From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Nelson Subject: Re: Memstore performance improvements v0.90 vs v0.87 Date: Fri, 20 Feb 2015 10:12:46 -0600 Message-ID: <54E75CFE.70601@redhat.com> References: <3649A15A2562B54294DE14BCE5AC79120AB30A5D@FMSMSX106.amr.corp.intel.com> <3649A15A2562B54294DE14BCE5AC79120AB30EEA@FMSMSX106.amr.corp.intel.com> <54B6F103.9000708@redhat.com> <3649A15A2562B54294DE14BCE5AC79120AB31012@FMSMSX106.amr.corp.intel.com> <54C7FD1C.40406@redhat.com> <54E6F96B.9080202@ubuntu.com> <54E754DA.6060703@redhat.com> <252858605.1545602.1424448205171.JavaMail.zimbra@oxygem.tv> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([209.132.183.28]:50627 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932066AbbBTQNB (ORCPT ); Fri, 20 Feb 2015 11:13:01 -0500 In-Reply-To: <252858605.1545602.1424448205171.JavaMail.zimbra@oxygem.tv> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Alexandre DERUMIER Cc: Blair Bethwaite , James Page , ceph-devel , Stephen L Blinick , Jay Vosburgh , Colin Ian King , Patricia Gaughen , Leann Ogasawara On 02/20/2015 10:03 AM, Alexandre DERUMIER wrote: >>> http://rhelblog.redhat.com/2015/01/12/mysteries-of-numa-memory-management-revealed/ >>> It's possible that this could be having an effect on the results. > > Isn't auto numa balancing enabled by default since kernel 3.8 ? No idea, I'm behind the times on what's been going on with numa tuning. > > it can be checked with > > cat /proc/sys/kernel/numa_balancing At least at first glance it doesn't look like it's enabled on either our RHEL7 or Ubuntu nodes. No numad running either.