From mboxrd@z Thu Jan 1 00:00:00 1970 From: tgh Subject: Re: Re: NUMA and SMP Date: Thu, 22 Mar 2007 20:13:43 +0800 Message-ID: <460272F7.8030407@ncic.ac.cn> References: <907625E08839C4409CE5768403633E0B018E1879@sefsexmb1.amd.com> <8790346913e7b2e96fdc58199e039895@xensource.com> <45FFDD32.8030607@ncic.ac.cn> <1174398691.5642.43.camel@lapbode42.lrr.in.tum.de> <46008592.5070603@ncic.ac.cn> <1174445110.4426.72.camel@lapbode42.lrr.in.tum.de> <4601D8DE.1070602@ncic.ac.cn> <1174560170.28163.67.camel@lapbode42.lrr.in.tum.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1174560170.28163.67.camel@lapbode42.lrr.in.tum.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Daniel Stodden Cc: Xen Developers List-Id: xen-devel@lists.xenproject.org Thank you for your reply > >> in the smp with adm64 with the hardware of numa, its linux is a smp os >> ,then there is only one node (struct pglist_data) in the os when running >> or there are as many nodes as cpus in the system, does linux smp >> support two or more nodes when running? or in this case linux support >> numa feature? >> > > the number of nodes corresponds to the number of memory areas which > allocators need distinguish. in the case of integrated memory > controllers like amd64, expect to find as many nodes as there are > processors. > > yes, linux has numa support. see linux/Documentation/vm/ > linux has numa support,and in the case of integrated memory controllers like amd64, CONFIG_NUMA should be choice and linux support numa,is it right? if CONFIG_NUMA is not choice ,then linux could not work well in the case of integrated memory controllers even for amd64,is it right? and for the paravirt xen-guest-linux do not support numa-aware now ,or does it support numa-aware if CONFIG_NUMA choiced? Thanks in advance > daniel > >