From owner-svn-src-all@freebsd.org Wed Dec 20 18:55:24 2017 Return-Path: Delivered-To: svn-src-all@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 5D0E4E9CC3D; Wed, 20 Dec 2017 18:55:24 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vps.rulingia.com (vps.rulingia.com [103.243.244.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.rulingia.com", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id ECBCF7BCB7; Wed, 20 Dec 2017 18:55:23 +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 vps.rulingia.com (8.15.2/8.15.2) with ESMTPS id vBKIt86j093691 (version=TLSv1.2 cipher=DHE-RSA-CHACHA20-POLY1305 bits=256 verify=OK); Thu, 21 Dec 2017 05:55:14 +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 vBKIt25O013312 (version=TLSv1.2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256 verify=NO); Thu, 21 Dec 2017 05:55:02 +1100 (AEDT) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.15.2/8.15.2/Submit) id vBKIt2n5013311; Thu, 21 Dec 2017 05:55:02 +1100 (AEDT) (envelope-from peter) Date: Thu, 21 Dec 2017 05:55:02 +1100 From: Peter Jeremy To: Andriy Gapon Cc: Baptiste Daroussin , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: Re: svn commit: r326619 - stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <20171220185502.GA5042@server.rulingia.com> References: <201712061001.vB6A12Ot032201@repo.freebsd.org> <20171213185214.GA12026@server.rulingia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ikeVEW9yuYc//A+q" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.9.1 (2017-09-22) X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Dec 2017 18:55:24 -0000 --ikeVEW9yuYc//A+q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2017-Dec-19 14:50:57 +0200, Andriy Gapon wrote: >On 13/12/2017 20:52, Peter Jeremy wrote: >> This change appears to break the backpressure mechanism that forces >> ARC to release wired memory. Running FreeBSD/amd64 r326743, I found =2E.. >could you please try to monitor 'arc-needfree' DTrace probe during periods= when >you are trying to put a pressure on the memory? >The probe's argument (signed) tells the ARC's idea of the memory availabil= ity / >shortage. I will see if I can reproduce the issue in a VBox to remove the need to revert my reversion. Give me a couple of days. --=20 Peter Jeremy --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJaOrIGXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFRUIyOTg2QzMwNjcxRTc0RTY1QzIyN0Ux NkE1OTdBMEU0QTIwQjM0AAoJEBall6Dkogs05a0P/j1nZBNy8hkIlIxNi1DMhQYQ Y4sxX1dMHEi7gdjsO9Ex8qMic9dmeYISmlR7Rqu5G5nzntUWS12CID0AVq5OpvL9 u6SZT1h/HLt/T8E17801t/CReuJ5IbdyGkI9BrTJDNxdl2pQ4mmw0tmpiQ7CsStN YNfTPsNgGkqd8YaHJE4u6fXmWEtomFz7GNM1nYO7MtIp4Dml/f84esIewoJ53qjx l8deMUOU3Ilz9t/I1pxP7q5dwBalbU3bkhVeyo/9bSBrWCEtUrZQjSLrAnSnqtXj A8hozEUx7NhB1bRBIuhR/69B9WngIrth76oU05mOXw4uUMZv1CdU6Gw+k/DdJPht 994zOmZEJCz3JIw6BUaq6v+ceE7vBuq8upTlAMkaXByAqw4l/roxjXUDXRndXRjJ wHW4cXlkl6+cUcVHfQNm7hCqGmgLZVBSen67W0oKTzbKYTul5vICJErg5/4gKHmW feiNeGfZXdwxNmZG/UifM8HerX0M7/gTmUQejYPXGVKCATir0HcT6qEtrYukrxsU /7snCdAFTXr6lR1QMgG+BQfkYnRvyCeLFUBmpEr3yrL1FlgEl3YiIIfchDnEFUzc yfDRKIPlN/LRO9oHXksjtYd3hJJ2VqYV+szBj+wNa03/zYinbhP3lC9jnO6TZk+Z srFZuhjirS0rRnM7u0FM =a9aN -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--