From owner-svn-ports-head@freebsd.org Wed Aug 22 21:46:07 2018 Return-Path: Delivered-To: svn-ports-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E118010971BA; Wed, 22 Aug 2018 21:46:06 +0000 (UTC) (envelope-from sunpoet@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E64E78F051; Wed, 22 Aug 2018 21:46:00 +0000 (UTC) (envelope-from sunpoet@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 26D2B18C99; Wed, 22 Aug 2018 21:46:00 +0000 (UTC) (envelope-from sunpoet@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w7MLjxgo033619; Wed, 22 Aug 2018 21:45:59 GMT (envelope-from sunpoet@FreeBSD.org) Received: (from sunpoet@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w7MLjxIN033618; Wed, 22 Aug 2018 21:45:59 GMT (envelope-from sunpoet@FreeBSD.org) Message-Id: <201808222145.w7MLjxIN033618@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: sunpoet set sender to sunpoet@FreeBSD.org using -f From: Sunpoet Po-Chuan Hsieh Date: Wed, 22 Aug 2018 21:45:59 +0000 (UTC) To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r477841 - head/converters/py-zfec X-SVN-Group: ports-head X-SVN-Commit-Author: sunpoet X-SVN-Commit-Paths: head/converters/py-zfec X-SVN-Commit-Revision: 477841 X-SVN-Commit-Repository: ports MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-ports-head@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: SVN commit messages for the ports tree for head List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Aug 2018 21:46:08 -0000 Author: sunpoet Date: Wed Aug 22 21:45:59 2018 New Revision: 477841 URL: https://svnweb.freebsd.org/changeset/ports/477841 Log: Update pkg-descr and WWW Modified: head/converters/py-zfec/pkg-descr Modified: head/converters/py-zfec/pkg-descr ============================================================================== --- head/converters/py-zfec/pkg-descr Wed Aug 22 21:45:53 2018 (r477840) +++ head/converters/py-zfec/pkg-descr Wed Aug 22 21:45:59 2018 (r477841) @@ -1,10 +1,18 @@ -A fast erasure codec which can be used with the command-line, C, -Python, or Haskell. +The zfec package implements an "erasure code", or "forward error correction +code". -Fast, portable, programmable erasure coding a.k.a. "forward error -correction": the generation of redundant blocks of information such -that if some blocks are lost then the original data can be recovered -from the remaining blocks. The zfec package includes command-line -tools, C API, Python API, and Haskell API. +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 data +can be completely recovered. The algorithm in the zfec package has a similar +effect, but instead of recovering from the loss of only a single element, it can +be parameterized to choose in advance the number of elements whose loss it can +tolerate. -WWW: https://pypi.org/project/zfec/ +This package is largely based on the old "fec" library by Luigi Rizzo et al., +which is a mature and optimized implementation of erasure coding. The zfec +package makes several changes from the original "fec" package, including +addition of the Python API, refactoring of the C API to support zero-copy +operation, a few clean-ups and optimizations of the core code itself, and the +addition of a command-line tool named "zfec". + +WWW: https://github.com/tahoe-lafs/zfec