From owner-freebsd-questions@freebsd.org Wed Aug 17 21:52:55 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0D590BBDFB0 for ; Wed, 17 Aug 2016 21:52:55 +0000 (UTC) (envelope-from brandon.wandersee@gmail.com) Received: from mail-io0-f174.google.com (mail-io0-f174.google.com [209.85.223.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id D90791E92 for ; Wed, 17 Aug 2016 21:52:54 +0000 (UTC) (envelope-from brandon.wandersee@gmail.com) Received: by mail-io0-f174.google.com with SMTP id 38so3972850iol.0 for ; Wed, 17 Aug 2016 14:52:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version; bh=2Y+OQmI01x3Dx/xfE5COXwrxtkLolyZKVsJBfQ9ntk4=; b=WM6j+OkZqLLESz0AIGMxgRJOsGwm0Y4zqthHiAL9IW4mgmPJhM+zT7lv6VqL98qtu5 6JLfEwglpxwb8je0AgbdREJD0/lOQOoqh8di5n/S/0q7k8A6+9w6R758dnPQVannrraW O6d88VHzs7HEPe0BZSm5cPqO++cWLPitAACXdvlud+DFTghlkWKPpaq1rrjQ2hhglqLw gTohJDm+1lQBQO9W8+crAOGFe1SJN9LezfRP/m+6ANkRf57bVk1fyuPdjGGOCWFq3k7I PaVF+znbuYoyFnH2eDeaHI/3a4VlDcuxgDSj5VbZoAsBdOkG3+kX/ZP/TUrAYE23Z9o+ n7Ng== X-Gm-Message-State: AEkoouuKGDg/qImn2aCV0PejUQjQAxu4DO1vD4c+gvelDtJK4QhZ3cKBmbErWmFkCGWjdg== X-Received: by 10.107.131.11 with SMTP id f11mr50777333iod.136.1471470321616; Wed, 17 Aug 2016 14:45:21 -0700 (PDT) Received: from WorkBox.Home.gmail.com (174-30-205-119.mpls.qwest.net. [174.30.205.119]) by smtp.gmail.com with ESMTPSA id e125sm655927ith.20.2016.08.17.14.45.20 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Aug 2016 14:45:20 -0700 (PDT) References: User-agent: mu4e 0.9.16; emacs 24.5.1 From: Brandon J. Wandersee To: Manish Jain Cc: freebsd-questions Subject: Re: Facing a strange problem In-reply-to: Date: Wed, 17 Aug 2016 16:45:21 -0500 Message-ID: <864m6j3w9a.fsf@WorkBox.Home> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Aug 2016 21:52:55 -0000 Manish Jain writes: > I suppose the hard disk can also be ruled out it is a solid state > disk purchased just 2 months back. Actually, SSDs do indeed make a high-pitched noisen when active---at least the ones in my laptop do (two different brands and form factors). The noise is very soft and not really constant, though. It's more a syncopated, staccato "crackling" that sounds like a whine during high I/O, and you aren't likely to notice it unless the rest of the machine (and room, for that matter) is nearly silent. So unless you notice that the tone and rhythm of the sound matches up with the I/O of your system, disk isn't a likely source. -- :: Brandon J. Wandersee :: brandon.wandersee@gmail.com :: -------------------------------------------------- :: 'The best design is as little design as possible.' :: --- Dieter Rams ----------------------------------