This works fine for a relatively small number of CPUs, but not when you have dozens, even hundreds, of CPUs competing for access to the shared memory bus.

• 这种方式非常适用于CPU数量相对较少的情况,但不适用于具有几十个甚至几百个CPU的情况,因为这些CPU会相互竞争对共享内存总线的访问。