[openstack-dev] My notes and experiences about OSv on OpenStack

Zhipeng Huang zhipengh512 at gmail.com
Thu Oct 16 06:56:29 UTC 2014


Great let's have some f2f time discussion at Paris. Have you added what u
mentioned in Nova Kilo summit topics?

On Thu, Oct 16, 2014 at 2:54 PM, Gareth <academicgareth at gmail.com> wrote:

> Pusihng it into OpenStack is not a hard job, because for OpenStack
> developers OSv image is a normal qcow2 image. What you need do is enabling
> some Qemu flags in Nova libvirt driver.
>
> yep, I will be there :)
>
> On Thu, Oct 16, 2014 at 2:10 PM, Zhipeng Huang <zhipengh512 at gmail.com>
> wrote:
>
>> Ahhh, that's bad. Do you think there is a need for pushing OSv
>> integration in OpenStack in Kilo cycle? Would you come to Paris Summit?
>>
>> On Thu, Oct 16, 2014 at 1:24 PM, Gareth <academicgareth at gmail.com> wrote:
>>
>>> yes :)
>>>
>>> I planed that if that topic were picked, I could apply that as a formal
>>> project in Intel. But failed...
>>>
>>> On Thu, Oct 16, 2014 at 12:53 PM, Zhipeng Huang <zhipengh512 at gmail.com>
>>> wrote:
>>>
>>>> Hi, I'm also interested in it. You submitted a talk about it to Paris
>>>> Summit right?
>>>>
>>>> On Thu, Oct 16, 2014 at 10:34 AM, Gareth <academicgareth at gmail.com>
>>>> wrote:
>>>>
>>>>>
>>>>> Here is introducing OSv to all OpenStack developers. OSv team is
>>>>> focusing on performance of KVM based guest OS, or cloud application. I'm
>>>>> interested in it because of their hard work on optimizing all details. And
>>>>> I had also worked on deploying OSv on OpenStack environment. However, since
>>>>> my work is only for private interests in off working time, my progress is
>>>>> pretty slow. So I have to share my experience and hope other engineers
>>>>> could join it:
>>>>>
>>>>> # OSv highlights in my mind
>>>>>
>>>>> 1, Super fast booting time means nearly zero down time services, an
>>>>> alternative way to dynamic flavor changing and time improvement for
>>>>> deploying instances in KVM based PaaS platform. 2, Great work on
>>>>> performance. Cloud engineers could borrow experience from their work on
>>>>> guest OS. 3, Better performance on JVM. We could imagine there are many
>>>>> overhead and redundancy in host OS/guest OS/JVM. Fixing that could help
>>>>> Java applications perform closer to bare-metal.
>>>>>
>>>>> # Enabling OSv on OpenStack
>>>>>
>>>>> Actually there should not be any big problems. The steps are that
>>>>> building OSv qcow2 image first and boot it via Nova then. You may face some
>>>>> problems because OSv image need many new Qemu features, such as
>>>>> virtio-rng-io/vhost and enable-kvm flag is necessary.
>>>>>
>>>>> Fortunately, I don't meet any problems with network, Neutron (actually
>>>>> I thought before network in OpenStack maybe hang me for a long time). OSv
>>>>> need a tap device and Neutron does good job on it. And then I could access
>>>>> OSv service very well.
>>>>>
>>>>> # OSv based demo
>>>>>
>>>>> The work I finished is only a memcached cluster. And the result is
>>>>> obvious: memory throughout of OSv based instance has 3 times than it in
>>>>> traditional virtual machines, and 90% of performance on host OS[0][1].
>>>>> Since their work on memcached is quite mature, consider OSv if you need
>>>>> build memcached instance.
>>>>>
>>>>> Another valuable demo cluster is Hadoop. When talking about Hadoop on
>>>>> OpenStack, the topic asked most frequently is the performance on virtual
>>>>> machines. A known experience is higher version Qemu would help fix disk I/O
>>>>> performance[2]. But how  does the overlap in JVM/guest OS? I would love to
>>>>> find that, but don't have so much time.
>>>>>
>>>>> After of all, the purpose of this thread is to bring an interesting
>>>>> topic on cloud performance and hope more and more efficient clusters based
>>>>> on OpenStack (in production use). I don't have so much time on OSv because
>>>>> this just is my personal interest, but I could prove OSv is a valuable way
>>>>> and topic.
>>>>>
>>>>> [0] http://paste.openstack.org/show/121382/
>>>>> [1]
>>>>> https://github.com/cloudius-systems/osv/wiki/OSv-Case-Study:-Memcached
>>>>> [2]
>>>>> https://www.openstack.org/summit/openstack-summit-atlanta-2014/session-videos/presentation/performance-of-hadoop-on-openstack
>>>>>
>>>>> --
>>>>> Gareth
>>>>>
>>>>> *Cloud Computing, OpenStack, Distributed Storage, Fitness, Basketball*
>>>>> *OpenStack contributor, kun_huang at freenode*
>>>>> *My promise: if you find any spelling or grammar mistakes in my email
>>>>> from Mar 1 2013, notify me *
>>>>> *and I'll donate $1 or ¥1 to an open organization you specify.*
>>>>>
>>>>> _______________________________________________
>>>>> OpenStack-dev mailing list
>>>>> OpenStack-dev at lists.openstack.org
>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Zhipeng Huang
>>>> Research Assistant
>>>> Mobile Ad-Hoc Network Lab, Calit2
>>>> University of California, Irvine
>>>> Email: zhipengh at uci.edu
>>>> Office: Calit2 Building Room 2402
>>>> OpenStack, OpenDaylight, OpenCompute affcienado
>>>>
>>>> --
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>>>>
>>>
>>>
>>>
>>> --
>>> Gareth
>>>
>>> *Cloud Computing, OpenStack, Distributed Storage, Fitness, Basketball*
>>> *OpenStack contributor, kun_huang at freenode*
>>> *My promise: if you find any spelling or grammar mistakes in my email
>>> from Mar 1 2013, notify me *
>>> *and I'll donate $1 or ¥1 to an open organization you specify.*
>>>
>>
>>
>>
>> --
>> Zhipeng Huang
>> Research Assistant
>> Mobile Ad-Hoc Network Lab, Calit2
>> University of California, Irvine
>> Email: zhipengh at uci.edu
>> Office: Calit2 Building Room 2402
>> OpenStack, OpenDaylight, OpenCompute affcienado
>>
>
>
>
> --
> Gareth
>
> *Cloud Computing, OpenStack, Distributed Storage, Fitness, Basketball*
> *OpenStack contributor, kun_huang at freenode*
> *My promise: if you find any spelling or grammar mistakes in my email from
> Mar 1 2013, notify me *
> *and I'll donate $1 or ¥1 to an open organization you specify.*
>



-- 
Zhipeng Huang
Research Assistant
Mobile Ad-Hoc Network Lab, Calit2
University of California, Irvine
Email: zhipengh at uci.edu
Office: Calit2 Building Room 2402
OpenStack, OpenDaylight, OpenCompute affcienado
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