Transport protocols and bulk file transfer

["Lawrence D. Dunn" <>]

Stas,
  My apologies- I couldn't attend either (I didn't show one today, as
  this was the "off week" fro our previous every-2-weeks schedule).
  And I didn't catch the email in time.

Again, sorry to miss the call,
Larry
--

At 1:02 PM -0400 9/2/05, stanislav shalunov wrote:
> Attending:
>         Cesar Marcondes
>         Stanislav Shalunov (scribe)
>         Chester Ruszczyk
>         Lisong Xu
>         Ivan Beschastnikh
>
> Injong and Steven said they couldn't attend.
>
> Call started: 12:07PM
>
> >  * Preliminary report on Google-funded summer work.
>
> Cesar did research on internal queuing on Linux and FreeBSD.
> Timestamp a packet as it goes through the kernels (IP queue, UDP
> queue, etc.)., do statistics, and understand the nature of internal
> delay.  All the code and the results are on SourceForge:
> <URL:http://heterovoip.sourceforge.net/>.  Stas: What about Windows?
> Cesar: I'm going to work on that.  Track TSC in libpcap and thrulayd.
> Naturally, no internal breakdown into IP and UDP queue.  Windows
> allows driver development.  One problem is preserving correctness of
> UDP checksum.
>
> Ivan: has been working on implementing a transport protocol:
> <URL:http://fb-fr-ccp.sourceforge.net/>.  Datagram-based protocol.
> The application has functional control of datagram delivery; useful
> for multimedia application.  Tasks this summer: finish specifying the
> protocol (still working on congestion control); implementing a
> user-level library that uses Steven Senger's API.  Can transfer data
> now without congestion control.  Have working file transfer.  The
> future: exact specifications for congestion control.  Use in some
> application.
>
> Chester: after SC2005, would like to try.
>
> >  * Fall Member Meeting: we have a slot reserved on Monday,
> >    September 19, 2005, at 1:30PM.
>
> Will have a telephone.
>
> >  * SC2005 demo plans.
>
> Steven and Stas would like to include Ivan's library in Steven's
> ImmSeg application before then.  Steven was going to start looking at
> Ivan's code in the middle of September.  Ivan will resume work on
> September 23 and will start adding real congestion control to his
> library; believes it is realistic to have it there before November 14.
>
> Chester plans his own demo, which is going to take quite some of his
> time, making it difficult to spare any time to look at anything else.
> Once SC2005 is over, would be interested in looking at Ivan's library
> as well.  Will also send a pointer to the group on eVLBI so Ivan can
> read up some.  Will also probably look at some of the Ivan's
> documentation and code before SC2005 and perhaps provide feedback if
> there's any.
>
> * Additional:
>
> Ivan to look at Cesar's work and understand it.  This is what would be
> used to develop0 noise filtering for delay-based congestion control.
>
> Chester: What about the IETF's recent transport protocols work?  How
> does it relate to what we're doing?  Stas: It's great that the IETF is
> ready to be a bit less incrementalist; the focus of the work here is
> on high-performance transfers (hundreds of Mb/s and single Gb/s),
> while the IETF is still focused on single Mb/s speeds, which makes for
> some difference in approaches.  Stas plans to send something there in
> perhaps two weeks to make them aware of the work here.
>
> Cesar: Speaking of high-performance transfers, was reading some
> discussion of TCP offload engines on Linux mailing lists.  Stas: Isn't
> convinced that these attack the performance problem in the right
> place; a throwback to early Arpanet days, in many ways, with largely
> the same problems (lack of flexibility, difficult bugfixes, extra
> layer between application code and the network, etc.).
>
> * Action items:
>
>   a. All (except Stas, Jeff, and Chet): Review the draft API Steven
>      sent out (v.6.) and get comments to Steven.  [Ongoing.]
>
>   b. Injong: track the COMNET call for papers and keep the group
>      posted when a date has been published.  [Ongoing.]
>
>   c. Injong: Run CFP for congestion control protocols past the
>      transport list and send it to the general public (e.g.,
>      e2e-interest).
>
>   d. Gu: to talk to Bob about license.
>
>   e. Injong: Pushing out the design document.
>
> * Next call: September 19, 2005, 1:30PM US/Eastern (physical meeting
>   in Philadelphia with telephone access).
>
> * Call ended: 12:46
>
> --
> Stanislav Shalunov              http://www.internet2.edu/~shalunov/
>
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