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=-2.0 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 8BE5EC433DF for ; Wed, 27 May 2020 22:22:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5B47920707 for ; Wed, 27 May 2020 22:22:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ezWySyhW"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="s2T8fMW9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B47920707 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-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=49VRoxtdydutzreWLplqGt50MKoI11qk8C3LnaqsRIQ=; b=ezWySyhWbK1pYd 2jFncTyFSjKFaQCDsBgop7yDDa7MMJAoRUdt1TAx7oo4kLAswZregnCWNcJ3bmjYElMiTWOSaRC3R zb8G1Rskzj08s7dzkYncMRmvnTKlJaOw3Rk+zUrltfLZpwfrUE9Iy4bSwRNMdhRZ53cTxEYOuhTMa McKFKMGtP8GUWMnIKA29RZM6+Jy6UlhyH7LxFmEnj/bLhxG5enpECfk9a0T6wKX2U1kdPZ0P/hQpo lOv3qEd4clPd980PfUUlKAgqJ5AhAmLlVAt/yovjKlgTKOS0qkq5d0XJcHqR+Nxs2SQ7ZbEnWKKQy 5jOVbjCY46fnZrNZPVmQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1je4R0-00022u-KD; Wed, 27 May 2020 22:22:02 +0000 Received: from mail-qt1-x842.google.com ([2607:f8b0:4864:20::842]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1je4Qy-00022S-Bx for linux-arm-kernel@lists.infradead.org; Wed, 27 May 2020 22:22:01 +0000 Received: by mail-qt1-x842.google.com with SMTP id i68so20689534qtb.5 for ; Wed, 27 May 2020 15:21:59 -0700 (PDT) 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=O0EZFokD4VETW8hilHGvqiWo+AY18MjoTOCmb0j2QP0=; b=s2T8fMW9uZpIMjWGcD1ZLd6JVhc9lKb0qUFORy1p1/+usP51vVfE7imxKLhJ4zBXJL X0mKKqb2aJCwjf5JmHRE1iXQ5HDbob9tUqqLNARkQ4SclF98OdsiSN0H9L7Jk7a0uncw hkkYgpvz1WcPKKAIE5+ZaRlyLjX6J5dcqyx6Jy/iaBSWUW4u7GmrcX5FGeEQ7HFP7/to Y3/evqAvP8745WekeffD2AUo5xLwINjsmVd9GSXBQoU8+b3mUNz7Y2lZUf15r70X16G7 pzzvqB9L/QSRoPPhm2dplOLBsn3NmgGCi0h/ITu1v08iISeTVI8BH0uIZYxV4HlMnPo9 yrWQ== 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=O0EZFokD4VETW8hilHGvqiWo+AY18MjoTOCmb0j2QP0=; b=E6tRCFQg5WppPFWqs6zI37oGBY2BQzRXhpomjyNgyxIrrH1ZWHJgJGI6n8+ICbN4yG wFJ8m8hrKdXTcuRnYTMRwrdQGB7k0M/Z5OakBmntK4w4UiEBRLAl/BzkcwqaRV9BQT9B st7Vo8zrmwialdtaH3MtcFhZKGq0wb6+ToGhnY6mdxsaLqfO19k8wxDvXqHslKYmlnRw dEHkugggxgH2/qaKjS1VGPOotNR5jo+MO/pBNF/H+8MO4v9U09hpCFOxJLqdNb8mrKMj vrAl51bkGcBpinMwtR9SrERtTvivpqr3BcbxKDEQ6cZXqYp7fhWOuVZW+8oxrK0E47Lh hasg== X-Gm-Message-State: AOAM531706T/MoAgww7QX2LIZgxiJEkKO7Nne296Yzwxb1s7QJSFGnIn suQGPs0sBssoZhgx1soQoJs= X-Google-Smtp-Source: ABdhPJyOgdLDKEz0HQkCQmvOCQBIMuQEJnT24eYzL6cb96knhDKVZ2UOmt/SMnmijP1sKg5MpJ9iCQ== X-Received: by 2002:ac8:6cf:: with SMTP id j15mr107653qth.143.1590618118847; Wed, 27 May 2020 15:21:58 -0700 (PDT) Received: from ?IPv6:2601:282:803:7700:2840:9137:669d:d1e7? ([2601:282:803:7700:2840:9137:669d:d1e7]) by smtp.googlemail.com with ESMTPSA id v14sm3909630qtj.31.2020.05.27.15.21.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 May 2020 15:21:58 -0700 (PDT) Subject: Re: [PATCH v3 0/7] Statsfs: a new ram-based file system for Linux kernel statistics To: Paolo Bonzini , Jakub Kicinski , Emanuele Giuseppe Esposito References: <20200526110318.69006-1-eesposit@redhat.com> <20200526153128.448bfb43@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> <6a754b40-b148-867d-071d-8f31c5c0d172@redhat.com> <20200527132321.54bcdf04@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> From: David Ahern Message-ID: Date: Wed, 27 May 2020 16:21:55 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200527_152200_407645_1FA5A80E X-CRM114-Status: GOOD ( 12.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, netdev@vger.kernel.org, Emanuele Giuseppe Esposito , linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org, Jonathan Adams , Christian Borntraeger , Andrew Lunn , Alexander Viro , David Rientjes , linux-fsdevel@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, Jim Mattson Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 5/27/20 3:07 PM, Paolo Bonzini wrote: > I see what you meant now. statsfs can also be used to enumerate objects > if one is so inclined (with the prototype in patch 7, for example, each > network interface becomes a directory). there are many use cases that have 100's to 1000's have network devices. Having a sysfs entry per device already bloats memory usage for these use cases; another filesystem with an entry per device makes that worse. Really the wrong direction for large scale systems. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel