Re: New LinguaPlone releases with large performance improvements

Hanno,

It doesn't affect me directly, but thanks! Great work.

L.

On Tue, Sep 28, 2010 at 19:25, Hanno Schlichting <[email protected]> wrote:
> Hi.
>
> I spent some time in the last days to speedup LinguaPlone again.
> Testing this both locally and over the weekend on a large production
> site looks promising. I have seen rendering times to be cut in half.
> Locally they went down from 370ms to 190ms. On the production site on
> average the rendering times went down from ~2 seconds to ~1 second.
> This only affects view performance and has no impact on editing
> performance.
>
> The changes are released in LinguaPlone 3.2a1 for Plone 3.3 and
> LinguaPlone 4.0a3 for Plone 4.
>
> If you have a large LinguaPlone based site, you might want to test
> this out. Note that this is very new code and marked as alpha, so be
> careful. The test site in question had 6 languages and ~190.000
> content objects in it. The changes I made should be more noticeable
> the higher each of those numbers are.
>
> I'd appreciate feedback from anyone who tests this out. I would expect
> improvements in the 30-50% range.
>
> Note: If you are still using a LanguageIndex and don't need it's
> functionality (fallback from content in sublanguage codes like "de-de"
> to main language codes like "de"), you should replace it with a normal
> FieldIndex. This is the default for new sites created with LinguaPlone
> 3.1+ and will give you very noticeable improvements on its own.
>
> Cheers,
> Hanno
>
> P.S. If you are interested in the actual technical changes, you can
> have a look at http://dev.plone.org/plone/changeset/40202/Products.LinguaPlone/trunk
> and http://dev.plone.org/plone/changeset/40208/Products.LinguaPlone/trunk.
> Basically I side-step the reference catalog search API and operate on
> the actual internal index data structures instead. This lets me
> replace the silly index restriction on the "relationship" index and
> replace it with a more efficient check.
>
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their inputs. A striking fact, known as the complementation theorem,
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