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Re: [Xen-devel] [RFC] Lightweight socket communication between domainsin

To: "김강호" <sunnykuz@xxxxxxxxx>
Subject: Re: [Xen-devel] [RFC] Lightweight socket communication between domainsin a single machine
From: "Zhu Han" <schumi.han@xxxxxxxxx>
Date: Wed, 9 May 2007 21:44:19 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
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HI,

I'm quite curious how Xway find out whether the peer is on the same
host or on another host? Does the switch provide such capability?

On 5/3/07, 김강호 <sunnykuz@xxxxxxxxx> wrote:
Dear Ian Pratt.

Thanks for your attention.

I attached a PPT file that has some note on the implementation, comparing to
XenSocket.
In each slide of the PPT, I wrote a few lines of slide note. Please read the
note for more details.
Since I don't know much about XenSocket I comapred only a few features that
I'm interested in.

I know that this summary slide is not enough to understand the whole things
of Xway.
However, let's start discussion on Xway as well as XenSocket.


2007/5/1, Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>:
> > I'd like to introduce a socket communication facility optimized for
> > sending and receiving data between domains in a single machine, named
> > Xway.
>
> Cool.
> Please can you write a few notes on the implementation, comparing and
> contrasting to XenSocket:
>
http://www.xensource.com/files/xensummit_4/SuzanneMcIntosh_XenSummit_200
> 7.pdf
>
> I'd like to get a reliable inter-domain byte stream protocol in to
> mainline Xen. Ideally, there'd be a story on remoting it if the VM's got
> migrated to different nodes e.g. tunnelled over TCP or SDP.
>
> Ian
>
> > Xway is a network module that enables socket programs running on
> > virtual machines in a single machine to communicate each other
> > efficiently though socket interface. Xway shows better socket
> > communication latency and bandwidth than the native socket of Xen.
> Xway
> > also provides binary compatiblity for socket interface, so that the
> > socket programs don't have to be recompiled to exploit the advantages
> > of Xway.
> > We have tested the binary compatiblity for a couple of programs such
> as
> > ssh, vsftp, proftp, apache, and mysql.
> > Those programs works well without any recompilication or modification
> > to the source codes as we expected.
> >
> > The main schemes of Xway are as follows:
> > 1) shared memory between domains
> > 2) bypassing TCP/IP and Domain 0
> > 3) dual channel approach dividing data send/receive and others on a
> > socket
> >
> > The implementation of Xway can be found at
> > http://sourceforge.net/projects/xway.
> > It consists of  kernel patch, a kernel module, and a user daemon.
> >
> > Please evaluate Xway and comments on it .
> > Feel free to contact me if you meet problems when installing and
> > evaluating it.
> >
> >
> > Thank you  in advance.
> >
> >
> > ----------------------------------------------------
> >
> > Kang-ho Kim
> >
> > Senior Member of Engineering Staff
> >
> > System Software Research Team/Internet Server Group
> > Digital Home Research Division/Electronics and Telecommunications
> > Research Institute
> >
> > 161 Gajeong-dong, Yuseong-gu, Daejeon, 305-350 KOREA
> > Phone : 82-42-860-6226
> >
> > Fax : 82-42-860-6699
> > Mobile : 82-10-4433-8538
> >
> > E-mail : khk@xxxxxxxxxx, sunnykuz@xxxxxxxxx
> > ----------------------------------------------------
>
>


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--
best regards,
hanzhu
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