From owner-freebsd-questions@FreeBSD.ORG Thu May 21 18:19:55 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 0B8427A5 for ; Thu, 21 May 2015 18:19:55 +0000 (UTC) Received: from mail-ie0-x234.google.com (mail-ie0-x234.google.com [IPv6:2607:f8b0:4001:c03::234]) (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 CCA1912C2 for ; Thu, 21 May 2015 18:19:54 +0000 (UTC) Received: by ieczm2 with SMTP id zm2so14639180iec.1 for ; Thu, 21 May 2015 11:19:54 -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 :content-type; bh=9rTeG2BmbV9Nj2StO/l4shJ3LXIRivHib++u9lz92gM=; b=aTLrP+wztJg4eBDfC7aYWwh+wMgdTNuwcKf6LlzRFLYhVp0maoQmuRtYkyGFiyumOK SODq7hdw/7Jgwv8IOUQTMv580HpDVPkN+F3xBNFCBVmJD9cvVd5ocx+cd+rZiPnTjmLa wvzj0VdzypaqpXmdS2K5HkiWNuKbO+CZ86ef+WOuEo8cRBzP1YUJQiP7YmGKctPO5d2Y rRnmtC++C5An5wESGMfMh/qpevePFkU76JB8TVjgEl8KNiuUuMsBOwE7bSOjj0jcROyA /JUbUnXlyj2A4E8QkDFtCX6DEDmEaSSNAZ/jvFJJRaOl8uErOh9DG6R07p9gU1y4uYiM 5MEA== MIME-Version: 1.0 X-Received: by 10.107.132.138 with SMTP id o10mr5254093ioi.52.1432232394040; Thu, 21 May 2015 11:19:54 -0700 (PDT) Received: by 10.36.51.76 with HTTP; Thu, 21 May 2015 11:19:54 -0700 (PDT) In-Reply-To: <43064.128.135.70.2.1432223515.squirrel@cosmo.uchicago.edu> References: <43064.128.135.70.2.1432223515.squirrel@cosmo.uchicago.edu> Date: Thu, 21 May 2015 14:19:54 -0400 Message-ID: Subject: Re: End user RAM usage survey From: grarpamp To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 May 2015 18:19:55 -0000 Posting the "real memory" and the header lines from top would be useful for other users to see, along with the verbal descriptions. I suggested "using" because many users have far more physical memory installed than they will ever need. Thus quoting only the amount of installed memory doesn't provide much realworld usage insight for users. Here's a snapshot of a browsing and general user platform that includes both memory installed and in use. X, Mozilla and ZFS are the big consumers. Were ZFS switched to UFS, headroom does not really exist to permit distribute the RAM (1GB sticks) to other machines. And if they wanted to run VM it may estimate them to add up to 2GB/VM more. # grep "real mem" /var/run/dmesg.boot real memory = 2147483648 (2048 MB) # top 54 processes: 2 running, 51 sleeping, 1 waiting Mem: 479M Active, 90M Inact, 641M Wired, 344K Cache, 112M Buf, 779M Free ARC: 328M Total, 138M MFU, 174M MRU, 16K Anon, 3012K Header, 13M Other Swap: (Swap is disabled so that field shows blank.) (FreeBSD itself does not *require* swap. Swap is only required if your usage would exceed physical RAM and you wish to avoid process killing / crash.)