Date: Sun, 26 Jul 2020 10:19:56 -0700 From: Josh Howard <bsd@zeppelin.net> To: freebsd-arm@freebsd.org Subject: Re: big.LITTLE status for rk3399/rockpro64? Message-ID: <87y2n6tcqr.wl-bsd@zeppelin.net> In-Reply-To: <20200714094519.f61b85e267d24c02f6a1c09f@bidouilliste.com> References: <878sfnz61y.wl-bsd@zeppelin.net> <CAOWUMWGY%2B=w%2B9jJ8yhb9Lew6MjGorVquvATgok1_fyRMUBS6vg@mail.gmail.com> <CAFU7VyNzbFbOP5rMuVEZiMpHs_pdaD3X0Cp0GJRZTyd2pXTHPQ@mail.gmail.com> <20200714094519.f61b85e267d24c02f6a1c09f@bidouilliste.com>
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On Tue, 14 Jul 2020 00:45:19 -0700, Emmanuel Vadot wrote: >=20 > On Mon, 13 Jul 2020 19:06:22 +0100 > Danilo Eg=EAa Gondolfo <danilo@freebsd.org> wrote: >=20 > > On Mon, Jul 13, 2020 at 6:27 PM Vincent Milum Jr <freebsd-arm@darkain.c= om> > > 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 n= ews > > > > around it. Anything in particular still needed as far as testing or > > > > debugging that goes? I have a Rockpro64 and a RockPi4e (though I do= n't > > > have > > > > that booting yet.) that I could potentially test on. > > > > > > > > Thanks > >=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 a= ll > > 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. >=20 > 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 > --=20 > Emmanuel Vadot <manu@bidouilliste.com> Yes, anything USB related does seem to cause a panic still. Furthermore, even without any USB device plugged in and hw.ncpu left alone, I've noticed that the system will simply hard lock up after a relatively short period (2= -24 hours) of time on both a Rockpro64 and a RockPi4. Connecting via UART doesn= 't show anything interesting, it just simply stops working.
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