Path: news.cambrium.nl!textnews.cambrium.nl!feeder2.cambriumusenet.nl!feed.tweaknews.nl!195.62.100.242.MISMATCH!newsfeed.kamp.net!newsfeed.kamp.net!87.79.20.101.MISMATCH!newsreader4.netcologne.de!news.netcologne.de!novso.com!news.skynet.be!195.238.0.222.MISMATCH!newsspl501.isp.belgacom.be!tjb!not-for-mail Date: Sun, 09 Sep 2012 18:40:58 +0200 From: "Gerard H. Pille" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120715 Firefox/14.0.1 SeaMonkey/2.11 MIME-Version: 1.0 Newsgroups: comp.databases.oracle.server Subject: Re: linux memory settings on OL 6.2 ( red hat compatible ) References: <47a4020c-f8e8-4720-b432-62f1a6b72db3@z4g2000vby.googlegroups.com> In-Reply-To: <47a4020c-f8e8-4720-b432-62f1a6b72db3@z4g2000vby.googlegroups.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Lines: 20 Message-ID: <504cc69a$0$3112$ba620e4c@news.skynet.be> Organization: -= Belgacom Usenet Service =- NNTP-Posting-Host: 7d24f5ac.news.skynet.be X-Trace: 1347208858 news.skynet.be 3112 81.242.182.57:19447 X-Complaints-To: usenet-abuse@skynet.be Xref: news.cambrium.nl John Hurley wrote: > Our new servers are going thru initial testing now ... moving to 11.2 > database and ( at least currently ) OL 6.2 red hat compatible kernel. > Was going to try UEK or UEK2 but ... powerpath driver compatibility. > Kills me that EMC is not keeping stuff up to date with oracles > preferred kernels ... but c'est la vie. > > Each of these machines has 96 gb of RAM. > > We just finished discovering some issues/bugs with the default setting > of anonymous huge pages and set now to never these two: > echo never > /sys/kernel/mm/redhat_transparent_hugepage/enabled > echo never > /sys/kernel/mm/redhat_transparent_hugepage/defrag John, what kind of issues did you have? Thanks, Gerard