> On Mon, 4 Oct 2010, KOSAKI Motohiro wrote: > > > > The problem with zone reclaim mainly is created for large apps whose > > > working set is larger than the local node. The special settings are only > > > needing for those applications. > > > > In theory, yes. but please talk with userland developers. They always say > > "Our software work fine on *BSD, Solaris, Mac, etc etc. that's definitely > > linux problem". /me have no way to persuade them ;-) > > Do those support NUMA? I would think not. You would have to switch on > interleave at the BIOS level (getting a hardware hack in place to get > rid of the NUMA effects) to make these OSes run right. Sure. It wouldn't. Many opensource userland developers don't like using out of posix API. In the other hand, many proprietery developers don't hesitate it. I don't know reason. Also, I'm not sure evey Corei7 Motherboard have BIOS level numa interleaving. Are you sure? generically, commodity component vendor don't like to equipe additonal firmware feature. It's not zero cost. I think this solusion only fit server vendor (e.g. IBM, HP, Fujitsu). but dunnno. Myself and fujitsu haven't hit this issue. I don't know _every_ motherboard equipement in the world. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>