Messages in this thread | | | Subject | Re: [RFC] (How to) Let idle CPUs sleep | From | Arjan van de Ven <> | Date | Sun, 08 May 2005 12:13:50 +0200 |
| |
On Sun, 2005-05-08 at 13:50 +1000, Rusty Russell wrote: > My preference would be the second: fix the scheduler so it doesn't rely > on regular polling. However, as long as the UP case runs with no timer > interrupts when idle, many people will be happy (eg. most embedded).
alternatively; if a CPU is idle a long time we could do a software level hotunplug on it (after setting it to the lowest possible frequency and power state), and have some sort of thing that keeps track of "spare but unplugged" cpus that can plug cpus back in on demand.
That also be nice for all the virtual environments where this could interact with the hypervisor etc
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |