Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp4619825imm; Tue, 9 Oct 2018 02:30:19 -0700 (PDT) X-Google-Smtp-Source: ACcGV60BPTqAhq/D7wWwv0yf4281UOCie+8zgkKugfPDIcJommEJUOA1BMXwLc/4C1XWxBiwGFEy X-Received: by 2002:a63:184a:: with SMTP id 10-v6mr24359669pgy.81.1539077419519; Tue, 09 Oct 2018 02:30:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539077419; cv=none; d=google.com; s=arc-20160816; b=uc2k0HjTSHyd2QAk6mRFdva7IiEPa98QO9fI0UrYiKtcRlVoGHIx7PZBER1SGSf9/P 8UiSQsmu9U8Q30Jj/49JWvlTz1x7kyIw5z0ArUv/YKURM7C7gxbR5giXZ6lNjPdyiLeq xWst7guk088dpx+T70h59S/CM6Ic26cTr/7vglelfts9+awNZ54qzCN7/SMqqrSvwwKe 2YgE5z1cK0L+y6bjWLjcnOrD/vpqO7B3SrwDqKc+cyCHzCbDDwpdOIzPXXn9DOHxPwzo mVqd8zyVSwh/fLtz1g8lRfTV+Eks+vsC5fpKWQ1Uo7mec7pZIfxA8TTylFnxjr8Isgnl 39Mw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=vvkgF0SPgkQ3UpwLmwzZY6wufmNcGkwdMbv3pr5B1SA=; b=ogh3/amPl/kv02hBfN3ZMgU8/mSuIeW15P5TyymmQwo+kTOiYmcISuZuNXFXL7sDmV JcB2DffX901G6fyU6NFWMLI1lE0uDw9K+nMF+GnQ6s7FD5rdRV+ppEduQD4CkUM+b6CT IhlradhBns9CRo+9m9etNNjwfVx4SXVM7oA9A6HJrhG9wp9I4q3k6T2a4+MZrJtNu9Pv xfKD5gva4cMvC5gdeh3t9tU4sSSb45GH9LKY6fCEkTwmQEWpRPz5D0x8emtkGi5iUo// bRIGCun/3q2Xvg2/3SVnIGV809luV0kfFdWVMPgGyyWJVSoLbepG4LqI/QuPG7YveTbW dppA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b6-v6si21231748pls.349.2018.10.09.02.30.04; Tue, 09 Oct 2018 02:30:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726668AbeJIQpn (ORCPT + 99 others); Tue, 9 Oct 2018 12:45:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:53278 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725927AbeJIQpn (ORCPT ); Tue, 9 Oct 2018 12:45:43 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 6E2BCAF02; Tue, 9 Oct 2018 09:29:41 +0000 (UTC) Date: Tue, 9 Oct 2018 11:29:38 +0200 From: Michal Hocko To: Arun KS Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, boris.ostrovsky@oracle.com, jgross@suse.com, akpm@linux-foundation.org, dan.j.williams@intel.com, vbabka@suse.cz, iamjoonsoo.kim@lge.com, gregkh@linuxfoundation.org, osalvador@suse.de, malat@debian.org, kirill.shutemov@linux.intel.com, jrdr.linux@gmail.com, yasu.isimatu@gmail.com, mgorman@techsingularity.net, aaron.lu@intel.com, devel@linuxdriverproject.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, xen-devel@lists.xenproject.org, vatsa@codeaurora.org, vinmenon@codeaurora.org, getarunks@gmail.com Subject: Re: [PATCH v5 1/2] memory_hotplug: Free pages as higher order Message-ID: <20181009092938.GH8528@dhcp22.suse.cz> References: <1538727006-5727-1-git-send-email-arunks@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1538727006-5727-1-git-send-email-arunks@codeaurora.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 05-10-18 13:40:05, Arun KS wrote: > When free pages are done with higher order, time spend on > coalescing pages by buddy allocator can be reduced. With > section size of 256MB, hot add latency of a single section > shows improvement from 50-60 ms to less than 1 ms, hence > improving the hot add latency by 60%. Modify external > providers of online callback to align with the change. Acked-by: Michal Hocko Thanks for your patience with all the resubmission. -- Michal Hocko SUSE Labs