From owner-freebsd-current@FreeBSD.ORG Tue Jul 3 06:22:31 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 83A4016A469 for ; Tue, 3 Jul 2007 06:22:31 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from webaccess-cl.virtdom.com (webaccess-cl.virtdom.com [216.240.101.25]) by mx1.freebsd.org (Postfix) with ESMTP id 4B5EB13C4D3 for ; Tue, 3 Jul 2007 06:22:31 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from [192.168.1.101] (c-71-231-138-78.hsd1.or.comcast.net [71.231.138.78]) (authenticated bits=0) by webaccess-cl.virtdom.com (8.13.6/8.13.6) with ESMTP id l636MMcQ056000 (version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO); Tue, 3 Jul 2007 02:22:23 -0400 (EDT) (envelope-from jroberson@chesapeake.net) Date: Mon, 2 Jul 2007 23:22:00 -0700 (PDT) From: Jeff Roberson X-X-Sender: jroberson@10.0.0.1 To: Thomas Sparrevohn In-Reply-To: <200707022031.32359.Thomas.Sparrevohn@btinternet.com> Message-ID: <20070702232119.X552@10.0.0.1> References: <20070701224452.I552@10.0.0.1> <200707021956.01128.Thomas.Sparrevohn@btinternet.com> <20070702120147.F552@10.0.0.1> <200707022031.32359.Thomas.Sparrevohn@btinternet.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-current@freebsd.org Subject: Re: New SCHED_SMP diff. 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: Tue, 03 Jul 2007 06:22:31 -0000 On Mon, 2 Jul 2007, Thomas Sparrevohn wrote: > On Monday 02 July 2007 20:02:41 Jeff Roberson wrote: >> On Mon, 2 Jul 2007, Thomas Sparrevohn wrote: >> >>> >> >> Hi, can you try sysctl kern.sched.steal_busy=1? Please tell me if that >> improves things. This will resolve short-term load imbalances by stealing >> threads from other processors. >> >> Thanks, >> Jeff >> > > If I enable "kern.sched.steal_busy" the system panics within a couple > of seconds with a "spin lock held to long". > > Mind you that the kernels I have use has all debugging turned off e.g. > no WITHNESS etc. so it could be that - I quite a while if I am to rerun > all tests with WITHNESS etc enabled - Do you want me to or do you have > a suggestion as to why it panics? Hey Thomas, sorry for the bug, can you try the scheduler at: http://people.freebsd.org/~jeff/sched_smp.c Thanks, Jeff > > _______________________________________________ > 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" >