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=0.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 A0701C2D0DB for ; Fri, 31 Jan 2020 14:46:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 682CB214D8 for ; Fri, 31 Jan 2020 14:46:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PvAw/Sla" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728980AbgAaOqF (ORCPT ); Fri, 31 Jan 2020 09:46:05 -0500 Received: from mail-yw1-f50.google.com ([209.85.161.50]:43767 "EHLO mail-yw1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728825AbgAaOqF (ORCPT ); Fri, 31 Jan 2020 09:46:05 -0500 Received: by mail-yw1-f50.google.com with SMTP id f204so3858391ywc.10 for ; Fri, 31 Jan 2020 06:46:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=XMKbcmoSnQAXlW2AyN0LyNlTk+lpyFHLJPBhiXon0Rs=; b=PvAw/SlaIQRI6vx+Ay9buECYRrAYUEOJPXpNb6gdYSE5t9tvbbQVNxbfOK/ipAiPwC Z2dF9wWxlz67dexQ6SRizgaR3tJ654Gsq142zhUPw+CFoJPx8GaPRjWr0XjufXlfdI3b O9Y5PVGf2jusPJ1jvlgL2ke93ArH5ZiyIByc02mnWseu+1GaRWh/KrieMxmXGduqaEyC me0xcexjysVATi9OuUo56H+VLmNBMqHMritjWYh6Ly6A3MboCOiw3oPqvExXeZDoXKYO ucoJGaPSbho1QdsvSlWLVLn3wfKPDKZosaQPSVzZNhsBlNdZ4iHiCBw2ist3Igj+siaE gYSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=XMKbcmoSnQAXlW2AyN0LyNlTk+lpyFHLJPBhiXon0Rs=; b=Kkxn5pSqRZwT4N2p2KMvec9F0SFgA1PW6VAzVd23tCzJylZ8Lqp9/cwVLIW7MjUs6T pZeky7jjMqoq5KjsZWoD87G+SOBhyhkKKGsF6FBtAo/S5uW6Y0gr7yPooYwtwanYT26s d2oXjuM9rI3O4eHwoa2b3ZB9DLyN30kKQWk8LelFwx15EjHTbO5PMh2GNVxIwpMlJB/q jHV+lbBK8zDaKEXJzUADPxOkGqmWTRVEmJFnsbi/+0nmD55j6cOxwe041ew1Noh+Kf0U okB5qesKQlP9h/YKsXOCHVvZciuItg2E+Bgh2kNo+iexBcuo11kJ9+/Dh9v9zygRvj81 a8FQ== X-Gm-Message-State: APjAAAVSZldIWjoqy6BL8qy4JvfU12HGu7gnjz4Haakizg2osrT0xKLl ifrTGo/5I2vcKVjZRaHsXVbBCMYOu4PWOPx31FY= X-Google-Smtp-Source: APXvYqyx9WKpSOKrVVRkMqgV4GjlexH5e8D7tCzt/jUaGa3uqsDLuWiYxPno6xmWLmr6qYdFJUeXGMeeIQ9Aul4PFUM= X-Received: by 2002:a25:6144:: with SMTP id v65mr8552085ybb.61.1580481964284; Fri, 31 Jan 2020 06:46:04 -0800 (PST) MIME-Version: 1.0 References: <20200130085629.42c71fdf@cakuba> In-Reply-To: <20200130085629.42c71fdf@cakuba> From: Martin T Date: Fri, 31 Jan 2020 16:45:50 +0200 Message-ID: Subject: Re: Why is NIC driver queue depth driver dependent when it allocates system memory? To: Jakub Kicinski Cc: netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi Jakub, > the idea is that drivers can choose the initial setting which are > optimal for the implementation and the hardware. Whether they actually > are, or whether values chosen 10 years ago for tg3 and e1000e are > reasonable for modern uses of that hardware could perhaps be questioned. Ok, thanks! Martin