Scaling (and taking advantage of multiple cores) can be done by using threads instead of processes, but processes (and IPC) have larger overhead than threads. P

Scaling (and taking advantage of multiple cores) can be done by using threads instead of processes, but processes (and IPC) have larger overhead than threads. Processes need more RAM than threads. Google (and Microsoft) argue that using processes make the browser more stable in the sense that if one tab crashes, not the entire browser crashes, too (correct, as long as no deadlock in IPC between the processes occur - which has happened in some past Chrome relases) and makes the browser more secure (but not everybody agrees here). Thus they argue that the overhead of processes over threads is worth it. But if you just want the scalability there are more easy solutions.