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

["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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