From owner-freebsd-current@FreeBSD.ORG Sun Sep 9 07:56:30 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D21F916A46C for ; Sun, 9 Sep 2007 07:56:30 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.freebsd.org (Postfix) with ESMTP id 7C7E313C45B for ; Sun, 9 Sep 2007 07:56:30 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id DF19245E97; Sun, 9 Sep 2007 09:56:27 +0200 (CEST) Received: from localhost (cvl74.internetdsl.tpnet.pl [83.19.93.74]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 028A945685; Sun, 9 Sep 2007 09:56:16 +0200 (CEST) Date: Sun, 9 Sep 2007 09:54:42 +0200 From: Pawel Jakub Dawidek To: Peter Schuller Message-ID: <20070909075442.GB2341@garage.freebsd.pl> References: <200709081717.05006.peter.schuller@infidyne.com> <20070908170810.GA90578@hyperion.scode.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="WYTEVAkct0FjGQmd" Content-Disposition: inline In-Reply-To: <20070908170810.GA90578@hyperion.scode.org> User-Agent: Mutt/1.4.2.3i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=BAYES_00,RCVD_IN_NJABL_DUL, RCVD_IN_SORBS_WEB autolearn=no version=3.0.4 Cc: freebsd-current@freebsd.org Subject: Re: Swapping on ZFS - stability issue X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Sun, 09 Sep 2007 07:56:30 -0000 --WYTEVAkct0FjGQmd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Sep 08, 2007 at 07:08:10PM +0200, Peter Schuller wrote: > > I'll see if I can confirm behavior on a more recent CURRENT. The above = was on=20 > > CURRENT:s from 1-2 months ago in both cases. >=20 > Confirmed on CURRENT cvsup:ed today (2007-09-08). However, the speed > at which swap was filling was much faster - on par with swap on > non-ZFS. But the machine still effectively froze, save the > console/ping, after a few seconds. >=20 > Also, I forgot to say this is all on amd64 machines. This is a known issue also in OpenSolaris. ZFS needs to allocate memory to send I/O request, and when there is no memory, it can't allocate it thus can't swap a process out and free it. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --WYTEVAkct0FjGQmd Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFG46bCForvXbEpPzQRArw3AJwNW4IDZasvMoFpime3i/twa0yH7wCg7sHO 1xR8gnDVZluYTSxMDPy1JuI= =UAGK -----END PGP SIGNATURE----- --WYTEVAkct0FjGQmd--