genbackupdata
=============

genbackupdata creates or modifies directory trees in ways that simulate
real filesystems sufficiently well for performance testing of backup
software. For example, it can create files that are a mix of small text
files and big binary files, with the binary files containing random
binary junk which compresses badly. This can then be backed up, and
later the directory tree can be changed by creating new files, modifying
files, or deleting or renaming files. The backup can then be run again.

The output is deterministic, such that for a given set of parameters the
same output always happens. Thus it is more efficient to distribute
genbackupdata and a set of parameters between people who wish to
benchmark backup software than distributing very large test sets.

Also included are a couple of benchmark programs I've written to measure
aspects of the work genbackupdata does:

* binaryjunk.py compares various ways of generating random binary data

* createfiles.py compares various directory structures when creating
  lots of new files

The home page is: http://braawi.org/genbackupdata/

Legalese:

  Copyright (C) 2007-2011  Lars Wirzenius <liw@iki.fi>
 
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
 
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License along
  with this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
