From owner-freebsd-questions@FreeBSD.ORG Wed Dec 13 23:27:54 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 7A16216A416 for ; Wed, 13 Dec 2006 23:27:54 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id E1E5A43CA5 for ; Wed, 13 Dec 2006 23:25:55 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 41F281A4D9B; Wed, 13 Dec 2006 15:27:27 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id A02DE513F8; Wed, 13 Dec 2006 18:27:26 -0500 (EST) Date: Wed, 13 Dec 2006 18:27:26 -0500 From: Kris Kennaway To: Dieter Message-ID: <20061213232726.GA61149@xor.obsecurity.org> References: <200612111832.SAA23589@sopwith.solgatos.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="zhXaljGHf11kAtnf" Content-Disposition: inline In-Reply-To: <200612111832.SAA23589@sopwith.solgatos.com> User-Agent: Mutt/1.4.2.2i Cc: freebsd-questions@freebsd.org Subject: Re: processes not getting fair share of available disk I/O (was: Re: TCP parameters and interpreting tcpdump output ) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Dec 2006 23:27:54 -0000 --zhXaljGHf11kAtnf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Dec 11, 2006 at 10:32:53AM +0000, Dieter wrote: > > Did this problem start before you made port2file run with rtprio? >=20 > Yes. I only added rtprio because it wasn't working. >=20 > > Can you please include a copy of your kernel configuration file and dme= sg? >=20 > I think you asked that before: :-) OK, sorry - I lost track. > Is Giant the only mutex/lock that could be a bottleneck across disks? The only one I can think of that is generic. One would have to do more extensive profiling and diagnosis to try and figure out what is wrong with your system. The only explanation that seems to fit is that it's something to do with your particular hardware (i.e. driver issue), since it's certainly not a problem on general configurations. I know that many people have bad things to say about nforce chipsets, although I dont know if your particular problem has been reported before. Kris --zhXaljGHf11kAtnf Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFgIxeWry0BWjoQKURAjQdAKD10yVK5OighGm1kQ5W25DYIcgOIACgsI0I XQZN/9av7Vo6TLqW8snrij4= =Gktu -----END PGP SIGNATURE----- --zhXaljGHf11kAtnf--