Going forward, Multi-process can’t be turned off anymore in Firefox

Mozilla plans to take away configuration choices in upcoming variations of the Firefox net browser that enable customers to disable the browser’s multi-process structure.

Mozilla launched the multi-process architecture in the Firefox web browser in 2016. Firefox would use a number of processes to divide loaded websites between them and use totally different processes for the browser’s personal performance.

While that increased memory usage, it additionally meant that Firefox would change into extra secure in the method and fewer liable to website crashes taking the whole browser with them. Mozilla’s implementation was totally different to Google’s. Chrome makes use of one course of per website, Firefox places multiples websites in a single course of.

Firefox’s Multi-process structure acquired quite a few enhancements over time. Mozilla added more processes to it and introduced a sandbox security feature afterward that relied on it.

firefox multi process cant disable

Mozilla plans to take away two Firefox preferences from any model of the online browser going ahead. The change is planed for Firefox 68.

  • browser.tabs.distant.force-enable — Enforces the usage of multi-process in Firefox if it isn’t enabled by default, e.g. due to accessibility.
  • browser.tabs.distant.force-disable — Disables multi-process in the Firefox net browser.

You in all probability surprise about browser.tabs.distant.autostart, the desire that allows or disables the multi-process structure in Firefox (against implementing a worth like the 2 different preferences do).

Mozilla will limit the desire to true in residence builds. While it’s nonetheless in Firefox, setting it to false in about:config will not have the specified impact anymore as soon as the change lands. The standing of the desire is at all times true in residence builds of Firefox whatever the consumer chosen worth.

In different phrases: going ahead, Firefox customers can’t disable multi-process anymore in the browser. It is unclear in what number of Firefox installations multi-process is disabled. Some customers achieve this to enhance reminiscence utilization or slowness of the browser.

Closing Words

Mozilla doesn’t reveal why it needs to take away the desire on Bugzilla, solely that disabling multi-process mustn’t be “that simple”. Additional data is available in a submit on the Mozilla Dev Platform group:

The broad intention was to make sure that we cease grandfathering customers right into a non-e10s configuration which they
mustn’t run on a day-to-day foundation, on condition that it receives little to no testing and is much less safe.

It was talked about as nicely that Activity Stream breaks if multi-process is disabled. (through Techdows)

I am not significantly keen on modifications that take away consumer selection from any program together with net browsers. Mozilla might be going to get a whole lot of flak for the removing even when it impacts solely a minority of customers of the browser.

Firefox 68 is the subsequent ESR launch of the browser. It is scheduled for a July ninth, 2019 launch.

Now You: What is your tackle the change?

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