4 ms·
From the GP: >[...] but sending interrupts from one CPU to another (to break it out of hlt) is kind of expensive. The replacement is an instruction called mwai
by unsafecast 4y ago
From the GP:
>[...] but sending interrupts from one CPU to another (to break it out of hlt) is kind of expensive. The replacement is an instruction called mwait, which will (like hlt) wake the CPU up on interrupts, but will also wake up the CPU on a write to a specific memory address.