On Fri, 2 Mar 2007 09:35:27 -0800 Mark Gross <[EMAIL PROTECTED]> wrote:
> > > > Will it be possible to just power the DIMMs off? I don't see much point in > > some half-power non-destructive mode. > > I think so, but need to double check with the HW folks. > > Technically, the dims could be powered off, and put into 2 different low > power non-destructive states. (standby and suspend), but putting them > in a low power non-destructive mode has much less latency and provides > good bang for the buck or LOC change needed to make work. > > Which lower power mode an application chooses will depend on latency > tolerances of the app. For the POC activities we are looking at we are > targeting the lower latency option, but that doesn't lock out folks from > trying to do something with the other options. > If we don't evacuate all live data from all of the DIMM, we'll never be able to power the thing down in many situations. Given that we _have_ emptied the DIMM, we can just turn it off. And refilling it will be slow - often just disk speed. So I don't see a useful use-case for non-destructive states. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
