[wp-trac] [WordPress Trac] #17128: POMO library performance considerations

[WordPress Trac]

#17128: POMO library performance considerations
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 Reporter:  wet          |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  I18N         |    Version:
 Severity:  normal       |   Keywords:
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 Profiling a localized WordPress instance with WPLANG defined as 'de_DE' on
 my testbed shows that loading the .PO files for WP core and TwentyTen
 increases the frontend runtime by about 45 percent and the backend runtime
 by about 30 percent.

 This is the profiling environment:

 * WordPress 3.2-bleeding r17633
 * TwentyTen 1.1
 * No active Plugins
 * Idling webserver on localhost
 * Apache 2.2.9
 * PHP 5.2.6
 * MySQL 5.0.67
 * Xdebug 2.1.1
 * webgrind 1.1
 * Windows 7 SP1

 Without WPLANG defined, runtimes for various code paths are as follows:

 * Front page with 10 simple posts: 2300 ms
 * Admin Dashboard: 3000 ms
 * RSS XML feed output: 1130 ms

 With the de_DE l10n in effect, runtimes increase as such:

 * Front page with 10 simple posts: 4300 ms
 * Admin Dashboard: 4280 ms
 * RSS XML feed output: 2950 ms

 I wonder whether anyone is able to reproduce this grave performance
 degradation. A sample output from webgrind showing various POMO functions
 as the top offenders is attached.

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Ticket URL: <http://core.trac.wordpress.org/ticket/17128>
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