From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <436B1150.2010001@cosmosbay.com> Date: Fri, 04 Nov 2005 08:44:16 +0100 From: Eric Dumazet MIME-Version: 1.0 Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 References: <20051104010021.4180A184531@thermo.lanl.gov> <20051103221037.33ae0f53.pj@sgi.com> In-Reply-To: <20051103221037.33ae0f53.pj@sgi.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Return-Path: To: Paul Jackson Cc: Linus Torvalds , andy@thermo.lanl.gov, mbligh@mbligh.org, akpm@osdl.org, arjan@infradead.org, arjanv@infradead.org, haveblue@us.ibm.com, kravetz@us.ibm.com, lhms-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mel@csn.ul.ie, mingo@elte.hu, nickpiggin@yahoo.com.au List-ID: Paul Jackson a ecrit : > Linus wrote: > >>Maybe you'd be willing on compromising by using a few kernel boot-time >>command line options for your not-very-common load. > > > If we were only a few options away from running Andy's varying load > mix with something close to ideal performance, we'd be in fat city, > and Andy would never have been driven to write that rant. I found hugetlb support in linux not very practical/usable on NUMA machines, boot-time parameters or /proc/sys/vm/nr_hugepages. With this single integer parameter, you cannot allocate 1000 4MB pages on one specific node, letting small pages on another node. I'm not an astrophysician, nor a DB admin, I'm only trying to partition a dual node machine between one (numa aware) memory intensive job and all others (system, network, shells). At least I can reboot it if needed, but I feel Andy pain. There is a /proc/buddyinfo file, maybe we need a /proc/sys/vm/node_hugepages with a list of integers (one per node) ? Eric -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org