Encountering memory limit errors in cPanel can disrupt various functionalities, leading to malfunctions in features such as webmail and module installations. This article aims to provide insights into diagnosing and resolving memory limit issues in cPanel.
Identifying Memory Limit Errors: When cPanel features malfunction due to memory issues, errors like "Out of memory during request" may appear in the error log located at /usr/local/cpanel/logs/error_log. These errors commonly occur when performing tasks like opening large attachments in webmail or using cPanel's Perl module installer.
Potential Causes: While running out of physical RAM is a legitimate concern, the root cause often lies in cPanel's internal memory limit settings. When a cPanel process exceeds this limit, it gets terminated. Common causes include:
Large Attachments: Opening sizable attachments in webmail applications like Horde and Roundcube can strain memory resources.
Module Installation: Utilizing cPanel's Perl module installer may trigger memory limit errors, especially for resource-intensive installations.
Resolving Memory Limit Issues: To address memory limit errors in cPanel, consider the following solutions:
Adjusting Memory Limits in WHM: Navigate to WHM (Web Host Manager) and access "Tweak Settings." Look for the option to adjust "The maximum memory a cPanel process can use before it is killed off (in megabytes)." Increase this limit to accommodate larger memory requirements. Values less than 128 megabytes cannot be specified, and setting it to "0" disables memory limits.
Modifying cPanel Configuration File: Alternatively, you can adjust the maxmem setting directly in the /var/cpanel/cpanel.config file. Locate the maxmem parameter and adjust its value according to your server's memory requirements.
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