From owner-freebsd-stable@freebsd.org Sun Sep 4 21:57:42 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 8F13CA9D802 for ; Sun, 4 Sep 2016 21:57:42 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (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 54F68D5B for ; Sun, 4 Sep 2016 21:57:42 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD)) (envelope-from ) id 1bgfQ3-000AN9-5G for freebsd-stable@FreeBSD.org; Mon, 05 Sep 2016 00:57:39 +0300 Date: Mon, 5 Sep 2016 00:57:39 +0300 From: Slawa Olhovchenkov To: freebsd-stable@FreeBSD.org Subject: 11.0 stuck on high network load Message-ID: <20160904215739.GC22212@zxy.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false 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, 04 Sep 2016 21:57:42 -0000 I am try using 11.0 on Dual E5-2620 (no X2APIC). Under high network load and may be addtional conditional system go to unresponsible state -- no reaction to network and console (USB IPMI emulation). INVARIANTS give to high overhad. Is this exist some way to debug this?