From: Bruce Richardson <bruce.richardson@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: David Marchand <david.marchand@redhat.com>,
"Burakov, Anatoly" <anatoly.burakov@intel.com>,
dev <dev@dpdk.org>, Hemant Agrawal <hemant.agrawal@nxp.com>
Subject: Re: [dpdk-dev] [PATCH] tailq: secondary process may not have all tailq available
Date: Thu, 25 Mar 2021 16:14:08 +0000 [thread overview]
Message-ID: <20210325161408.GC1589@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20210325090551.6c704060@hermes.local>
On Thu, Mar 25, 2021 at 09:05:51AM -0700, Stephen Hemminger wrote:
> On Thu, 25 Mar 2021 15:16:47 +0100
> David Marchand <david.marchand@redhat.com> wrote:
>
> > On Mon, Jan 18, 2021 at 6:55 AM Hemant Agrawal
> > <hemant.agrawal@oss.nxp.com> wrote:
> > > On 1/14/2021 7:14 PM, David Marchand wrote:
> > > > On Thu, Jan 14, 2021 at 8:24 AM Hemant Agrawal <hemant.agrawal@nxp.com> wrote:
> > > >> Secondary process may not have all the tailq available for
> > > >> mapping, so better to ignore the error.
> > > >>
> > > >> e.g. if the primary process is linked with N libs
> > > >> and secondary process is linked with less number of libs.
> > > >>
> > > >> dpdk-procinfo results into following error:
> > > >> EAL: Cannot initialize tailq: VMBUS_RESOURCE_LIST
> > > > For dpdk-procinfo to complain about vmbus, it means the bus driver has
> > > > been loaded in the secondary, but not in the primary.
> > > > Is this what you intend to do?
> > > >
> > > Yes.
> > >
> > > Typically the customer applications are built/linked with only limited
> > > number of bus, devices
> > >
> > > dpdk-procinfo is getting compiled with default list as part of dpdk
> > > build. so, if customer is trying to use the default dpdk-procinfo with
> > > their application - there will be differences.
> > >
> >
> > Is this a usecase that we support or we want to support?
> > Thanks.
> >
> >
>
> Primary and secondary process have to be built with same DPDK version
> and same configuration values.
I'd like to see support for the information provided by proc-info also
exposed via telemetry callbacks, which would give us an easier way for
tooling to request and process this data. Relying on something using the
multi-process model is always going to have potential issues.
/Bruce
prev parent reply other threads:[~2021-03-25 16:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-14 7:13 Hemant Agrawal
2021-01-14 13:44 ` David Marchand
2021-01-18 5:55 ` Hemant Agrawal
2021-03-25 14:16 ` David Marchand
2021-03-25 16:05 ` Stephen Hemminger
2021-03-25 16:14 ` Bruce Richardson [this message]
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