Messages in this thread | | | From | kamezawa.hiroyu@jp ... | Date | Sun, 7 Sep 2008 01:05:42 +0900 (JST) | Subject | Re: Re: Re: [PATCH] [RESEND] x86_64: add memory hotremove config option |
| |
----- Original Message ----- >>Having said that, i have my doubts about its generic utility (the power >>saving aspects are likely not realizable - nobody really wants DIMMs to >>just sit there unused and the cost of dynamic migration is just >>horrendous) - but as long as it's opt-in there's no reason to limit the >>availability of an in-kernel feature artificially. > >Nobody ? maybe just a trade-off problem in user side. >Even without DIMM hotplug or DIMM's power save mode, making a DIMM idle >is of no use ? I think memory consumes much power when it used. >Memory Hotplug and ZONE_MOVABLE can make some memory idle. >(I'm sorry if my thinking is wrong.) > But I have to point out HDD access consumes far power than memory. That's trade-off problem depends on usage, anyway.
Thanks, -Kame
| |