From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f70.google.com (mail-wm0-f70.google.com [74.125.82.70]) by kanga.kvack.org (Postfix) with ESMTP id 956666B0038 for ; Mon, 28 Nov 2016 13:48:00 -0500 (EST) Received: by mail-wm0-f70.google.com with SMTP id i131so39202893wmf.3 for ; Mon, 28 Nov 2016 10:48:00 -0800 (PST) Received: from outbound-smtp06.blacknight.com (outbound-smtp06.blacknight.com. [81.17.249.39]) by mx.google.com with ESMTPS id r190si27117512wmr.61.2016.11.28.10.47.59 for (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 28 Nov 2016 10:47:59 -0800 (PST) Received: from mail.blacknight.com (pemlinmail03.blacknight.ie [81.17.254.16]) by outbound-smtp06.blacknight.com (Postfix) with ESMTPS id B6F8D990CC for ; Mon, 28 Nov 2016 18:47:58 +0000 (UTC) Date: Mon, 28 Nov 2016 18:47:58 +0000 From: Mel Gorman Subject: Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v3 Message-ID: <20161128184758.bcz5ar5svv7whnqi@techsingularity.net> References: <20161127131954.10026-1-mgorman@techsingularity.net> <20161128162126.ulbqrslpahg4wdk3@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: Andrew Morton , Michal Hocko , Vlastimil Babka , Johannes Weiner , Linux-MM , Linux-Kernel On Mon, Nov 28, 2016 at 10:38:58AM -0600, Christoph Lameter wrote: > > > that only insiders know how to tune and an overall fragile solution. > > While I agree with all of this, it's also a problem independent of this > > patch. > > It is related. The fundamental issue with fragmentation remain and IMHO we > really need to tackle this. > Fragmentation is one issue. Allocation scalability is a separate issue. This patch is about scaling parallel allocations of small contiguous ranges. Even if there were fragmentation-related patches up for discussion, they would not be directly affected by this patch. If you have a series aimed at parts of the fragmentation problem or how subsystems can avoid tracking 4K pages in some important cases then by all means post them. -- Mel Gorman SUSE Labs -- 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