Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Bzip2 chess databases

Author: Dann Corbit

Date: 14:47:52 02/11/02

Go up one level in this thread


On February 11, 2002 at 17:45:22, Ratko V Tomic wrote:

>> Since bzip2 comes with full source code, it should be pretty
>> easy.  Just include the decompressor and concatenate the
>> compressed data to the binary.
>
>
>The bzip2 offers about 30-50% better compression ratios (on color
>graphics) compared to gzip. But the public source implementation
>yields very uneven compression times, going from half the speed
>of gzip/zlib (at best) to 20 (and up) times slower for the
>"wrong" data. To make it work in real time one needs to
>pre-filter the data fed the bzip library so that its input
>has as few repeated character runs as possible. With such
>pre-filtering it works quite well.

It might be nice to submit your improvements back to the open source project.  I
am sure that they would be appreciated world-wide.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.