I'm most excited about "web worker" background processes.
最激动人心的莫过于“webworker”后台进程。
In both cases an instance is a combination of background processes and Shared memory.
在这两者之中，实例都是指后台进程与共享内存的组合。
For example, three instances in one machine will require three set of background processes.
例如，同一台计算机上的三个实例就需要三组后台进程。
Bgnice: Run all processes in the background at a lower priority.
bgnice：在后台以更低的优先级运行所有进程。
Bgnice: Run all processes in the background at a lower priority.
bgnice：在后台以更低的优先级运行所有进程。
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