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RE: [Xen-devel] [RFC] Lightweight socket communication between domainsin a single machine

  • To: "???" <sunnykuz@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Ian Pratt" <Ian.Pratt@xxxxxxxxxxxx>
  • Date: Tue, 1 May 2007 10:12:35 +0100
  • Delivery-date: Tue, 01 May 2007 02:11:51 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AceLteEKfayFeBM1Tkq17CPEgOPS2AAGhG5A
  • Thread-topic: [Xen-devel] [RFC] Lightweight socket communication between domainsin a single machine

> I'd like to introduce a socket communication facility optimized for
> sending and receiving data between domains in a single machine, named
> Xway.

Please can you write a few notes on the implementation, comparing and
contrasting to XenSocket:

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. 


> 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.
> 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
> 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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