Bulk convert makes PHP-FPM crash

[jacob-rh]

Hi there,

We're trying to run bulk convert / convert on upload for a site running PHP-FPM and it regularly causes PHP to crash.

I have to restart PHP-FPM service for the site to come back.

Logs say: 18-Jun-2024 14:26:52] NOTICE: [pool www] child 2289644 started [18-Jun-2024 14:27:03] WARNING: [pool www] child 2288025, script '/var/www/html/staging/wp-admin/admin-ajax.php' (request: "POST /wp-admin/admin-ajax.php") executing too slow (11.334608 sec), logging [18-Jun-2024 14:27:03] NOTICE: child 2288025 stopped for tracing [18-Jun-2024 14:27:03] NOTICE: about to trace 2288025 [18-Jun-2024 14:27:03] NOTICE: finished trace of 2288025 [18-Jun-2024 14:27:18] NOTICE: Terminating ... [18-Jun-2024 14:27:18] NOTICE: exiting, bye-bye!

Server details:

• Server architecture | Linux 5.15.0-89-generic x86_64
• Web server | Apache/2.4.52 (Ubuntu)
• PHP version | 8.0.30 (Supports 64bit values)
• PHP SAPI | fpm-fcgi
• PHP max input variables | 2000
• PHP time limit | 120
• PHP memory limit | 512M
• Max input time | 1000
• Upload max filesize | 15M
• PHP post max size | 15M

Any ideas what might be causing this? Never noticed it happening before on sites with the same config.

Cheers.

[nisbet-hubbard]

httpd and php-fpm can definitely be configured to handle the load of bulk convert. The major constraint is how much RAM you’ve got.

The following resources can help you figure out the optimal settings for your machine:

https://cwiki.apache.org/confluence/display/HTTPD/PHP-FPM

https://bz.apache.org/bugzilla/show_bug.cgi?id=53555#c39

https://www.liquidweb.com/blog/apache-performance-tuning-mpm-directives/

https://devcenter.heroku.com/articles/php-concurrency