From owner-freebsd-current@FreeBSD.ORG Wed Nov 23 23:57:44 2005 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 03FDF16A41F; Wed, 23 Nov 2005 23:57:44 +0000 (GMT) (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 7172743D4C; Wed, 23 Nov 2005 23:57:43 +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 4B66F1A3C29; Wed, 23 Nov 2005 15:57:43 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 5073F5158D; Wed, 23 Nov 2005 18:57:42 -0500 (EST) Date: Wed, 23 Nov 2005 18:57:42 -0500 From: Kris Kennaway To: David Xu Message-ID: <20051123235741.GA10825@xor.obsecurity.org> References: <20051123201837.GA4822@xor.obsecurity.org> <438500BE.3020507@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IJpNTDwzlM2Ie8A6" Content-Disposition: inline In-Reply-To: <438500BE.3020507@freebsd.org> User-Agent: Mutt/1.4.2.1i Cc: current@FreeBSD.org, Kris Kennaway Subject: Re: 4BSD process starvation during I/O X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Nov 2005 23:57:44 -0000 --IJpNTDwzlM2Ie8A6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 24, 2005 at 07:52:30AM +0800, David Xu wrote: > Kris Kennaway wrote: >=20 > >Perhaps this can be tweaked. > > > >Kris > > > >P.S. Please, no responses about how maybe someone could write a new > >scheduler that doesn't have this property. > > > > > >=20 > > > Can you try it again with FULL_PREEMPTION is turned on ? OK. Is this option believed to be "safe" (i.e. largely free from bugs), and would it be useful to test more widely? Kris --IJpNTDwzlM2Ie8A6 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDhQH1Wry0BWjoQKURAkVNAJ4hOLWU2ec6WHjqo3vk/lx20M2W1QCfXtAr 2MO/9w0N9LXIMqECD3hdLJU= =d6/3 -----END PGP SIGNATURE----- --IJpNTDwzlM2Ie8A6--