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Obsolete:Performance tasks

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This is just a notice board for various performance issues to be solved:

  • wfGetSiteNotice should cache parsed text somewhere
  • Use parsercache for ones with stubthreshold, I guess current link placeholders solve this.
  • Forward-port cpu-time based profiler
  • Hunt down and fix this query: query: SELECT page_id FROM `page` WHERE page_namespace='X' LIMIT N'