Date: Mon, 25 Jul 2016 01:54:26 +0000 (UTC) From: Dustin Marquess <dmarquess@gmail.com> To: tech-lists <tech-lists@zyxst.net>, Shane Ambler <freebsd@shaneware.biz>, <freebsd-virtualization@freebsd.org> Subject: Re: some bhyve guests showing high load on host Message-ID: <CCED15396D3461DF.2F2C2BBF-90BC-484D-98B9-57356054683C@mail.outlook.com> In-Reply-To: <57956EA0.3090007@ShaneWare.Biz> References: <e899fc63-8676-ca81-127a-1ac7ac8acb6d@zyxst.net> <57956EA0.3090007@ShaneWare.Biz>
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Another thing I've seen before is that if there's a lot of broadcast traffic on the network, that seems to increase CPU on the bhyve process.
-Dustin
On Sun, Jul 24, 2016 at 8:48 PM -0500, "Shane Ambler" <FreeBSD@shaneware.biz> wrote:
On 25/07/2016 02:10, tech-lists wrote:
> Hi,
>
> Why is WCPU so high? The guests corresponding to these processes are all
> linux guests; they aren't showing much load at all (0.05-0.1). Given
> this fact, I'm at a loss as to what to debug or how.
How are you starting your bhyve's? Are you using the -H option?
From man bhyve -
-H Yield the virtual CPU thread when a HLT instruction is
detected. If this option is not specified, virtual CPUs will
use 100% of a host CPU.
--
FreeBSD - the place to B...Software Developing
Shane Ambler
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