Date: Thu, 5 Jul 2018 14:34:00 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: Greg V <greg@unrelenting.technology> Cc: Stefan Parvu <sparvu@kronometrix.org>, freebsd-arm@freebsd.org Subject: Re: RPI3B+ cpu frequency Message-ID: <20180705123359.GA90906@cicely7.cicely.de> In-Reply-To: <1530697756.1544.0@hraggstad.unrelenting.technology> References: <087D6629-FB9A-476A-9455-BBB6D4F802C0@kronometrix.org> <1530697756.1544.0@hraggstad.unrelenting.technology>
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On Wed, Jul 04, 2018 at 12:49:16PM +0300, Greg V wrote: > > > On Wed, Jul 4, 2018 at 7:40 AM, Stefan Parvu <sparvu@kronometrix.org> > wrote: > >Hi, > > > >I understood the last RPI3B+ ships with a 1.4GHz 64-bit cpu. Right ? > >Booting FreeBSD 12.0 > >current shows that I have access only to 600MHz. A bit confused, > >since this was happening as > >well on older models, if Im not wrong: do I need to turn on the Turbo > >mode to get access to > >the full speed of the CPU or what ? > > > >Why FreeBSD does not boot and by default use the CPU at 1.4GHz ? > > Hi! You should run the 'powerd' service to make it boost to max > frequency under load. Interesting, didn't know it defaults to the llower freq. On a normal 3 model (it was running at 600): dev.cpu.0.freq_levels: 1200/-1 600/-1 dev.cpu.0.freq: 1200 On another normal 3 model (it only has 1200): dev.cpu.0.freq_levels: 1200/-1 dev.cpu.0.freq: 1200 The strange thing about this difference is that the second is running a cloned image, so theoretically it should also offer 600MHz. Maybe the boards were from a different batch. The second without 600MHz is remote, so I can't do any visual inspections. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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