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From: Thomas Monjalon <thomas@monjalon.net>
To: David Marchand <david.marchand@redhat.com>
Cc: dev@dpdk.org, Olivier Matz <olivier.matz@6wind.com>, "Burakov,
Anatoly" <anatoly.burakov@intel.com>, ktraynor@redhat.com, stable@dpdk.org
Date: Thu, 07 Mar 2019 19:23:02 +0100
Message-ID: <2037140.URYxlzVuUZ@xps>
In-Reply-To: <20190225083359.uzvwejkej3elyqdh@platinum>
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Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v3 2/2] eal: restrict ctrl
threads to startup cpu affinity
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25/02/2019 09:33, Olivier Matz:
> On Wed, Feb 20, 2019 at 04:01:33PM +0000, Burakov, Anatoly wrote:
> > On 19-Feb-19 8:41 PM, David Marchand wrote:
> > > Spawning the ctrl threads on anything that is not part of the eal
> > > coremask is not that polite to the rest of the system, especially
> > > when you took good care to pin your processes on cpu resources with
> > > tools like taskset (linux) / cpuset (freebsd).
> > >
> > > Rather than introduce yet another eal options to control on which cpu
> > > those ctrl threads are created, let's take the startup cpu affinity
> > > as a reference and remove the eal coremask from it.
> > > If no cpu is left, then we default to the master core.
> > >
> > > The cpuset is computed once at init before the original cpu affinity
> > > is lost.
> > >
[...]
> > >
> > > Fixes: d651ee4919cd ("eal: set affinity for control threads")
> > > Cc: stable@dpdk.org
> > > Signed-off-by: David Marchand <david.marchand@redhat.com>
> > > ---
> >
> > Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>
>
> Reviewed-by: Olivier Matz <olivier.matz@6wind.com>
Replaced cpu by uppercase CPU,
and applied, thanks