How to enable or disable multi-process mode in Firefox?

Firefox, the popular web browser, utilizes a multi-process architecture known as Electrolysis (e10s) for improved stability and performance. By default, e10s is enabled, meaning each web page opens in its separate process, isolated from the main browser process. This helps prevent crashes and improves responsiveness, especially when dealing with multiple tabs or resource-intensive websites.

Benefits of Multi-process Mode

• Improved Stability: Each website runs in its process, preventing crashes from affecting other tabs or the main browser.
• Enhanced Performance: e10s allows better utilization of system resources like memory, leading to smoother browsing and faster loading times.
• Reduced Memory Usage: By isolating web processes, e10s can minimize overall memory consumption, especially when dealing with multiple tabs.
• Increased Security: Sandboxing each process helps isolate potential security vulnerabilities within a specific tab, preventing them from impacting the entire browser.

Steps to Enable or Disable Multi-process Mode

Note: Multi-process mode is enabled by default in Firefox. If you have disabled it previously, follow these steps to re-enable it:

Step 1: Int the Firefox browser search about:config in the address bar press in the top.

Step 2: The config page will appear with a warning message to proceed with caution and a button “Accept the Risk and Continue”, click on it.

Step 3: In the search bar of the config page search browser.tabs.remote.autostart and set it to true or false by double-clicking.

Steps to Enable/Disable Multi-process Mode

Drawback of Multi-process Mode

• Compatibility with older add-ons: If you rely on specific add-ons incompatible with e10s, disabling it allows them to function correctly.
• Potentially improved performance: On some older machines or with limited resources, e10s might not always perform optimally. Disabling it can help improve responsiveness and reduce resource usage in such cases.
• Troubleshooting: Disabling e10s can be a helpful step in isolating and resolving specific browser issues, especially when related to add-on compatibility or unexpected behavior.

Conclusion

Multi-process mode in Firefox offers significant benefits in terms of stability, performance, and security. However, there might be situations where disabling it becomes necessary for compatibility reasons, troubleshooting purposes, or to address performance issues on specific systems. By understanding the benefits and drawbacks of both options, you can make an informed decision about whether to enable or disable multi-process mode in your Firefox browser.