Bug #78076 [Com]: Opcache greatly increases memory usage.

Edit report at https://bugs.php.net/bug.php?id=78076&edit=1 ID: 78076 Comment by: tyler dot bannister at remote-learner dot net Reported by: tyler dot bannister at remote-learner dot net Summary: Opcache greatly increases memory usage. Status: Open Type: Bug Package: opcache Operating System: Centos 7.4.1708 PHP Version: 7.2.18 Block user comment: N Private report: N New Comment: I've continued testing the problem, and on the command line I was able to stop the memory explosion in my test script by setting opcache.file_cache_only=0. However, I only enabled that setting in the first place to deal with the problem of running out of memory with the Moodle installer. So the issue isn't exclusive to having file_cache_only enabled, but maybe that setting makes the problem worse? The minimal number of non-default settings to replicate (on my now Centos 7.6.1810 with PHP 7.3.5 system) seems to be: opcache.enable=1 opcache.enable_cli=1 opcache.file_cache="/var/lib/php/cli-opcache" opcache.file_cache_only=1 I was also able to replicate the problem on Ubuntu 18.04.2 with PHP 7.2.17: Opcache enabled with opcache.file_cache_only enabled: Starting Memory:389008 Ending Memory:7860232 Opcache enabled with opcache.file_cache_only disabled: Starting Memory:388432 Ending Memory:388432 Opcache disabled: Starting Memory:389992 Ending Memory:390144 Previous Comments: ------------------------------------------------------------------------ [2019-05-28 15:43:12] tyler dot bannister at remote-learner dot net PHP 7.28 actual output: Opcache enabled: Starting Memory:385248 Ending Memory:7856480 Opcache disabled: Starting Memory:386104 Ending Memory:386232 PHP 7.3.5 actual output: Opcache enabled: Starting Memory:389112 Ending Memory:8450224 Opcache disabled: Starting Memory:389904 Ending Memory:390088 ------------------------------------------------------------------------ [2019-05-28 15:13:54] cmb@php.net Thanks! ------------------------------------------------------------------------ [2019-05-28 15:09:32] tyler dot bannister at remote-learner dot net I was able to confirm the problem also exists in PHP 7.2.18. ------------------------------------------------------------------------ [2019-05-28 10:24:32] cmb@php.net PHP 7.1 receives only security fixes. Can you reproduce the issue with any of the actively supported PHP versions[1]. [1] <https://www.php.net/supported-versions.php> ------------------------------------------------------------------------ [2019-05-27 21:28:19] tyler dot bannister at remote-learner dot net Related To: Bug #76982 ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=78076 -- Edit this bug report at https://bugs.php.net/bug.php?id=78076&edit=1