From owner-freebsd-current@FreeBSD.ORG Mon Aug 23 11:13:07 2004 Return-Path: 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 F1B0F16A4CE for ; Mon, 23 Aug 2004 11:13:06 +0000 (GMT) Received: from zaphod.nitro.dk (port324.ds1-khk.adsl.cybercity.dk [212.242.113.79]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4860343D1F for ; Mon, 23 Aug 2004 11:13:06 +0000 (GMT) (envelope-from simon@zaphod.nitro.dk) Received: by zaphod.nitro.dk (Postfix, from userid 3000) id B26EC11AB1; Mon, 23 Aug 2004 13:13:04 +0200 (CEST) Date: Mon, 23 Aug 2004 13:13:04 +0200 From: "Simon L. Nielsen" To: Doug White Message-ID: <20040823111304.GA767@zaphod.nitro.dk> References: <20040822115345.Y94593@carver.gumbysoft.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="BOKacYhQ+x31HxR3" Content-Disposition: inline In-Reply-To: <20040822115345.Y94593@carver.gumbysoft.com> User-Agent: Mutt/1.5.6i cc: freebsd-current@freebsd.org Subject: Re: PLEASE TEST: IPI deadlock avoidance patch X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Mon, 23 Aug 2004 11:13:07 -0000 --BOKacYhQ+x31HxR3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2004.08.22 12:05:39 -0700, Doug White wrote: > Hey folks, > > If you have a reasonably fast i386 or amd64 multiprocessor and/or > hyperthreading machine and are experiencing reproducible hangs during -j > buildwords and other highly parallel operations, please try this patch: > > http://people.freebsd.org/~dwhite/smp_rv_mtx.patch With stock CURRENT my Dual XEON test system has hung most of the time when I did a parallel buildworld. Since I applied this patch last night the system has completed 12 -j100 buildworlds, and it's still going on, without any problems :-). Thanks to all the people who have worked on this problem! :-) BTW. these tests were with the 4BSD scheduler, I'm going to try to switch to ULE soon and se how that works out. --=20 Simon L. Nielsen FreeBSD Documentation Team --BOKacYhQ+x31HxR3 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBKdFAh9pcDSc1mlERAircAKDEYgPz8HP4ObSswF6PpI5GSmQAHQCgrNHz TY5no1TgBunNhpmdp27YScY= =obfG -----END PGP SIGNATURE----- --BOKacYhQ+x31HxR3--