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Disable Nagle's algorithm in server and client #14

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@neocsr neocsr commented Nov 7, 2014

This commit disables the Nagle's algorithm to reduce delay when
exchanging values between R and Ruby.

In a particular program I'm working on, I noticed that the exchange
of values between R and Ruby was more time consuming than
the complex calculation itself.

An example of the Naggle impact here:
http://stackoverflow.com/questions/16776975/ruby-socket-performance-characteristics

Ref.
http://svitsrv25.epfl.ch/R-doc/library/gtools/html/setTCPNoDelay.html

  This commit disables the Nagle's algorithm to reduce delay when
  exchanging values between R and Ruby.
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