From owner-freebsd-questions@FreeBSD.ORG  Mon Jan 24 12:18:36 2011
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 66B6F1065679
	for <freebsd-questions@freebsd.org>;
	Mon, 24 Jan 2011 12:18:36 +0000 (UTC)
	(envelope-from rwmaillists@googlemail.com)
Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com
	[74.125.82.182])
	by mx1.freebsd.org (Postfix) with ESMTP id ED72C8FC17
	for <freebsd-questions@freebsd.org>;
	Mon, 24 Jan 2011 12:18:35 +0000 (UTC)
Received: by wyf19 with SMTP id 19so3995424wyf.13
	for <freebsd-questions@freebsd.org>;
	Mon, 24 Jan 2011 04:18:35 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=googlemail.com; s=gamma;
	h=domainkey-signature:date:from:to:subject:message-id:in-reply-to
	:references:x-mailer:mime-version:content-type
	:content-transfer-encoding;
	bh=TgJiSPW2vzxxLzh/ZJPAnoez1ucf8dFHbJ2nXVVLUDs=;
	b=OV67fPuOKWBaKUrzcpXtsPciN4cPx7364lgG+tIq1FdrdMBq0GSF4Jc0GmoxOi5I2P
	uyGK8T7h7iYZFYo7ZN0de6iCGbYEaUJEfERqQ4gh0k1gBXsirL98yYTGjvhqwoDZCDwv
	f9vN7MFJKAU4Qqosh3xJCydiZ/OyRPx03q538=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma;
	h=date:from:to:subject:message-id:in-reply-to:references:x-mailer
	:mime-version:content-type:content-transfer-encoding;
	b=NoxxY0AX+taK2ldZPK+MZPkTj0drX5ClO5rXFlKYNuWM055apFiDj4WSx+BGRm/NMi
	jvou9lrL4tsl+UEJqGoV7nNqZwtOI7NIP840WlbrdaeAw5RERsjE+kBHoLu/7JIBcy6e
	pAbtWY04ViQHu4hdkGY5gK2JDgINlOi9CHp6A=
Received: by 10.227.209.9 with SMTP id ge9mr578097wbb.81.1295871514974;
	Mon, 24 Jan 2011 04:18:34 -0800 (PST)
Received: from gumby.homeunix.com (87-194-105-247.bethere.co.uk
	[87.194.105.247])
	by mx.google.com with ESMTPS id 11sm9234910wbi.0.2011.01.24.04.18.30
	(version=SSLv3 cipher=RC4-MD5); Mon, 24 Jan 2011 04:18:33 -0800 (PST)
Date: Mon, 24 Jan 2011 12:18:21 +0000
From: RW <rwmaillists@googlemail.com>
To: freebsd-questions@freebsd.org
Message-ID: <20110124121821.107c2061@gumby.homeunix.com>
In-Reply-To: <12db3210cd2.-2509072410058136592.-3952788888916668261@zoho.com>
References: <12db3210cd2.-2509072410058136592.-3952788888916668261@zoho.com>
X-Mailer: Claws Mail 3.7.8 (GTK+ 2.22.1; i386-portbld-freebsd8.1)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Subject: Re: putting "/tmp" to memory
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 24 Jan 2011 12:18:36 -0000

On Sun, 23 Jan 2011 05:47:23 -0800
kellyremo <kellyremo@zoho.com> wrote:

> 
> "to memory" means: mounting a ~2 GByte filesystem [ tmpfs?, or
> ramfs? ], and put the "/tmp" on it. [ e.g.: 4 GByte ram in the pc ].
> what to write in the "/etc/fstab"? 

I have 

tmpfs    /tmp   tmpfs  rw,size=4280000000

I would suggest you don't use tmpmfs="YES" in rc.conf unless you are
being very conservative with a production server. tmpfs is nominally
experimental, but it seems to be very stable, and it's much more memory
efficient than md devices.  


>  Advantages:
>  - Memory is way faster then HDD/SSD, so it could speed things up

It's not all that much faster due caching and soft-updates on hard
disks.    

>  Disadvantages: 
>  - Security? [ how to set this up to be secure? any clear
> howtos/links regarding it? :O ] 

Do you have any particular concerns?