{"id":1171665,"date":"2016-10-02T14:05:13","date_gmt":"2016-10-02T21:05:13","guid":{"rendered":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/slow-database-performance\/"},"modified":"2016-10-02T14:06:09","modified_gmt":"2016-10-02T21:06:09","slug":"slow-database-performance","status":"closed","type":"topic","link":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/slow-database-performance\/","title":{"rendered":"Slow Database Performance"},"content":{"rendered":"

I’m trying to resolve slow database performance on a site.<\/p>\n

The Query Monitor plugin shows all database queries and alerts of slow queries (any query that takes >0.05 seconds). On every page that includes a calendar from The Events Calendar it complains about the following query. It takes 0.3569 seconds.<\/p>\n

SELECT DISTINCT wp_pfh3w2370f_posts.*, MIN(wp_pfh3w2370f_postmeta.meta_value) as EventStartDate, MIN(tribe_event_end_date.meta_value) as EventEndDate
\nFROM wp_pfh3w2370f_posts
\nINNER JOIN wp_pfh3w2370f_postmeta
\nON ( wp_pfh3w2370f_posts.ID = wp_pfh3w2370f_postmeta.post_id )
\nLEFT JOIN wp_pfh3w2370f_postmeta as tribe_event_end_date
\nON ( wp_pfh3w2370f_posts.ID = tribe_event_end_date.post_id
\nAND tribe_event_end_date.meta_key = ‘_EventEndDate’ )
\nWHERE 1=1
\nAND wp_pfh3w2370f_posts.ID NOT IN (12982)
\nAND ( wp_pfh3w2370f_postmeta.meta_key = ‘_EventStartDate’ )
\nAND wp_pfh3w2370f_posts.post_type = ‘tribe_events’
\nAND ((wp_pfh3w2370f_posts.post_status = ‘publish’
\nOR wp_pfh3w2370f_posts.post_status = ‘private’))
\nAND ((wp_pfh3w2370f_postmeta.meta_value >= ‘2016-09-26 00:00:00’
\nAND wp_pfh3w2370f_postmeta.meta_value <= ‘2016-10-03 00:00:00’)
\nOR (tribe_event_end_date.meta_value >= ‘2016-09-26 00:00:00’
\nAND wp_pfh3w2370f_postmeta.meta_value <= ‘2016-10-03 00:00:00’ )
\nOR (wp_pfh3w2370f_postmeta.meta_value < ‘2016-09-26 00:00:00’
\nAND tribe_event_end_date.meta_value >= ‘2016-10-03 00:00:00’ ))
\nGROUP BY wp_pfh3w2370f_posts.ID
\nORDER BY EventStartDate ASC, wp_pfh3w2370f_posts.post_date ASC
\nWP_Query->get_posts()
\n wp-includes\/query.php:3655<\/p>\n

The site has over 4500 events.<\/p>\n

I upgraded the site to 4.2.2.1 (per https:\/\/theeventscalendar.com\/release-events-calendar-pro-4-2-2-1\/) and cleaned up duplicate events from the database using https:\/\/gist.github.com\/elimn\/a998d7b67f6166dab5e17ec071eb35ee.<\/p>\n

I’ve searched the forums and the above query and concerns about database performance come up a lot, but I haven’t found any solutions. The site uses WP Super Cache.<\/p>\n","protected":false},"template":"","class_list":["post-1171665","topic","type-topic","status-closed","hentry"],"yoast_head":"\nSlow Database Performance -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/slow-database-performance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Slow Database Performance -\" \/>\n<meta property=\"og:description\" content=\"I’m trying to resolve slow database performance on a site. The Query Monitor plugin shows all database queries and alerts of slow queries (any query that takes >0.05 seconds). 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The Query Monitor plugin shows all database queries and alerts of slow queries (any query that takes >0.05 seconds). On every page that includes a calendar from The Events Calendar it complains about the following query. It takes 0.3569 seconds. 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