From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF1E8C43441 for ; Mon, 12 Nov 2018 15:44:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 76C7422504 for ; Mon, 12 Nov 2018 15:44:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dVlpnkTd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76C7422504 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729653AbeKMBiI (ORCPT ); Mon, 12 Nov 2018 20:38:08 -0500 Received: from mail-pl1-f193.google.com ([209.85.214.193]:45785 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729356AbeKMBiH (ORCPT ); Mon, 12 Nov 2018 20:38:07 -0500 Received: by mail-pl1-f193.google.com with SMTP id r3-v6so3790551pls.12; Mon, 12 Nov 2018 07:44:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=KWj7ZzFJX6mi6HS0+SSOYC44j85K4Wyg5t+RgwkzpHo=; b=dVlpnkTdZNdtWC8raWla3CoJa46uef+ge2Dc9ozhndluW9IWohM1g0czGUijJro8cp zr4sjRtc2DqOeHoyurcsCQ1UU7q4JZjZA8ZDl0jO2LhZSQJZrtBKtpbThbHOVlYOWkM2 PJ3sCZUCP4UV/gLeAEEeY3QlpslGdj72+Ycs6Cs1/A3hoGjuwRUsCRg0NKBWzWrhHNuq XdVKvoh+mYpsyUuWAs1bzs+rx3iDRoRtOKJ7QsAnjKPUqZGVW3UM64AN8eW/XXo5dP3o KLIbXK8LiWxZvIo1pT4rhTDPzN/yC1xDAivAisp3l4cDBHtvfBQvJduwKoY6JacwtYSo pDOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=KWj7ZzFJX6mi6HS0+SSOYC44j85K4Wyg5t+RgwkzpHo=; b=SyWDsGdV0qgeZqhPbjeobDEEMdwH/jBhU2OGmQiC3wiETcYH+ebglEGw/NWxzhiU6o JWsaNGDUeEHAvF1jnI/XqmFlWwCHm7jozJN4daNOEIBK2UGb25L9uYi4zHM8ZARpbR8P 92UQYFXYvpXEkSqJgm5ifs+13TqvHj318PxSDvqJbi8xSkYnY1voREoHAVpEUkBNZAPD 5IbtGIuZhUT5byA4/nI7hzrMDhtKvIWsH4s7xDov+asUrLoNfXrv4GCdVjjQ35H56Kgu idfxHeNzPZac7RgGXRoUkUjjFHCEjtMbLQQRTTZbB10nEd9eouW4Tz5ER3RGyYvxGFO/ UDSg== X-Gm-Message-State: AGRZ1gK8LVwKMkh0DYdmbMSVK97iIYsPsN1ITqFBG3imFUr/1I9DkXKh Xdt2SLtfbo0jRyIiEphqIr4= X-Google-Smtp-Source: AJdET5dE0Kde/52fdw5Klwh86HEjpx8kY5WWAiMXu4+jWk7VyIX767pvwXDVnjAK/viKG3zMBG5/Ag== X-Received: by 2002:a17:902:7281:: with SMTP id d1-v6mr1407093pll.284.1542037460816; Mon, 12 Nov 2018 07:44:20 -0800 (PST) Received: from [192.168.86.235] (c-67-180-167-114.hsd1.ca.comcast.net. [67.180.167.114]) by smtp.gmail.com with ESMTPSA id z79-v6sm26397488pfl.33.2018.11.12.07.44.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Nov 2018 07:44:19 -0800 (PST) Subject: Re: [PATCH 1/2] mm/page_alloc: free order-0 pages through PCP in page_frag_free() To: Alexander Duyck , =?UTF-8?Q?Pawe=c5=82_Staszewski?= Cc: aaron.lu@intel.com, linux-mm , LKML , Netdev , Andrew Morton , Jesper Dangaard Brouer , Eric Dumazet , Tariq Toukan , ilias.apalodimas@linaro.org, yoel@kviknet.dk, Mel Gorman , Saeed Mahameed , Michal Hocko , Vlastimil Babka , dave.hansen@linux.intel.com References: <20181105085820.6341-1-aaron.lu@intel.com> From: Eric Dumazet Message-ID: <6edcec1a-eefa-7861-1af4-cdf7fa45184c@gmail.com> Date: Mon, 12 Nov 2018 07:44:18 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/12/2018 07:30 AM, Alexander Duyck wrote: > It sounds to me like XDP would probably be your best bet. With that > you could probably get away with smaller ring sizes, higher interrupt > rates, and get the advantage of it batching the Tx without having to > drop packets. Add to this that with XDP (or anything lowering per packet processing costs) you can reduce number of cpus/queues, get better latencies, and bigger TX batches.