Template:Slow: Difference between revisions

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Revision as of 04:00, 31 July 2019

Warning: This keyword can produce very slow and inefficient queries on your MediaWiki system, potentially impacting performance for all users. (See bug report.)

Background

This template was written by User:Maiden_taiwan after the DPL createdby keyword hurt performance on his MediaWiki system significantly. On a MediaWiki site with 100,000 articles and 3,000 users, this DPL took 2.5 minutes to run:

<dpl>
namespace=
createdby=someuser
</dpl>

People were making these DPL calls all the time to find out what articles they had created. When two of these ran at once, it significantly hurt wiki performance.

Revision as of 22:38, 18 July 2019 view source wikia:help>Surafbrov mNo edit summary ← Older edit		Revision as of 04:00, 31 July 2019 view source wikia:help>Equazcion No edit summary Newer edit →
Line 1: :<span style="font-weight:bold;color:red;text-decoration:underline;">Warning:</span> This keyword can produce very slow and inefficient queries on your MediaWiki system, potentially impacting performance for all users. (See [[http://followthescore.org/dpldemo/index.php/Issue:~~Modifiedby and createdby produce inefficient~~Modifiedby_and_createdby_produce_inefficient_SQL ~~SQL\|~~bug report]].) <noinclude> == Background ==