Date: Tue, 10 Jun 2014 06:59:54 -0700 From: Peter Grehan <grehan@freebsd.org> To: Willem Jan Withagen <wjw@digiware.nl> Cc: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: Re: Bheve: Slow linux syscalls on AMD Message-ID: <53970F5A.8060900@freebsd.org> In-Reply-To: <5396D18C.8000401@digiware.nl> References: <5388B56D.1000501@digiware.nl> <20140530212900.6B74B6BF@hub.freebsd.org> <53891BC1.9050701@digiware.nl> <53891EAA.8040105@freebsd.org> <538927FC.3000903@digiware.nl> <53939AE2.80804@freebsd.org> <539434B6.6020804@digiware.nl> <CALnRwMQFmQRxg0jWi5tqXFXARsj-sD5F3wAAXdTvNf7%2BVPoezw@mail.gmail.com> <5394817F.4030203@digiware.nl> <53948DA5.4040000@digiware.nl> <53962141.8070702@freebsd.org> <5396D18C.8000401@digiware.nl>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi Willem,
> On 2014-06-09 23:04, Peter Grehan wrote:
>>> Still seeing that a 2 CPU VM is using about 100% of 1 cpu when idleing,
>>> but that is another minor challenge.
>>
>> Fixed in r267305
>
> Ack.
>
> There is still a small difference in behaviour between Linux and
> FreeBSD. But I'd call that negectable...
>
>
> PID SIZE STATE C TIME WCPU COMMAND
> 70250 2075M vmidle 5 0:17 2.69% bhyve: ubuntu-14.04 (bhyve){vcpu 1}
> 70250 2075M vmidle 2 0:22 1.37% bhyve: ubuntu-14.04 (bhyve){vcpu 0}
Thanks - saw similar behaviour on my tiny Sempron but wasn't sure if
it was the slow CPU/clock aliasing etc. Time to bring out KTR and see
what's going on.
later,
Peter.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?53970F5A.8060900>