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A decision guide for Firefox's Electrolysis (e10s) multi-process architecture: compare default vs. legacy mode, understand memory/stability trade-offs, validate current state, and tune process counts instead of disabling entirely.
Firefox isolates tabs into a pool of content processes. Here's how to tune the process limit for your RAM budget and verify the result with about:processes and about:support.
An architecture note on Firefox's multi-process design, explaining how it isolates content, enforces trust boundaries, and handles process failures.
firefox