten =?ISO-8859-1?Q?Br=F8rup?= <mb@smartsharesystems.com>, Aaron Conole <aconole@redhat.com>, dev <dev@dpdk.org>, "ci@dpdk.org" <ci@dpdk.org> Subject: Re: rte_service unit test failing randomly Date: Wed, 05 Oct 2022 22:52:43 +0200 Message-ID: <3000673.mvXUDI8C0e@thomas> In-Reply-To: <739ee0ca-ccbe-5918-c2af-18e77327a898@ericsson.com> References: <CAJFAV8wcXZ_XhML=64HcV6Zs06PrB=UP9q5M6LWQhGvfLHmjEQ@mail.gmail.com> <739ee0ca-ccbe-5918-c2af-18e77327a898@ericsson.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org 05/10/2022 22:33, Mattias R=F6nnblom: > On 2022-10-05 21:14, David Marchand wrote: > > Hello, > >=20 > > The service_autotest unit test has been failing randomly. > > This is not something new. > > We have been fixing this unit test and the service code, here and there. > > For some time we were "fine": the failures were rare. > >=20 > > But recenly (for the last two weeks at least), it started failing more > > frequently in UNH lab. > >=20 > > The symptoms are linked to places where the unit test code is "waiting > > for some time": > >=20 > > - service_lcore_attr_get: > > + TestCase [ 5] : service_lcore_attr_get failed > > EAL: Test assert service_lcore_attr_get line 422 failed: Service lcore > > not stopped after waiting. > >=20 > >=20 > > - service_may_be_active: > > + TestCase [15] : service_may_be_active failed > > ... > > EAL: Test assert service_may_be_active line 960 failed: Error: Service > > not stopped after 100ms > >=20 > > Ideas? > >=20 > >=20 > > Thanks. >=20 > Do you run the test suite in a controlled environment? I.e., one where=20 > you can trust that the lcore threads aren't interrupted for long periods= =20 > of time. >=20 > 100 ms is not a long time if a SCHED_OTHER lcore thread competes for the= =20 > CPU with other threads. You mean the tests cannot be interrupted? Then it looks very fragile. Please could help making it more robust?