From owner-freebsd-questions@freebsd.org Fri Nov 18 22:53:18 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 D1222C48DC2 for ; Fri, 18 Nov 2016 22:53:18 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-vk0-x233.google.com (mail-vk0-x233.google.com [IPv6:2607:f8b0:400c:c05::233]) (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 8A2A8A0D for ; Fri, 18 Nov 2016 22:53:18 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: by mail-vk0-x233.google.com with SMTP id x186so179649250vkd.1 for ; Fri, 18 Nov 2016 14:53:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=6nT2CGGE4d4QdyEAfnbge3XAqwFo/3DWbBzQaYdUkQk=; b=NAjSbX4QqU/JTX/JmythoCkfRDAwyEnh9HO6jEfwXH3kW0R9CySznlLE+yaz12it+e W2mWF+R56XfZT9XFFfiHKwQuOvzZj2a3cZrK3hDc7LNE2jhkBwZf1ngF+B6VP0QVQ7Yz UYzbIFfNR3dcJE8wRtWjlXwo/E0VNIV9JHxOeG2H8e/wS2MfrzVBcH93r5llIREvpblf KrlWr9XCmzc4Z5US+1FG4kb+V3zg7Y77DIXbHr4Jjz87Fgjx61EmdGwY+xhBGzhrGc/w OZsZceKGbPixYsgviVAFLoElC2z1kWgTe9y0ivdXvIogdXmsv3DNo3tznew4ysIMMuiE eTMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=6nT2CGGE4d4QdyEAfnbge3XAqwFo/3DWbBzQaYdUkQk=; b=freYZB9ycsasTh/R4PmDkwQ1L3xDjVhHCWcfEHtRobNsPS4YnK/VkEUm7zGqEnGyRn SvBe3yEl2Jve4Tmn0jhLeKQr1psHkdmKphkwaepX7nyEJIwYXF+qm2/qM4c+QKK6lIrh 24C/4t3KC43OsFWfQzdOI5NTIArkxkbSmvxfMm+E0x8cvmuoPC2cHv2E9TpBYrowtYXJ Ejmty17OWwRmMgATbI7PXic0ZvIfRLiv3v/oyzBTjNahiE9n1D06jWZjkap30XOK6LJv PmPY+sEIbDYt+r5ur0qRl4Ly+Ga+uH7fPhN70x4gSfh4GLp4z27OUhNwXsDQAqujLS1l aGDQ== X-Gm-Message-State: AKaTC01zQqu8BO5SnAvFCyfg9RZZMh98Et877W/4kmUg9j/Nx/1t/BQ5EkBOcxZ03jQa2soD1Huw/yXEpejdXw== X-Received: by 10.31.201.7 with SMTP id z7mr1140644vkf.67.1479509597646; Fri, 18 Nov 2016 14:53:17 -0800 (PST) MIME-Version: 1.0 Received: by 10.103.69.73 with HTTP; Fri, 18 Nov 2016 14:53:16 -0800 (PST) In-Reply-To: <9966b2a4-8812-3de1-8a9e-05bc96c8ef3c@kukulies.org> References: <9966b2a4-8812-3de1-8a9e-05bc96c8ef3c@kukulies.org> From: Adam Vande More Date: Fri, 18 Nov 2016 16:53:16 -0600 Message-ID: Subject: Re: testing SSD performance To: "Christoph P.U. Kukulies" Cc: "freebsd-questions@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Nov 2016 22:53:18 -0000 On Fri, Nov 18, 2016 at 8:37 AM, Christoph P.U. Kukulies wrote: > I was running an older FreeBSD (9.2) for quite a while now with the root > FS (and swap) an an SSD drive (100GB). > > While upgrading the system to 11.0 and while observing quit elong > buildworld times I'm wondering myself if my SSD possibly might have gotten > degraded > some extent. I've read that SSD tend to run slow on writes over time, > especially when no provisions were taken to e.g. fill them up just up to > 2/3 of their max capacity to leave room for firmware storage management. > Not really at least with decent+ hardware. http://techreport.com/review/27909/the-ssd-endurance-experiment-theyre-all-dead -- Adam