On Sat, Aug 6, 2011 at 6:42 AM, Emmanuel Engelhart <emmanuel@engelhart.org> wrote:

Hi,

at Wikimania they were a few discussions about the pertinence to push
ZIM, especially if you think EPUB is already really good supported, it's
also open, it's also compressed, etc. I made (again) a small benchmark
to try to convince the last people who are skeptical.

Here is an example with Simple English Wikipedia without pictures:
* Raw content
    125342 HTML pages
    1.4 GB
* ZIM
    93 MB
    Access time of article "Wikipedia" (HTML only) = 0.012s
* ZIP
    331 MB
    Access time of article "Wikipedia" (HTML only) = 0.035s

Additional infos:
* ZIP random access time is proportional to the count of files, with 3
more HTML files, accessing the same content takes 0.113s (so almost x3)
* Please keep in mind that the test were ran on a Intel(R) Core(TM) i7
CPU X 980 @ 3.33GHz
* They are no images here... which are often bigger and which would be
re-compressed unnecessarily and so bigger in a ZIM
* Articles with 20-30 images are common.
* Benchmark was made with not so much files... The French Wikipedia has
many millions of files

I let you take the conclusion by yourself ;)

Regards
Emmanuel


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