From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chia-Hung Lin Subject: Re: a question about the numa information on my machine Date: Thu, 23 Jun 2011 17:35:26 +0800 Message-ID: References: <20110622151702.GC3263@one.firstfloor.org> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=p5i81JeBqEo+YUy0rCzP/OW6FcvQNeuLtfJkOkfvzpM=; b=WJD0Pd8bPNz7VJxOqlTzuoQdiPQW/XM05VHvjcDhjyVAqyy9XuzEHdaixvcngK2+W/ Rw89jR5mpoPuVXxPYZkGDFCMSkJRbxri++tD/FsNqVKtIdT4YvjukHmAeJ8tJnwic3cU WZXYiuYk13YG4fOqVRQLrjxOiYHe4zKKI6mUQ= In-Reply-To: <20110622151702.GC3263@one.firstfloor.org> Sender: linux-numa-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="iso-8859-1" To: Andi Kleen Cc: linux-numa@vger.kernel.org On Wed, Jun 22, 2011 at 11:17 PM, Andi Kleen wrot= e: >> >> =A0 =A0Why there is only one node instead of two? Is there any thing= wrong >> with=A0my machine? > > You have to disable "Node interleaving" (or similarly named) in the B= IOS > to get NUMA support in the OS. > > -Andi > There is a "Memory Node Interleaving" section in BIOS and two options that I can choose : SMP or NUMA =3D> no disabled option Either one will get "No NUMA configuration found" in dmesg And I don't see any ACPI SRAT information during boot. the boot command is "swiotlb=3D65536 ro root=3DLABEL=3D/ quiet numa=3Da= cpi" Is it correct? (I have no right to change it to debug mode to see if anything wrong) David