From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx117.postini.com [74.125.245.117]) by kanga.kvack.org (Postfix) with SMTP id 00F6F6B0032 for ; Tue, 17 Sep 2013 12:47:42 -0400 (EDT) From: "Luck, Tony" Subject: RE: [RESEND PATCH v2 1/4] mm/hwpoison: fix traverse hugetlbfs page to avoid printk flood Date: Tue, 17 Sep 2013 16:47:39 +0000 Message-ID: <3908561D78D1C84285E8C5FCA982C28F31CFEAC9@ORSMSX106.amr.corp.intel.com> References: <1379202839-23939-1-git-send-email-liwanp@linux.vnet.ibm.com> <20130915001352.GQ18242@two.firstfloor.org> <3908561D78D1C84285E8C5FCA982C28F31CFD2D6@ORSMSX106.amr.corp.intel.com> <1379369397-ld8lbcn-mutt-n-horiguchi@ah.jp.nec.com> <20130916232345.GA3241@hacker.(null)> <3908561D78D1C84285E8C5FCA982C28F31CFD50B@ORSMSX106.amr.corp.intel.com> <20130917000817.GA5996@hacker.(null)> In-Reply-To: <20130917000817.GA5996@hacker.(null)> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Wanpeng Li Cc: Naoya Horiguchi , Andi Kleen , Andrew Morton , "Wu, Fengguang" , "gong.chen@linux.intel.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" > Transparent huge pages are not helpful for DB workload which there is a l= ot of=20 > shared memory Hmm. Perhaps they should be. If a database allocates most[1] of the memory= on a machine to a shared memory segment - that *ought* to be a candidate for usi= ng transparent huge pages. Now that we have them they seem a better choice (m= uch more flexibility) than hugetlbfs. -Tony [1] I've been told that it is normal to configure over 95% of physical memo= ry to the shared memory region to run a particular transaction based benchmark with o= ne commercial data base application. -- 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