From owner-svn-src-head@FreeBSD.ORG  Thu May 21 16:30:22 2009
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id E7E1E1065670;
	Thu, 21 May 2009 16:30:22 +0000 (UTC) (envelope-from ed@hoeg.nl)
Received: from palm.hoeg.nl (mx0.hoeg.nl [IPv6:2001:7b8:613:100::211])
	by mx1.freebsd.org (Postfix) with ESMTP id 340A88FC1C;
	Thu, 21 May 2009 16:30:22 +0000 (UTC) (envelope-from ed@hoeg.nl)
Received: by palm.hoeg.nl (Postfix, from userid 1000)
	id 1080F1D00F; Thu, 21 May 2009 18:30:21 +0200 (CEST)
Date: Thu, 21 May 2009 18:30:21 +0200
From: Ed Schouten <ed@80386.nl>
To: Kostik Belousov <kostikbel@gmail.com>
Message-ID: <20090521163021.GK1271@hoeg.nl>
References: <200905211619.n4LGJsDV071739@svn.freebsd.org>
	<20090521162422.GR1927@deviant.kiev.zoral.com.ua>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="1ppIqr1kl39GnwQx"
Content-Disposition: inline
In-Reply-To: <20090521162422.GR1927@deviant.kiev.zoral.com.ua>
User-Agent: Mutt/1.5.19 (2009-01-05)
Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org
Subject: Re: svn commit: r192544 - head/sys/kern
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 21 May 2009 16:30:23 -0000


--1ppIqr1kl39GnwQx
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

* Kostik Belousov <kostikbel@gmail.com> wrote:
> Why is this enabled by sysctl ? Such feature shall be unconditional if
> it has any value.

Because it reduces performance significantly. If I remember correctly,
UMTS devices (u3g, etc) have big buffer sizes. This means that we have
to zero a lot of memory.

The code was already present, but not enabled, so I thought it would
have been better to at least offer it as an easy to enable feature.

--=20
 Ed Schouten <ed@80386.nl>
 WWW: http://80386.nl/

--1ppIqr1kl39GnwQx
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (FreeBSD)

iEYEARECAAYFAkoVgZwACgkQ52SDGA2eCwUpGgCfWDObtPp83D72qzfErPImznVz
x8IAnRvpdHooADnA5phJuiCRmgQHLwsQ
=nc+b
-----END PGP SIGNATURE-----

--1ppIqr1kl39GnwQx--