Opened 6 years ago
Last modified 4 months ago
#47292 new defect (bug)
Heartbeat API cause Apache/PHP to exhaust memory
| Reported by: |
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Owned by: | |
|---|---|---|---|
| Milestone: | Awaiting Review | Priority: | normal |
| Severity: | critical | Version: | 5.2 |
| Component: | Administration | Keywords: | needs-patch |
| Focuses: | performance | Cc: |
Description
WordPress 5.2
Apache/2.4 MPM Prefork (Debian9)
PHP 7.0 Also tried upgrading to PHP 7.2
What you expected to happen:
Apache memory footprint should remain stable.
Steps to reproduce:
Install click-to-deploy-images-wordpress-ha from Google Marketplace.
Upgrade to WordPress 5.2
Import and edit some posts in WordPress Admin
Observe Client side: Examine headers in Chrome Console specifically /wp-admin/admin-ajax.php
Observe Server side on Admin VM : Monitor apache memory with: free -m or htop
Tried:
Upgrading to PHP 7.2.
Tweaks in wp-config.php
define( 'AUTOSAVE_INTERVAL', 600 );
define( 'WP_POST_REVISIONS', false );
define( 'MEDIA_TRASH', true );
define( 'DISABLE_WP_CRON', true );
define( 'WP_MEMORY_LIMIT', '256M' );
Memory Footprint