From owner-freebsd-stable@freebsd.org Sun Sep 18 17:45:25 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8F29ABE08EE for ; Sun, 18 Sep 2016 17:45:25 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (mail.turbocat.net [IPv6:2a01:4f8:d16:4514::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 5C533C96 for ; Sun, 18 Sep 2016 17:45:25 +0000 (UTC) (envelope-from hps@selasky.org) Received: from laptop015.home.selasky.org (unknown [62.141.129.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 3CE7C1FE023; Sun, 18 Sep 2016 19:45:21 +0200 (CEST) To: slw@zxy.spb.ru, freebsd-stable@freebsd.org From: Hans Petter Selasky Subject: 11.0 stuck on high network load Message-ID: <2490d030-e947-4842-8e91-6498864b0100@selasky.org> Date: Sun, 18 Sep 2016 19:50:08 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Sep 2016 17:45:25 -0000 Hi, Got some tips regarding this thread. Some things you can try: 1) Compile kernel from projects/hps_head instead of your 11-stable? 2) Set net.inet.tcp.per_cpu_timers=1 If the system just hangs, it is pretty likely that the timers are going in a loop due to typical use after free. Please keep me CC'ed, hence I'm not subscribed to @stable. --HPS