From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from qmta11.emeryville.ca.mail.comcast.net (qmta11.emeryville.ca.mail.comcast.net [IPv6:2001:558:fe2d:44:76:96:27:211]) by ozlabs.org (Postfix) with ESMTP id 21EA81400C1 for ; Wed, 26 Mar 2014 04:02:06 +1100 (EST) Date: Tue, 25 Mar 2014 11:53:48 -0500 (CDT) From: Christoph Lameter To: Nishanth Aravamudan Subject: Re: Bug in reclaim logic with exhausted nodes? In-Reply-To: <20140325162303.GA29977@linux.vnet.ibm.com> Message-ID: References: <20140311210614.GB946@linux.vnet.ibm.com> <20140313170127.GE22247@linux.vnet.ibm.com> <20140324230550.GB18778@linux.vnet.ibm.com> <20140325162303.GA29977@linux.vnet.ibm.com> Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: linux-mm@kvack.org, mgorman@suse.de, linuxppc-dev@lists.ozlabs.org, anton@samba.org, rientjes@google.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 25 Mar 2014, Nishanth Aravamudan wrote: > On 25.03.2014 [11:17:57 -0500], Christoph Lameter wrote: > > On Mon, 24 Mar 2014, Nishanth Aravamudan wrote: > > > > > Anyone have any ideas here? > > > > Dont do that? Check on boot to not allow exhausting a node with huge > > pages? > > Gigantic hugepages are allocated by the hypervisor (not the Linux VM), Ok so the kernel starts booting up and then suddenly the hypervisor takes the 2 16G pages before even the slab allocator is working? Not sure if I understand that correctly.