Difference between revisions of "Template:Slow"
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| − | :<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. | + | :<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 [[Issue:Modifiedby and createdby produce inefficient SQL|bug report]].) |
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== Background == | == Background == | ||
Latest revision as of 16:23, 5 February 2013
- 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.
