From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH]x86: Increase the default NR_CPUS to 128. Date: Wed, 10 Mar 2010 14:38:01 +0000 Message-ID: <4B97BCD90200007800033CD4@vpn.id2.novell.com> References: <4B97ACD30200007800033C1F@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser , Xiantao Zhang Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org >>> Keir Fraser 10.03.10 15:21 >>> >It would certainly be nice, but at least we can boot all CPUs and run VMs >across them, minus the finer-grained control. Is this halfway default >solution for these bigger machines worse than not making an effort at = all? Not sure - with NUMA also defaulting to on, guest creation may fail because of the failure to enforce the affinity. Not nice, especially since (I think; a general problem of the tools) the error indication is rather hard to interpret by someone not knowing the source code. >At the end of the day packagers can make up their own minds. Certainly. Jan