- WordPress 4.3 introduces a bug which can force a site to its knees. An error in the core code can lead to a huge number of WP CRON jobs being created, as many as 1 per second. It can consume the entire memory available to your site as well as use up all or most of its CPU resources.
- To fix this problem immediately, two steps are necessary:
- (1) Update the plugin to v4.3.003
- (2) Edit a core file located at wp-includes/taxonomy.php and change line 4448 as follows:
wp_schedule_single_event( 'wp_batch_split_terms', time() + MINUTE_IN_SECONDS );
wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_batch_split_terms' );