It's unfortunate, but keeping the CPUs busy makes up for the problem of a CPUcache being cold for a migrated task.
不幸的是，保持CPU繁忙会出现CPU缓存对于迁移过来的任务为冷的情况。
3
In a computer with the contrasting von Neumann architecture (and no CPUcache), the CPU can be either reading an instruction or reading/writing data fROM/to the memory.