From owner-freebsd-current@FreeBSD.ORG Thu Oct 21 21:08:29 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 4C15D16A4CE for ; Thu, 21 Oct 2004 21:08:29 +0000 (GMT) Received: from mail1.speakeasy.net (mail1.speakeasy.net [216.254.0.201]) by mx1.FreeBSD.org (Postfix) with ESMTP id 21AD543D41 for ; Thu, 21 Oct 2004 21:08:29 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: (qmail 25402 invoked from network); 21 Oct 2004 21:08:28 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 21 Oct 2004 21:08:28 -0000 Received: from [10.50.41.228] (gw1.twc.weather.com [216.133.140.1]) (authenticated bits=0) by server.baldwin.cx (8.12.11/8.12.11) with ESMTP id i9LL8MxG068843; Thu, 21 Oct 2004 17:08:25 -0400 (EDT) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: freebsd-current@FreeBSD.org Date: Thu, 21 Oct 2004 17:05:45 -0400 User-Agent: KMail/1.6.2 References: <20041020221659.33824.qmail@web21124.mail.yahoo.com> <1098320716.20390.416.camel@palm.tree.com> In-Reply-To: <1098320716.20390.416.camel@palm.tree.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200410211705.45147.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx cc: Nik Azim Azam cc: Stephan Uphoff Subject: Re: number of CPUs and IPI panic 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: Thu, 21 Oct 2004 21:08:29 -0000 On Wednesday 20 October 2004 09:05 pm, Stephan Uphoff wrote: > Can you try the attached patch? > ( Hope it still applies since it is a few weeks old) > > If this does not work I have a few more questions next week. Unfortunately it can enable interrupts with sched_lock held which can result in deadlocks due to ithread preemption (IIRC, maybe not as badly with the newer preemption code.) > Stephan > > On Wed, 2004-10-20 at 18:16, Nik Azim Azam wrote: > > sorry for not posting this information earlier. > > > > i'm running on SCHED_4BSD, with PREEMPTION. the same > > panic occours without PREEMPTION. the kernel is > > generic except that i've removed some devices that i > > dont need. > > > > --- Gavin Atkinson > > > > wrote: > > > On Wed, 20 Oct 2004, Nik Azim Azam wrote: > > > > hello list, > > > > > > > > i'm doing some testing on a 6 cpu pentium II > > > > > > overdrive > > > > > > > computer with 6-CURRENT. with 6 cpus, the system > > > > > > will > > > > > > > panic easily with moderate load (previous IPI is > > > > stuck). i edited sys/i386/sys/param.h file and > > > > > > lowered > > > > > > > the MAXCPU to 4. now the system is running with 4 > > > > > > cpus > > > > > > > and it survived a make buildworld + portupgrade at > > > > > > the > > > > > > > same time. > > > > > > > > is this a known problem? i can give more > > > > > > information > > > > > > > if anyone interested. > > > > > > Are you using SCHED_ULE? (I believe it's the default > > > in 6-CURRENT...) > > > > > > If so, try with SCHED_4BSD. ULE has known problems > > > at the moment. > > > > > > Gavin > > > > _______________________________ > > Do you Yahoo!? > > Declare Yourself - Register online to vote today! > > http://vote.yahoo.com > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to > > "freebsd-current-unsubscribe@freebsd.org" -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org