为什么先发制人的多任务处理如此缓慢地进入消费者操作系统？

Preemptive (rather than cooperative) multitasking was a highly-touted feature for PC's in 1996, with its inclusion in Windows 95 for the first time. It was also highly-touted for 2001 Macs when included with OS X. Earlier versions of both these mainstream consumer OS's supported cooperative multitasking.Preemptive (rather than cooperative) multitaski