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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94015C19F28 for ; Wed, 3 Aug 2022 16:47:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229516AbiHCQrm (ORCPT ); Wed, 3 Aug 2022 12:47:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236474AbiHCQrk (ORCPT ); Wed, 3 Aug 2022 12:47:40 -0400 Received: from mail-io1-xd32.google.com (mail-io1-xd32.google.com [IPv6:2607:f8b0:4864:20::d32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39E6D4F190 for ; Wed, 3 Aug 2022 09:47:38 -0700 (PDT) Received: by mail-io1-xd32.google.com with SMTP id l24so13294513ion.13 for ; Wed, 03 Aug 2022 09:47:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=YbVPSgk9dxNNi8gUS55ivBJ2apU2DlAKvQ9x+13Ao+A=; b=auax6tZzEVheQ23bG1cZ6XY/1WL0f5OaJ9eeAMosl28oXlaLweRLYDlvypxouhNQXG Wc2GtNUHRNkmOACjZIk1NDTTKhjkn5bgkpkGyo+8BUDWlGhZ+sbOmMeNH2to8Jzsd/bB R3fsB0dv7rk4pJ7Jd8vgO5ErHi6+yuZrqEsxYlKMn7YbSl0oSqN/MlAR4R16Ha9dWx2W zkGQzummxVUg8KxHhIFvF8V1Q/I+8+bbO0shzS5DmU2qqEW0Tuok5h96NIX5dhe3ZFD3 lh/ppeRjdBj4pbvv8up6UVwS5bLgTjQ14vmqb77Df9aopmOfmWztIHZiEckKDP0VOnYJ unwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=YbVPSgk9dxNNi8gUS55ivBJ2apU2DlAKvQ9x+13Ao+A=; b=R4ZHMjBUh4iJq/d2SSrwRuGPjPP1uN6lymdxh2IBQVA4O9D3Hqpg2ChnyO6izoz1iL 5bl8gk6WBbJOLs93mzRGhsXr47frhm/0+11FSDnm7ZT7HQhMYGafYOiDM0CyWgaurIpX dE/Jm8vj4AoYP8eyGV4nN/KvOXf6dFW40vEIOEPaEggQ2I93v7gCKOnovqLqI2d8+3Lf GgNesha7MIhNflLE0pOn2088nNJQ1fYMifMIp4VpymtPrLDlHtq3Rw6HuQNVkrKx7Ghc RNIM3HHlzSVpj5fvrTOAbGM7Z3sOzgXbKIoA2tWhZ3roQ+tYAkk6G69l6C8p0CvJmhAJ JFuw== X-Gm-Message-State: AJIora/TAvT4XCJzz/h8TI2o0MOZxiNBgpVCsx98hMmwlEgdrqsAGIB/ /fpv+ZxJPC48Jwa27VBwsOFeUKH/vEhBwQ== X-Google-Smtp-Source: AGRyM1vgn3W7ondu7uH/VaFozyf9V6PUcOp1NU1GwyIQEUbIOpiNEVxk/8Esk3Wq6VI0JJeUc7RbhA== X-Received: by 2002:a05:6602:27cc:b0:5f0:876e:126b with SMTP id l12-20020a05660227cc00b005f0876e126bmr9445973ios.129.1659545258157; Wed, 03 Aug 2022 09:47:38 -0700 (PDT) Received: from [192.168.1.172] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id d123-20020a026281000000b00335c432c4b9sm8033347jac.136.2022.08.03.09.47.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 03 Aug 2022 09:47:37 -0700 (PDT) Message-ID: Date: Wed, 3 Aug 2022 10:47:36 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [GIT PULL] io_uring support for zerocopy send Content-Language: en-US To: Linus Torvalds Cc: Pavel Begunkov , io-uring , netdev References: <1bbb9374-c503-37c6-45d8-476a8b761d4a@kernel.dk> From: Jens Axboe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 8/3/22 10:44 AM, Linus Torvalds wrote: > On Wed, Aug 3, 2022 at 9:39 AM Jens Axboe wrote: >> >> If you look at the numbers Pavel posted, it's >> definitely firmly in benchmark land, but I do think the goals of >> breaking even with non zero-copy for realistic payload sizes is the real >> differentiator here. > > Well, a big part of why I wrote the query email was exactly because I > haven't seen any numbers, and the pull request didn't have any links > to any. > > So you say "the numbers Pavel posted" and I say "where?" Didn't think of that since it's in the git commit link, but I now realize that it's like 3 series of things in there. > It would have been good to have had a link in the pull request (and > thus in the merge message). Agree, it should've been in there. Here's the one from the series that got merged: https://lore.kernel.org/all/cover.1657643355.git.asml.silence@gmail.com/ -- Jens Axboe