Title: Missing “Split by” option
Last modified: March 31, 2025

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# Missing “Split by” option

 *  Resolved [net](https://wordpress.org/support/users/krstarica/)
 * (@krstarica)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/)
 * What happened to “Split by” year/month/day option suitable for large websites?

Viewing 9 replies - 1 through 9 (of 9 total)

 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18392628)
 * Hi, that option is only available if you select **Plugin** at the Server option
   on Settings > XML Sitemap.
 * When “WordPress” is selected, sitemaps will be split by the number set at **Maximum
   posts per sitemap** set on the Post Types tab.
 * Hope that helps 🙂
 *  Thread Starter [net](https://wordpress.org/support/users/krstarica/)
 * (@krstarica)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18392635)
 * Thanks. How about “daily” split?
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18392651)
 * More split by options will come in the advanced plugin… Looking into dayly and
   weekly split.
 * Do you have very many posts per day?
 *  Thread Starter [net](https://wordpress.org/support/users/krstarica/)
 * (@krstarica)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18397723)
 * Yes, dozens daily.
 * Also a bunch of things need to be optimized, including adding this code to fix
   the slowness:
 *     ```wp-block-code
       add_filter('pre_get_lastpostmodified', array($this, 'pre_get_lastpostmodified'), 10, 3);public function pre_get_lastpostmodified ($lastpostmodified, $timezone, $post_type){	return _get_time( 'gmt', 'date');}
       ```
   
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18398449)
 * When are you seeing slowness? On the sitemap index or on the posts sitemaps? 
   Do you have the option “Automatic priority calculation” activated? That option
   is “expensive” and can make sitemaps slow…
 *  Thread Starter [net](https://wordpress.org/support/users/krstarica/)
 * (@krstarica)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18401647)
 * It’s terribly slow everywhere, primarily because “post_modified” column is not
   present in indexes.
 * Had to comment out a bunch of things.
 * If you are interested in implementing the changes (actually to be able to change
   some things via settings page), I can you send you the older changed version 
   via email.
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18402235)
 * Hi, do you have the options “Automatic priority calculation” and/or “Update the
   Last Modified date on each new comment” activated for any post types?
 *  Thread Starter [net](https://wordpress.org/support/users/krstarica/)
 * (@krstarica)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18407140)
 * We commented out all of that. Including meta box and other unnecessary things.
 * But the largest issue was SQL using “post_modified” field, which is not present
   in indexes.
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18407314)
 * If you set the “Server” option on Settings > XML Sitemap to “WordPress”, do you
   still get the same slowness everywhere?

Viewing 9 replies - 1 through 9 (of 9 total)

The topic ‘Missing “Split by” option’ is closed to new replies.

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 * 9 replies
 * 2 participants
 * Last reply from: [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * Last activity: [1 year, 3 months ago](https://wordpress.org/support/topic/missing-split-by-option/#post-18407314)
 * Status: resolved