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Date:      Mon, 18 Jun 2018 11:35:56 -0400
From:      Allan Jude <allanjude@freebsd.org>
To:        freebsd-virtualization@freebsd.org
Subject:   =?UTF-8?Q?Re:_kern.hz_=e2=80=93_Windows_aequivalent=2c_high_CPU_usa?= =?UTF-8?Q?ge_on_bhyve_copmared_to_ESXi?=
Message-ID:  <d47250f6-67d2-28c0-cbf3-8b2fdc4f6caa@freebsd.org>
In-Reply-To: <818fd155-0203-868f-96fc-fe68ab13c495@omnilan.de>
References:  <818fd155-0203-868f-96fc-fe68ab13c495@omnilan.de>

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On 2018-06-18 05:06, Harry Schmalzbauer wrote:
> Hello,
> 
> has anybody found out if Windows does something similar as FreeBSD with
> kern.hz when running on a hypervisor?
> 
> I haven't done meaningful measuring, but on bhyve I see 2-digit CPU load
> with idle windows (2012R2) guest.
> I never saw that on ESXi, it's much lower there, whil FreeBSD as guest
> on ESXi is even lower when idle.
> 
> Can somebody confirm this difference?
> Is there a way to spoof hypervisor vendor string (from userland)? Resp.
> has anyone done that to see if windows behaviuor changes?
> 
> Thanks,
> 
> -harry
> 
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What does your bhyve command line invocation look like?

-- 
Allan Jude



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