From owner-freebsd-current@FreeBSD.ORG Wed Aug 2 21:33:49 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org 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 E74A816A4DA; Wed, 2 Aug 2006 21:33:49 +0000 (UTC) (envelope-from kmacy@fsmware.com) Received: from demos.bsdclusters.com (demos.bsdclusters.com [69.55.225.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9887D43D45; Wed, 2 Aug 2006 21:33:49 +0000 (GMT) (envelope-from kmacy@fsmware.com) Received: from demos.bsdclusters.com (demos [69.55.225.36]) by demos.bsdclusters.com (8.12.8p1/8.12.8) with ESMTP id k72LXnlZ077812; Wed, 2 Aug 2006 14:33:49 -0700 (PDT) (envelope-from kmacy@fsmware.com) Received: from localhost (kmacy@localhost) by demos.bsdclusters.com (8.12.8p1/8.12.8/Submit) with ESMTP id k72LXn65077809; Wed, 2 Aug 2006 14:33:49 -0700 (PDT) X-Authentication-Warning: demos.bsdclusters.com: kmacy owned process doing -bs Date: Wed, 2 Aug 2006 14:33:49 -0700 (PDT) From: Kip Macy X-X-Sender: kmacy@demos.bsdclusters.com To: Daniel Eischen In-Reply-To: Message-ID: <20060802141115.D71770@demos.bsdclusters.com> References: <1154527524.93666.22.camel@tobias.home.web-wahnsinn.de> <20060802194817.GA53062@what-creek.com> <20060802135246.J66851@demos.bsdclusters.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Mailman-Approved-At: Wed, 02 Aug 2006 22:46:20 +0000 Cc: freebsd-current@freebsd.org, John Birrell , Tobias Gro?er Subject: Re: DTRACE build failure (/usr/obj/usr/src/tmp/usr/bin/ld: cannot find -lpthread) 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: Wed, 02 Aug 2006 21:33:50 -0000 I described it previously. Signals won't always be sent to the right process, i.e. running a process under GDB the debuggee will sometimes get the SIGTRAP instead of GDB. When restarting mysql, mysql-server becomes unkillable. Removing KSE (bike_sched et al.) makes the problem go away. It is trivial to hit on sun4v. However, I've seen it (or a problem with similar symptoms) on x86 using NetApp's development simulator which makes very heavy use of signals. I believe NetApp ended up giving up on using FreeBSD for running their simulator as this problem made FreeBSD a non-starter for them. I no longer work for NetApp so I don't have access to the sources for the simulator any more, so I don't know if bike_sched fixes that problem for them or not. -Kip On Wed, 2 Aug 2006, Daniel Eischen wrote: > On Wed, 2 Aug 2006, Kip Macy wrote: > > > sun4u is a dead architecture. Signals are broken with KSE on a > > tightly coupled SMP so sun4v doesn't even have KSE in the tree. > > On every platform or on sparc64? I am unaware of any signal > problems in i386. > > > Unless someone steps up to fix KSE "will not work" is more correct. > > Please clarify. > > -- > DE > _______________________________________________ > 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" >