[Freeciv-Dev] Re: (PR#11068) savegame file compression

["Marko Lindqvist" <marko.lindqvist@xxxxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=11068 >

Per I. Mathisen wrote:
> 
> On Fri, 24 Jun 2005, Marko Lindqvist wrote:
> 
>>bzip2 compressed savegames.
>  
> If you don't mind me asking - why? Bzip2 is very slow.

  Much better compression. Even level 1 bzip2 compression is much better 
than level 9 zlib compression - and faster too.


  Autogame with autosave every turn (ends to failed assert at year 1974):

  compress   compress
  type       level     user time   sys time   total save size

  zlib         6       19m02.824s  0m6.153s   37820858
  bzip2        6       19m38.997s  0m7.280s   16298172
  zlib         9       20m58.824s  0m6.468s   36793579
  bzip2        1       19m34.403s  0m6.218s   24789786

  bzip2 used is old 1.0.2 version and it should be possible to find more 
optimal parameters for freeciv savegame bzip2 compression.


  - ML