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More specific hyperlink to architecture.rst from helper.rst. refs #1225

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david-sarah 2010-12-11 21:26:07 -08:00
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@ -10,12 +10,12 @@ The Tahoe Upload Helper
Overview
========
As described in the "SWARMING DOWNLOAD, TRICKLING UPLOAD" section of
`<architecture.rst>`_, Tahoe uploads require more bandwidth than downloads: you
must push the redundant shares during upload, but you do not need to retrieve
them during download. With the default 3-of-10 encoding parameters, this
means that an upload will require about 3.3x the traffic as a download of the
same file.
As described in the `"Swarming Download, Trickling Upload" section of
architecture.rst <architecture.rst#swarming-download-trickling-upload>`_,
Tahoe uploads require more bandwidth than downloads: you must push the
redundant shares during upload, but you do not need to retrieve them during
download. With the default 3-of-10 encoding parameters, this means that an
upload will require about 3.3x the traffic as a download of the same file.
Unfortunately, this "expansion penalty" occurs in the same upstream direction
that most consumer DSL lines are slow anyways. Typical ADSL lines get 8 times