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 7BD0BC19F28 for ; Wed, 3 Aug 2022 16:44:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235039AbiHCQo5 (ORCPT ); Wed, 3 Aug 2022 12:44:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229548AbiHCQo5 (ORCPT ); Wed, 3 Aug 2022 12:44:57 -0400 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4718C402E5 for ; Wed, 3 Aug 2022 09:44:56 -0700 (PDT) Received: by mail-ej1-x633.google.com with SMTP id c24so1711270ejd.11 for ; Wed, 03 Aug 2022 09:44:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=oiZPPs5MYI4/+W8yBMwCWKj6VS0spM9Blj9rVuT6y0o=; b=RSE84gDSPn39xr+1byZPyrJwh4O8nimo8zEb56V2vpcURL8cR/iKnRrj5KqE46OWG3 0JgOT/61TRpBg4ovhC5wHfMEinnsqdEek0C6UqOArCWCF25O7lTJ9XofEXMVX/6sU++H JkOrPY9idXwhzAvQUNzMTWyybEgQodqSjd7/A= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=oiZPPs5MYI4/+W8yBMwCWKj6VS0spM9Blj9rVuT6y0o=; b=xkUULYOqpgb5WFgrVh1cLR938FXJBMhG4aG3v4MtEUnxiUFbiFaSa+iZS9NPN3siot eVM5YhCsmNYZE4/rHgYqIXAWQnF1oHZPtyUMc7oFCVMVyiB6vpN5bIHS/tZ2YdSTa5DI y05m9QAqdHebrfS1iXWTpEmi65/iCZoN7BPJpvC+xOttqAccyEPE3KPOyylIxKoQ1pK1 FoMtDdeuZsJ+1I6G2tJisoIV0P0PUi9ANZyW6poQne+J6i8Vx2Vj1ZauwOnVaTPC6dld kbA7PdiNKMTnY1dq8gd9UqajZQoB1NHDsLNDw48lbcmxNnifLin0/3oI98xTwAI+79FE F9nw== X-Gm-Message-State: AJIora9S8vB3qvAikbNd0VN326odvScL62OYpz8q2jDgyw8Izk5SB8DO axmhUua++SCk9ZUkH+tluxb2YMcDSrefesM6 X-Google-Smtp-Source: AGRyM1t/qliNIrlR1jdrfNp1FB7x7o9kH5pxuD8hAnqau2UruPvbl2oHu5RsAE7pLYh7WXXI1YUYTA== X-Received: by 2002:a17:907:9612:b0:72e:56bd:2b9a with SMTP id gb18-20020a170907961200b0072e56bd2b9amr20733114ejc.526.1659545094559; Wed, 03 Aug 2022 09:44:54 -0700 (PDT) Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com. [209.85.221.42]) by smtp.gmail.com with ESMTPSA id r9-20020a17090609c900b00722bc0aa9e3sm7414012eje.162.2022.08.03.09.44.53 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 03 Aug 2022 09:44:54 -0700 (PDT) Received: by mail-wr1-f42.google.com with SMTP id l4so22250113wrm.13 for ; Wed, 03 Aug 2022 09:44:53 -0700 (PDT) X-Received: by 2002:a05:6000:1a88:b0:21d:aa97:cb16 with SMTP id f8-20020a0560001a8800b0021daa97cb16mr16942311wry.97.1659545093700; Wed, 03 Aug 2022 09:44:53 -0700 (PDT) MIME-Version: 1.0 References: <1bbb9374-c503-37c6-45d8-476a8b761d4a@kernel.dk> In-Reply-To: <1bbb9374-c503-37c6-45d8-476a8b761d4a@kernel.dk> From: Linus Torvalds Date: Wed, 3 Aug 2022 09:44:37 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [GIT PULL] io_uring support for zerocopy send To: Jens Axboe Cc: Pavel Begunkov , io-uring , netdev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org 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?" It would have been good to have had a link in the pull request (and thus in the merge message). Linus