From owner-freebsd-current@FreeBSD.ORG  Wed Apr  4 03:51:40 2012
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 80D85106564A
	for <freebsd-current@freebsd.org>; Wed,  4 Apr 2012 03:51:40 +0000 (UTC)
	(envelope-from mj@feral.com)
Received: from ns1.feral.com (ns1.feral.com [192.67.166.1])
	by mx1.freebsd.org (Postfix) with ESMTP id 57B1D8FC0A
	for <freebsd-current@freebsd.org>; Wed,  4 Apr 2012 03:51:40 +0000 (UTC)
Received: from [172.16.199.125] (24-180-37-162.static.reno.nv.charter.com
	[24.180.37.162]) (authenticated bits=0)
	by ns1.feral.com (8.14.4/8.14.4) with ESMTP id q343pXtL003388
	(version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO)
	for <freebsd-current@freebsd.org>; Tue, 3 Apr 2012 20:51:34 -0700 (PDT)
	(envelope-from mj@feral.com)
Message-ID: <4F7BC540.1090503@feral.com>
Date: Tue, 03 Apr 2012 20:51:28 -0700
From: Matthew Jacob <mj@feral.com>
Organization: Feral Software
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:11.0) Gecko/20120327 Thunderbird/11.0.1
MIME-Version: 1.0
To: freebsd-current@freebsd.org
References: <4F7BA173.6050903@freebsd.org>
	<alpine.GSO.2.01.1204032046130.1678@freddy.simplesystems.org>
In-Reply-To: <alpine.GSO.2.01.1204032046130.1678@freddy.simplesystems.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7
	(ns1.feral.com [192.67.166.1]);
	Tue, 03 Apr 2012 20:51:34 -0700 (PDT)
Subject: Re: "trim/discard" success story
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Matt Jacob <mjacob@freebsd.org>
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 04 Apr 2012 03:51:40 -0000

My experience at Alacritech was that Trim was so expensive timewise that 
it could not be used in that application space. Instead, SECURITY ERASE 
on the relatively infrequent reboots cleaned things up pretty well.

This should be with a grain of salt because I expect trim timings are 
not only vendor dependent but firmware release dependent.