From owner-freebsd-current@FreeBSD.ORG Fri Jul 9 17:51:35 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 CAC4F16A4CF for ; Fri, 9 Jul 2004 17:51:35 +0000 (GMT) Received: from mail6.speakeasy.net (mail6.speakeasy.net [216.254.0.206]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9CF9743D41 for ; Fri, 9 Jul 2004 17:51:35 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: (qmail 19147 invoked from network); 9 Jul 2004 17:51:35 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 9 Jul 2004 17:51:34 -0000 Received: from 10.50.41.229 (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.11/8.12.11) with ESMTP id i69HpVPX088905; Fri, 9 Jul 2004 13:51:31 -0400 (EDT) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: freebsd-current@FreeBSD.org Date: Fri, 9 Jul 2004 13:52:46 -0400 User-Agent: KMail/1.6 References: In-Reply-To: MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200407091352.46646.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx cc: Robert Watson cc: current@FreeBSD.org Subject: Re: panic: Assertion td->td_turnstile != NULL failed at ../../../kern/subr_turnstile.c:478 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: Fri, 09 Jul 2004 17:51:35 -0000 On Thursday 08 July 2004 10:31 pm, Robert Watson wrote: > Was doing some stress testing on a box with some if_xl locking tweaks from > Bruce Simpson, and ran into this. Configuration is a GENERIC kernel > running on a dual-Xeon 2.4GHz (each one with two logical processors, so > 4 HTT processors). The workload was as follows: > > - Apache 1.3 running on the box, 20 recursive wget clients from an > adjacent machine. > > - Simultaneous "supersmack" select key mysql test running with 11 threads > and 10,000 transactions, running with libkse. > > I attempted to log in on the serial console and got this panic: > > login: root > Password:panic: Assertion td->td_turnstile != NULL failed at > ../../../kern/subr_turnstile.c:478 This means your thread has no turnstile to give to the lock it is blocking on. Are you using TURNSTILE_PROFILING on this box? -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org