Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753069AbcLHLHA (ORCPT ); Thu, 8 Dec 2016 06:07:00 -0500 Received: from outbound-smtp04.blacknight.com ([81.17.249.35]:57188 "EHLO outbound-smtp04.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751139AbcLHLG7 (ORCPT ); Thu, 8 Dec 2016 06:06:59 -0500 Date: Thu, 8 Dec 2016 11:06:56 +0000 From: Mel Gorman To: Jesper Dangaard Brouer Cc: Eric Dumazet , Andrew Morton , Christoph Lameter , Michal Hocko , Vlastimil Babka , Johannes Weiner , Joonsoo Kim , Linux-MM , Linux-Kernel Subject: Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v7 Message-ID: <20161208110656.bnkvqg73qnjkehbc@techsingularity.net> References: <20161207101228.8128-1-mgorman@techsingularity.net> <1481137249.4930.59.camel@edumazet-glaptop3.roam.corp.google.com> <20161207194801.krhonj7yggbedpba@techsingularity.net> <1481141424.4930.71.camel@edumazet-glaptop3.roam.corp.google.com> <20161207211958.s3ymjva54wgakpkm@techsingularity.net> <20161207232531.fxqdgrweilej5gs6@techsingularity.net> <20161208092231.55c7eacf@redhat.com> <20161208091806.gzcxlerxprcjvt3l@techsingularity.net> <20161208114308.1c6a424f@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20161208114308.1c6a424f@redhat.com> User-Agent: Mutt/1.6.2 (2016-07-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 887 Lines: 20 On Thu, Dec 08, 2016 at 11:43:08AM +0100, Jesper Dangaard Brouer wrote: > > That's expected. In the initial sniff-test, I saw negligible packet loss. > > I'm waiting to see what the full set of network tests look like before > > doing any further adjustments. > > For netperf I will not recommend adjusting the global default > /proc/sys/net/core/rmem_default as netperf have means of adjusting this > value from the application (which were the options you setup too low > and just removed). I think you should keep this as the default for now > (unless Eric says something else), as this should cover most users. > Ok, the current state is that buffer sizes are only set for netperf UDP_STREAM and only when running over a real network. The values selected were specific to the network I had available so milage may vary. localhost is left at the defaults. -- Mel Gorman SUSE Labs