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pyfec: documentation and licensing

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Zooko O'Whielacronx 2007-01-30 10:36:42 -07:00
parent 9e49ea0249
commit 96a1cc8e93
2 changed files with 30 additions and 6 deletions
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7
pyfec/COPYING
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@ -1,3 +1,10 @@
In addition to the terms of the GNU General Public License, the pyfec package
also comes with a special added permission that if you are obligated to release
a derived work under this licence as per section 2.b, you may delay the
fulfillment of this obligation for up to 12 months.
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991

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pyfec/README.txt
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* Intro
* Intro and Licence
This package implements an "erasure code", or "forward error correction code".
It is licensed under the GNU General Public License (see the COPYING file for
details).
It is offered under the GNU General Public License v2 or (at your option) any
later version, with the added permission that, in the case that you are
obligated to release a derived work under this licence (as per section 2.b of
the GPL), you may delay the fulfillment of this obligation for up to 12 months.
The most widely known example of an erasure code is the RAID-5 algorithm which
makes it so that in the event of the loss of any one hard drive, the stored
@ -124,6 +126,24 @@ See also the filefec.py module which has a utility function for efficiently
reading a file and encoding it piece by piece.
* Dependencies
A C compiler is required. For the Python API, Python version 2.5 is required.
* Performance Measurements
On Peter's fancy Intel Mac laptop (Core Duo 2?), it encoded from a file at
about 6.2 million bytes per second.
On my old PowerPC G4 867 MHz Mac laptop, it encoded from a file at about 1.3
million bytes per second.
On my Athlon 64 2.4 GHz workstation (running Linux), it encoded from a file at
about 3.7 million bytes per second and decoded at about 5.5 million bytes per
second.
Enjoy!
Zooko Wilcox-O'Hearn
@ -131,6 +151,3 @@ Zooko Wilcox-O'Hearn
San Francisco
On Peter's fancy Intel Mac laptop, it did about 6.21 million bytes per second from file.
On my old PowerPC G4 Mac laptop, it did around 1.3 million bytes per second from file.