[Etoys] zip optimization results
karl.ramberg at comhem.se
Thu Apr 10 16:58:54 EDT 2008
Bert Freudenberg wrote:
> On 10.04.2008, at 06:05, Ties Stuij wrote:
>> I got some interesting results from fiddling with various project
>> zipping strategies on the XO.
>> Basically using only the unzipped project file, big projects load
>> about 3 times faster than the doubly zipped alternative (where the
>> project zip bundle is not compressed); which is the way project files
>> are stored now.
>> Numbers are in seconds, horizontally we see the zipping methods and
>> vertically three different projects. On a clean 3.0 image, loaded with
>> our customizations and luke's speed patch.
>> pr pr.gz.zip0 pr.zip0 pr.zip pr.gz
>> tr 37 1:20 1:29 1:29 46
>> c10 30 1:15 1:23 1:23 40
>> shp 18 30 32 36 20
>> where tr, c10, shp are different projects
>> pr = non-gzipped stand-alone .pr file
>> pr.gz.zip0 = gzipped .pr file in uncompressed zip archive
>> pr.zip0 = non-gzipped .pr file in uncompressed zip archive
>> pr.zip = non-gzipped .pr file in compressed zip archive
>> pr.gz = gzipped stand-alone .pr file
> I just reformatted your table for my own understanding. So apparently
> avoiding the zip-archive part is paramount for performance. We should
> figure out what's actually taking so long there ...
> - Bert -
It would be interesting to see how much time it takes to save projects
with the different compressions, too.
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