From owner-freebsd-current@freebsd.org Fri Mar 25 20:30:03 2016 Return-Path: Delivered-To: freebsd-current@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 E98D9ADDA4F for ; Fri, 25 Mar 2016 20:30:03 +0000 (UTC) (envelope-from ohartman@zedat.fu-berlin.de) Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) (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 B1772180B for ; Fri, 25 Mar 2016 20:30:02 +0000 (UTC) (envelope-from ohartman@zedat.fu-berlin.de) Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.85) for freebsd-current@freebsd.org with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (envelope-from ) id <1ajYMq-000P4C-TJ>; Fri, 25 Mar 2016 21:30:00 +0100 Received: from x5ce12f54.dyn.telefonica.de ([92.225.47.84] helo=thor.walstatt.dynvpn.de) by inpost2.zedat.fu-berlin.de (Exim 4.85) for freebsd-current@freebsd.org with esmtpsa (TLSv1.2:AES128-GCM-SHA256:128) (envelope-from ) id <1ajYMq-000CwX-KL>; Fri, 25 Mar 2016 21:30:00 +0100 Date: Fri, 25 Mar 2016 21:30:25 +0100 From: "O. Hartmann" To: FreeBSD CURRENT Subject: CURRENT slow and shaky network stability Message-ID: <20160325213025.61c41f2c.ohartman@zedat.fu-berlin.de> Organization: FU Berlin X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.29; amd64-portbld-freebsd11.0) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Originating-IP: 92.225.47.84 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.21 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: Fri, 25 Mar 2016 20:30:04 -0000 Since a couple of days now, FreeBSD CURRENT (at the moment with FreeBSD 11.0-CURRENT #9 r297267: Fri Mar 25 09:48:07 CET 2016 amd64) "feels" a kind of shaky and like "glue": it is slow with X11, sometimes ssh connections even nearby hosts on the same net not under load have some time to respond to keys in xterm or on console (vt()) ~ 1 - 3 seconds and I receive very often "broken pipe" to ssh connections to a host nearby. I realized this strange behaviour on a couple of systems a maintain running most recent CURRENT. I also realize a high usage of swap on a 8GB RAM, 2 core box having two ZFS volumes (one 3TB HD and one 4 TB HAD with ZFS). Using Firefox on X11 (nVidia 364.12/355.11 driver, I checked on both) and running desktop only (windowmaker) brings the system toward using 12 or sometimes several hundreds of megabytes of swap - and I do not see what is using so much space. Does anyone also realize this phenomenon? Regards, oh