两个内核之间在内部执行上下文切换，但这可以非常快速地完成。
Internally, a context switch is performed between these two kernels, but this can be done quite fast.
操作系统通常可以在相同进程中的不同线程之间更快速地切换(上下文切换)，而不是在不同进程之间切换。
Operating systems can generally switch (context switching) faster between threads of the same process than between different process.
Erlang中的进程内存较小，可快速启动和进行上下文切换。
Processes in Erlang are assumed to be small in memory, fast to start, and fast to context-switch.
Erlang中的进程内存较小，可快速启动和进行上下文切换。
Processes in Erlang are assumed to be small in memory, fast to start, and fast to context-switch.
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