From owner-freebsd-current@freebsd.org Tue Mar 20 07:08:09 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9C0CBF5829F for ; Tue, 20 Mar 2018 07:08:09 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vtr.rulingia.com (vtr.rulingia.com [IPv6:2001:19f0:5801:ebe:5400:1ff:fe53:30fd]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "vtr.rulingia.com", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id D13AD835EC for ; Tue, 20 Mar 2018 07:08:08 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from server.rulingia.com (ppp59-167-167-3.static.internode.on.net [59.167.167.3]) by vtr.rulingia.com (8.15.2/8.15.2) with ESMTPS id w2K77slj027190 (version=TLSv1.2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256 verify=OK); Tue, 20 Mar 2018 18:08:03 +1100 (AEDT) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.15.2/8.15.2) with ESMTPS id w2K77jsD012891 (version=TLSv1.2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256 verify=NO); Tue, 20 Mar 2018 18:07:46 +1100 (AEDT) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.15.2/8.15.2/Submit) id w2K77jRo012890; Tue, 20 Mar 2018 18:07:45 +1100 (AEDT) (envelope-from peter) Date: Tue, 20 Mar 2018 18:07:45 +1100 From: Peter Jeremy To: Jeff Roberson Cc: FreeBSD current Subject: Re: Strange ARC/Swap/CPU on yesterday's -CURRENT Message-ID: <20180320070745.GA12880@server.rulingia.com> References: <20180306173455.oacyqlbib4sbafqd@ler-imac.lerctr.org> <201803061816.w26IGaW5050053@pdx.rh.CN85.dnsmgr.net> <20180306193645.vv3ogqrhauivf2tr@ler-imac.lerctr.org> <20180306221554.uyshbzbboai62rdf@dx240.localdomain> <20180307103911.GA72239@kloomba> <20180311004737.3441dbf9@thor.intern.walstatt.dynvpn.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=x-unknown; protocol="application/pgp-signature"; boundary="jI8keyz6grp/JLjh" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.9.4 (2018-02-28) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 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: Tue, 20 Mar 2018 07:08:09 -0000 --jI8keyz6grp/JLjh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2018-Mar-11 10:43:58 -1000, Jeff Roberson wrot= e: >Also, if you could try going back to r328953 or r326346 and let me know if= =20 >the problem exists in either. That would be very helpful. If anyone is= =20 >willing to debug this with me contact me directly and I will send some=20 >test patches or debugging info after you have done the above steps. I ran into this on 11-stable and tracked it to r326619 (MFC of r325851). I initially got around the problem by reverting that commit but either it or something very similar is still present in 11-stable r331053. I've seen it in my main server (32GB RAM) but haven't managed to reproduce it in smaller VBox guests - one difficulty I faced was artificially filling ARC. --=20 Peter Jeremy --jI8keyz6grp/JLjh Content-Type: application/pgp-signature; name="signature.asc" /usr/local/bin/gpg --no-verbose --batch --output - --passphrase-fd 0 --pinentry-mode loopback --armor --detach-sign --textmode -u 0x1D9214A2699F8CB2 /tmp/mutt-server-acr62wLd --jI8keyz6grp/JLjh--