From owner-freebsd-threads@FreeBSD.ORG Tue May 13 13:45:44 2008 Return-Path: Delivered-To: freebsd-threads@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8FE941065672 for ; Tue, 13 May 2008 13:45:44 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from falcon.cybervisiontech.com (falcon.cybervisiontech.com [217.20.163.9]) by mx1.freebsd.org (Postfix) with ESMTP id 4A1D68FC21 for ; Tue, 13 May 2008 13:45:44 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from localhost (localhost [127.0.0.1]) by falcon.cybervisiontech.com (Postfix) with ESMTP id 34FBE744004 for ; Tue, 13 May 2008 16:26:47 +0300 (EEST) X-Virus-Scanned: Debian amavisd-new at falcon.cybervisiontech.com Received: from falcon.cybervisiontech.com ([127.0.0.1]) by localhost (falcon.cybervisiontech.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N8J15d8lsgsN for ; Tue, 13 May 2008 16:26:47 +0300 (EEST) Received: from [10.2.1.87] (gateway.cybervisiontech.com.ua [88.81.251.18]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by falcon.cybervisiontech.com (Postfix) with ESMTP id D6757744003 for ; Tue, 13 May 2008 16:26:46 +0300 (EEST) Message-ID: <48299715.8010303@icyb.net.ua> Date: Tue, 13 May 2008 16:26:45 +0300 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.12 (X11/20080311) MIME-Version: 1.0 To: freebsd-threads@freebsd.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: RELENG_7 libthr: _umtx_op -1 errno 60 Operation timed out X-BeenThere: freebsd-threads@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Threading on FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 May 2008 13:45:44 -0000 I observe the following issue with some programs (e.g. firefox) from time. A completely idle program suddenly starts using a lot of CPU and sometimes memory too. For example, minimized firefox with no pages open. Restarting the program make the behavior go away. On one such occasion I ran ktrace on firefox and I saw a lot of messages like the following in kdump: 13974 firefox-bin RET _umtx_op -1 errno 60 Operation timed out Attaching with gdb I also saw a quite strange stack (unfortunately firefox and the libs are without debug). I didn't save it but it looked something like the following: __error() ?? ?? pthread_cond_init() ?? I wonder what could be a cause of this. Could it be some sort of resource limitation? -- Andriy Gapon