From owner-freebsd-stable@freebsd.org Sun Sep 18 18:10:20 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 0136DBE0EF7 for ; Sun, 18 Sep 2016 18:10:20 +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 BA2E7BE1 for ; Sun, 18 Sep 2016 18:10:19 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD)) (envelope-from ) id 1blgXg-000CoW-71; Sun, 18 Sep 2016 21:10:16 +0300 Date: Sun, 18 Sep 2016 21:10:16 +0300 From: Slawa Olhovchenkov To: Hans Petter Selasky Cc: freebsd-stable@freebsd.org Subject: Re: 11.0 stuck on high network load Message-ID: <20160918181016.GK2840@zxy.spb.ru> References: <2490d030-e947-4842-8e91-6498864b0100@selasky.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2490d030-e947-4842-8e91-6498864b0100@selasky.org> 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, 18 Sep 2016 18:10:20 -0000 On Sun, Sep 18, 2016 at 07:50:08PM +0200, Hans Petter Selasky wrote: > Hi, > > Got some tips regarding this thread. > > Some things you can try: > > 1) Compile kernel from projects/hps_head instead of your 11-stable? How many difference from 11-stable? > 2) Set net.inet.tcp.per_cpu_timers=1 Already. From 10.x, by manual MFC. > 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