Package: wordpress
Version: 4.3+dfsg-1
Severity: normal
Tags: upstream
Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate ***
* What led up to the situation?
Wordpress performance degrades over time dues to increasing high CPU usage and
become unusable under moderaate to high loads (20 plus connections)
Finally located thousands of wp_cron entries with numbers as hooks and
wp_batch_split_terms under "Next run" with old date Thu 1970/01/01 00:00:00
Every hit on the site results in more of these cron entries causing
increasingly large database loads of the cron entry from wp_options on every
connection
* What exactly did you do (or not do) that was effective (or
ineffective)?
Applied changes to wordpress/wp-includes/taxonomy.php as per
https://core.trac.wordpress.org/ticket/33423
Line: 4448
wp_schedule_single_event( 'wp_batch_split_terms', time() + MINUTE_IN_SECONDS );
Meant to call
wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_batch_split_terms' );
Ran from theme's functions.php:
add_action("init", "remove_taxonomy_cron_job");
function remove_taxonomy_cron_job()
{
$cron = get_option("cron");
unset($cron["wp_batch_split_terms"]);
update_option("cron", $cron);
}
* What was the outcome of this action?
Restored normal performance
*** End of the template - remove these template lines ***
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 4.1.0-1-amd64 (SMP w/5 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages wordpress depends on:
ii apache2 [httpd] 2.4.16-3
ii ca-certificates 20150426
ii libapache2-mod-php5 5.6.12+dfsg-1
ii libjs-cropper 1.2.2-1
ii libjs-mediaelement 2.15.1+dfsg-1
ii libphp-phpmailer 5.2.10+dfsg-1
ii mysql-client 5.5.44-0+deb8u1
ii mysql-client-5.5 [mysql-client] 5.5.44-0+deb8u1
ii php-getid3 1.9.9+dfsg-2
ii php5 5.6.12+dfsg-1
ii php5-gd 5.6.12+dfsg-1
ii php5-mysql 5.6.12+dfsg-1
Versions of packages wordpress recommends:
ii wordpress-l10n 4.3+dfsg-1
ii wordpress-theme-twentyfifteen 4.3+dfsg-1
Versions of packages wordpress suggests:
pn mysql-server <none>
pn php5-ssh2 <none>
-- Configuration Files:
/etc/wordpress/htaccess changed [not included]
-- no debconf information
