Encoding is a CPU-intensive operation. Whilst encoding, using optimised code is crucial. In this short article I will explain how I gained a 300% speed boost when encoding DVDs and will show how having the program’s sources and being able to talk to the maintainers sometimes really, really helps. Welcome to doing things “the GNU/Linux way”.

While gzip is the standard Unix tool when it comes to compression, there are other tools available and some of them are performing better than gzip in terms of compression ratio.

Compression is compression is compression. Right? Wrong.

The first official announcement of the Document Freedom Day: Introducing the Document Freedom Day: "On 26 March 2008, the Document Freedom Day will provide a global rallying point for Document Liberation and Open Standards.

LZMA is an improved version of famous LZ77 compression algorithm. It was improved in way of maximum increasing of compression ratio, keeping high decompression speed and low memory requirements for decompressing. lzma command line tool has a similar interface to gzip(1) and bzip2(1) and is intended to make use of LZMA compression easy for the users who are already familiar with gzip and bzip2.

"The Document Freedom Day (DFD) is a global day for Document Liberation with grassroots action for promotion of Free Document Formats and Open Standards in general. The DFD was initiated and is supported by a group of organisations and companies, including, but not limited to, the Free Software Foundation Europe, ODF Alliance, OpenForum Europe, IBM, Red Hat and Sun Microsystems, Inc. On 26 March 2008, the Document Freedom Day will provide a global rallying point for Document Liberation..."

Document Freedom Day (DFD) is a global grassroots effort to promote and build awareness of the importance of free document formats in particular and open standards in general. If you have ever received a document from a friend that your software could not open, then you know the frustration of proprietary formats.

anonymous supporters of OOXML use Domains by Proxy registar in order to register a site with a very similar address of Document Freedom Day's. The OOXML support site is Document Freedom Day **dot com** and redirects to a well known astroturf site which pretends to be a community of OOXML supporters.

Earlier this month we delivered benchmarks comparing the ZFS, EXT4, and Btrfs file-systems from both solid-state drives and hard drives. In this article we have our Btrfs test results when the zlib compression mount option was enabled for looking at the SSD compression performance.