From owner-freebsd-questions@FreeBSD.ORG Mon Oct 15 02:06:37 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 3A89868D for ; Mon, 15 Oct 2012 02:06:37 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id E67668FC18 for ; Mon, 15 Oct 2012 02:06:36 +0000 (UTC) Received: by mail-ob0-f182.google.com with SMTP id wc20so5947183obb.13 for ; Sun, 14 Oct 2012 19:06:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=bnUfBqHJ9s83VqZqdqEaQ4kmQcm5p8fLOMXzNXiZyLo=; b=EXFgdmrVS1aUFIncaoFJGgNbYH/TfxdXiDNvqBt8S15oww3RlL4oy/Usk/DFIP4IA8 QpL2DDM5154VVXK1MDBKsXtkf54/kdHQyBM7uzBz+rqyDo5KA8uo5p+YG6Uj3sKs6LHq jTjD5EiwThvSVnoebZtQBWUiKcrZ541Ji73wJMjKbArquo+xCaVkp7zhYX5mWFvcrcnU Fu60FtQN4Bxff66cD9iYYrVHLbcEIBNQcRC3ue0tJ3wMRbS3pZdYFCRferzF3gFcT4XS bsRff2xGUNB2Ska8nwPyPVlH7xgrzj/sDUJSaMtOAJFG6NHXl+9R4gSD8WG9YcgFMH1W waTw== MIME-Version: 1.0 Received: by 10.182.124.99 with SMTP id mh3mr8324847obb.91.1350266796047; Sun, 14 Oct 2012 19:06:36 -0700 (PDT) Received: by 10.76.80.104 with HTTP; Sun, 14 Oct 2012 19:06:35 -0700 (PDT) In-Reply-To: <20121014223328.16140uoyo4x5dii0@webmail.ime.usp.br> References: <20121012095915.470864k9735iy883@webmail.ime.usp.br> <20121013101545.GA21274@external.screwed.box> <20121013120939.18067gfy2u4vdzjn@webmail.ime.usp.br> <20121014140148.GA5344@external.screwed.box> <20121014223328.16140uoyo4x5dii0@webmail.ime.usp.br> Date: Sun, 14 Oct 2012 21:06:35 -0500 Message-ID: Subject: Re: Sysctls and privacy From: Adam Vande More To: schultz@ime.usp.br Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: Peter Vereshagin , freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Oct 2012 02:06:37 -0000 On Sun, Oct 14, 2012 at 8:33 PM, wrote: > >> Here is the catch. I know I can read-only mount most static filesystems > from a template. However, the mutable ones have to be copied. > Says who? Is this your requirement? Why? > Because someone might know the program memory, cpu or network usage > patterns > and extrapolate from the data. Firefox is a good example because it > eats up huge amounts of RAM and garbage collects it quite fast. So when > that pattern shows up you know someone is probably using Firefox. > This, of course, also applies to other programs. > If this is really a serious concern of yours, you have much bigger fish to fry than sysctl(8). -- Adam Vande More