[wp-hackers] Profiling Wordpress filters and actions

[Jacob Santos]

I see so your example involves the hooks and not the Plugin API itself. 
It is somewhat difficult to optimize the Plugin API. Well, you could 
just use plugins which use functions instead of classes or classes that 
use static methods.

Jacob Santos

Johan Eenfeldt wrote:
> Hi,
>
> I've spent some time recently profiling the performance of filters and
> actions in Wordpress and thought I should write down some of what I've
> found in the event that anyone else is interested.. :)
>
> Summary[1]:
> Filters take ~12% of the total page creation time on home page, 63% on
> a page with 400 comments.
>
> The most expensive ones are, without any competition, the ones in
> (among other places) 'the_content' and 'comment_text'. They take 6.2%
> of total time on homepage, 62.2% on a page with 400 comments (this
> used to be ~82% until someone changed convert_smilies() :) ).
>
> If you want spend some effort optimizing things and make it count this
> is the list: wptexturize 18%, wpautop 17%, make_clickable 14%,
> convert_smilies 10% (used to be 55%).
>
> That is percentage of total page creation time on that 400 comments page.
>
> Actions take almost no time.
>
> Numbers overview[2]:
>
> Loadtime homepage:
> v2.6.5: 0.440s, Filters/Actions: 0.073s (16.6%), Db: 0.032s (7.3%)
> Trunk: 0.436s, Filters/Actions: 0.052s (11.8%), Db: 0.031s (7.1%)
>
> Loadtime post with 403 comments:
> v2.6.5: 7.052s, Filters/Actions: 5.856s (83%), Db: 0.033s (0.5%)
> Trunk: 3.439s, Filters/Actions: 2.174s (63.2%), Db: 0.036s (1%)
>
> Thank you for reading,
> Johan
>
> [1] Measured current trunk (10331) with all plugins turned of, except
> homebrew profiling. Numbers vary quite a bit between pageloads but
> percentages stay pretty even. The profiling adds up to ~5% on total
> time, should be mostly outside the filter numbers. This is just from
> my computer at home. Beware of statistics.
> [2] Remember [1].
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