From owner-freebsd-current@FreeBSD.ORG Mon Jul 5 18:49:55 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 70DE016A4CE for ; Mon, 5 Jul 2004 18:49:55 +0000 (GMT) Received: from anna.web4.hm (anna.web4.hm [81.3.4.66]) by mx1.FreeBSD.org (Postfix) with SMTP id 7209B43D41 for ; Mon, 5 Jul 2004 18:49:52 +0000 (GMT) (envelope-from thorsten@tgreiner.net) Received: (qmail 8579 invoked by uid 760); 5 Jul 2004 18:49:46 -0000 Received: from thorsten@tgreiner.net by anna by uid 503 with qmail-scanner-1.21 (clamdscan: 0.70-rc. spamassassin: 2.63. Clear:RC:1(80.141.21.26):. Processed in 0.249809 secs); 05 Jul 2004 18:49:46 -0000 Received: from unknown (HELO tybalt) (80.141.21.26) by anna.web4.hm with SMTP; 5 Jul 2004 18:49:46 -0000 Date: Mon, 5 Jul 2004 20:49:40 +0200 From: Thorsten Greiner To: Bosko Milekic Message-ID: <20040705184940.GA2651@tybalt.greiner.local> References: <20040705150418.GA92528@freefall.freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IS0zKkzwUGydFO0o" Content-Disposition: inline In-Reply-To: <20040705150418.GA92528@freefall.freebsd.org> X-GPG-Fingerprint: ED45 DF41 BE30 6FF5 DC4F 15C3 4538 6598 E865 F66A User-Agent: Mutt/1.5.6i cc: "Michael L. Hostbaek" cc: Gleb Smirnoff cc: current@freebsd.org Subject: Native preemption is the culprit [was Re: today's CURRENT lockups] 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, 05 Jul 2004 18:49:55 -0000 --IS0zKkzwUGydFO0o Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Bosko Milekic [2004-07-05 17:16]: > 2. What scheduler are you running with, have you tried the other > one? 4BSD. Did not try ULE. > 3. Is DDB, INVARIANTS, and/or WITNESS compiled into your kernel? Tried with DDB, INVARIANTS and WITNESS. Still froze solid. > 6. Do you have serial console, if so can you get anything once > the seeming "lockup" occurs? (it may not be a lockup, you > might just not be able to see anything because of X dying). No, unfortunately not. I am sure it is a hard freeze, because usually I can iniate a clean shutdown by pressing the power-off button (via ACPI). > 7. Can you turn off ACPI and see if the problem goes away? Since Gleb Smirnoff reported the problem with ACPI off and mine is happening with ACPI on it seems unlikely that ACPI is the culprit. > 8. Can you backout the preemption change (jhb a few days ago) > and see if the problem goes away? I have manually backed out the changes introduced by the commit referenced here: http://docs.FreeBSD.org/cgi/mid.cgi?200407021721.52787.jhb Sofar I was unable to reproduce the freeze. Maybe Gleb or someone else experiencing the problem can try this, too? Regards -Thorsten --=20 It is easier to write an incorrect program than understand a correct one. =20 This message is digitally signed. To verify its integrity, download a copy of GnuPG for your operating system from http://www.gnupg.org . --IS0zKkzwUGydFO0o Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFA6aLERThlmOhl9moRApGbAJ9lqWlzsl2hgY5yMhYVVIygfgwe0gCg5wNr /pLfOYtJYjKb4ZSyjr/ujiQ= =5Wbd -----END PGP SIGNATURE----- --IS0zKkzwUGydFO0o--