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Date:      Tue, 14 Jul 2020 09:45:19 +0200
From:      Emmanuel Vadot <manu@bidouilliste.com>
To:        Danilo =?ISO-8859-1?Q?Eg=EAa?= Gondolfo <danilo@freebsd.org>
Cc:        Vincent Milum Jr <freebsd-arm@darkain.com>, freebsd-arm@freebsd.org
Subject:   Re: big.LITTLE status for rk3399/rockpro64?
Message-ID:  <20200714094519.f61b85e267d24c02f6a1c09f@bidouilliste.com>
In-Reply-To: <CAFU7VyNzbFbOP5rMuVEZiMpHs_pdaD3X0Cp0GJRZTyd2pXTHPQ@mail.gmail.com>
References:  <878sfnz61y.wl-bsd@zeppelin.net> <CAOWUMWGY%2B=w%2B9jJ8yhb9Lew6MjGorVquvATgok1_fyRMUBS6vg@mail.gmail.com> <CAFU7VyNzbFbOP5rMuVEZiMpHs_pdaD3X0Cp0GJRZTyd2pXTHPQ@mail.gmail.com>

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On Mon, 13 Jul 2020 19:06:22 +0100
Danilo Eg=EAa Gondolfo <danilo@freebsd.org> wrote:

> On Mon, Jul 13, 2020 at 6:27 PM Vincent Milum Jr <freebsd-arm@darkain.com>
> wrote:
>=20
> > I'm curious about this, too. I recently got the Pinebook Pro up and
> > running, and would like to start testing all 6 CPU cores for doing
> > compilation tasks.
> >
> > On Mon, Jul 13, 2020 at 10:19 AM Josh Howard <bsd@zeppelin.net> wrote:
> >
> > > It looks like it's been a couple of months since there's been any news
> > > around it. Anything in particular still needed as far as testing or
> > > debugging that goes? I have a Rockpro64 and a RockPi4e (though I don't
> > have
> > > that booting yet.) that I could potentially test on.
> > >
> > > Thanks
> > >
> > >
> > > _______________________________________________
> > > freebsd-arm@freebsd.org mailing list
> > > https://lists.freebsd.org/mailman/listinfo/freebsd-arm
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> > >
> > _______________________________________________
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> >
>=20
> The number of CPUs was limited here
> https://svnweb.freebsd.org/base?view=3Drevision&revision=3D360321
>=20
> If you remove the hw.ncpu from your loader.conf you'll be able to use all
> the 6 cores.
>=20
> Although the commit message mentions a "known issue" with the big.LITTLE
> architecture, I was able to use all the 6 cores to rebuild the entire
> system and I didn't face any issue.
>=20
> Maybe manu@ could give us some context about that.

 On rockpro64 it was (it's been a while since I've tested) very easy to
trigger a panic doing anything usb related (sometimes just inserting a
usb thumb drive would triggers it). This is why I've disabled the big
cores on the rockpro64 image.

--=20
Emmanuel Vadot <manu@bidouilliste.com>



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