Date: Tue, 10 Jun 2014 11:36:12 +0200 From: Willem Jan Withagen <wjw@digiware.nl> To: Peter Grehan <grehan@freebsd.org> Cc: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: Re: Bheve: Slow linux syscalls on AMD Message-ID: <5396D18C.8000401@digiware.nl> In-Reply-To: <53962141.8070702@freebsd.org> 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>
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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}
70296 2075M vmidle 1 0:04 0.00% bhyve: freebsd-10 (bhyve){vcpu 0}
70296 2075M vmidle 4 0:02 0.00% bhyve: freebsd-10 (bhyve){vcpu 1}
Inside the VMs the perception is totally the other way around when just
running top and system processes:
ubuntu14:
load average: 0.01, 0.02, 0.02
FreeBSD:
load averages: 0.11, 0.18, 0.09
So IMHO things get lost tn the margins of (incorrect) measurement.
Next thing to check is how older ubuntu's work. Espacially those with
TLS and a 2.6 kernel. ( I think there is still one release not EOL)
And then start tests for CentOS.
Thanx,
--WjW
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