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Date:      Wed, 2 Jan 2019 19:31:50 +0800
From:      Erich Dollansky <freebsd.ed.lists@sumeritec.com>
To:        Andrea Venturoli <ml@netfence.it>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: [SOLVED] Re: now on Ryzen performance
Message-ID:  <20190102193150.720b5486.freebsd.ed.lists@sumeritec.com>
In-Reply-To: <2b6e1a69-28fa-dd6a-f691-a3347aac8ae3@netfence.it>
References:  <42a7a149-fa6b-390f-eb13-e10b437baaf7@netfence.it> <20181204122348.131f9471.freebsd.ed.lists@sumeritec.com> <3cef02cc-fc6a-4570-c374-6f8c8ee3d192@netfence.it> <20181204192129.622c8779.freebsd.ed.lists@sumeritec.com> <2c474b0c-46c3-72dd-ca1f-02edbec41673@netfence.it> <accb4fc5-b23e-1a5e-f237-ba2ff6aba715@netfence.it> <2b6e1a69-28fa-dd6a-f691-a3347aac8ae3@netfence.it>

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Hi,

On Thu, 27 Dec 2018 09:18:20 +0100
Andrea Venturoli <ml@netfence.it> wrote:

> On 12/21/18 5:40 PM, Andrea Venturoli wrote:
> 
> > Having powerd running or not does not make any difference.  
> 
> After further investigation/testing, powerd is the culprit.
> Earlier I tried stopping it and I confirm it makes no difference; now
> I realize just starting it bring the CPU down by a factor of 50%
> until rebooting.
> 
> After disabling it in /etc/rc.conf my machine is behaving properly.
> 
> I'll try enabling it again when I'll upgrade to 12 (although that
> might happen not so soon).

disabling powerd on FreeBSD 12.0 cuts 2h away from a build world. The
downside is that the CPU runs some 15K warmer.

I know of the limitations powerd has, but these are real huge
limitations compared to what powerd saves.

Erich



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