[R] Order of messgaes/ missing messages

Murray Jorgensen maj at stats.waikato.ac.nz
Thu Aug 5 04:25:35 CEST 2004

The TCP protocol sends a message as a stream of packets. When packets 
are lost over a particular link in the path from the sending machine at 
ETHZ to a recipient parts of the message will be re-transmitted. A 
message sent after another message can arrive before it if it 
experiences less packet loss on its path through the network. It's 
statistical, you see!

Murray Jorgensen

hadley wickham wrote:

>>Note that if this bothers you then you could try a web-based
>>email systems (e.g. yahoo, hotmail, etc.) to receive your r-help
>>messages since the path to any of them would be independent of your
>>particular location on the net.
> I use gmail and still often recieve replies before the original
> message.  Why should using webmail make a difference?  Surely it's the
> r mailing list server that does all the sending (apart from specific
> individual replies)?  And the listserve must recieve the reply after
> the original, so it seems to me that it must be the time it takes to
> get between the server and you that is varying.  Or is the listserve
> sitting on some emails before sending them?  One test would be to see
> if we recieve emails in the same order.
> Hadley
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Dr Murray Jorgensen      http://www.stats.waikato.ac.nz/Staff/maj.html
Department of Statistics, University of Waikato, Hamilton, New Zealand
Email: maj at waikato.ac.nz                                Fax 7 838 4155
Phone  +64 7 838 4773 wk    +64 7 849 6486 home    Mobile 021 1395 862

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