From owner-freebsd-fs@FreeBSD.ORG Sun Jul 3 15:27:16 2005 Return-Path: X-Original-To: fs@freebsd.org Delivered-To: freebsd-fs@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 12DF616A41C for ; Sun, 3 Jul 2005 15:27:16 +0000 (GMT) (envelope-from skylar@cs.earlham.edu) Received: from quark.cs.earlham.edu (cs.earlham.edu [159.28.230.3]) by mx1.FreeBSD.org (Postfix) with ESMTP id D44B643D46 for ; Sun, 3 Jul 2005 15:27:13 +0000 (GMT) (envelope-from skylar@cs.earlham.edu) Received: from quark.cs.earlham.edu (localhost [127.0.0.1]) by quark.cs.earlham.edu (8.13.4/8.13.3) with ESMTP id j63FR8O0061764 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 3 Jul 2005 10:27:08 -0500 (EST) (envelope-from skylar@cs.earlham.edu) Received: (from skylar@localhost) by quark.cs.earlham.edu (8.13.4/8.13.3/Submit) id j63FR8w9061763; Sun, 3 Jul 2005 10:27:08 -0500 (EST) (envelope-from skylar@cs.earlham.edu) X-Authentication-Warning: quark.cs.earlham.edu: skylar set sender to skylar@quark.cs.earlham.edu using -f Date: Sun, 3 Jul 2005 10:27:08 -0500 From: Skylar Thompson To: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= Message-ID: <20050703152708.GB61611@quark.cs.earlham.edu> References: <20050626182031.GA5268@quark.cs.earlham.edu> <20050701130315.C52686@duey.wolves.k12.mo.us> <42C6C873.8050808@cs.earlham.edu> <86k6k8yxf2.fsf@xps.des.no> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NMuMz9nt05w80d4+" Content-Disposition: inline In-Reply-To: <86k6k8yxf2.fsf@xps.des.no> User-Agent: Mutt/1.4.2.1i X-Sender: "Skylar Thompson" X-Accept-Primary-Language: en X-Accept-Secondary-Language: es SMTP-Mailing-Host: quark.cs.earlham.edu X-Operating-System: FreeBSD 5.4-RELEASE-p1 X-Uptime: 10:22AM up 6 days, 15:09, 13 users, load averages: 0.07, 0.10, 0.12 X-Editor: VIM - Vi IMproved 6.3 (2004 June 7, compiled May 14 2005 15:15:17) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (quark.cs.earlham.edu [127.0.0.1]); Sun, 03 Jul 2005 10:27:09 -0500 (EST) X-Virus-Scanned: ClamAV 0.86.1/964/Sat Jul 2 17:49:11 2005 on quark.cs.earlham.edu X-Virus-Status: Clean X-Sanitizer: This message has passed the MIMEDefang sanitizer. X-Sanitizer-URL: http://www.cs.earlham.edu/applied-groups/admin/ X-Sanitizer-Version: MIMEDefang/ECSanitizer $Revision: 1.18 $ X-Sanitizer-Config-Version: $Revision: 1.180 $ X-Scanned-By: MIMEDefang 2.51 on 192.168.0.3 X-Spam-Status: No, score=-2.8 required=8.0 tests=ALL_TRUSTED autolearn=failed version=3.0.4 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on quark.cs.earlham.edu Cc: fs@freebsd.org Subject: Re: Snapshot problems X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Skylar Thompson List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Jul 2005 15:27:16 -0000 --NMuMz9nt05w80d4+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jul 03, 2005 at 12:52:01PM +0200, Dag-Erling Smrgrav wrote: > Skylar Thompson writes: > > No joy. The machine hung again yesterday afternoon, with the error > > "kern.ipc.maxpipekva exceeded" repeated over and over again on the > > console. >=20 > So you're using a lot of pipes - more than the kernel can handle with > the default parameters. What's your workload? Do you run a lot of > jails? What is the current value of kern.ipc.maxpipekva? Have you > tried increasing it? That's the weird thing. My workload is pretty typical. This is basically being used as a main departmental server, doing web/mail/database/print services. I don't think these services involve using a lot of pipes. I also can't correlate the crashes with heavy service load; it's always correlated with heavy disk I/O. That said, upping kern.ipc.maxpipekva might be on the right track. The machine lasted through both the database dumps and the filesystem dumps last night. --=20 -- Skylar Thompson (skylar@cs.earlham.edu) -- http://www.cs.earlham.edu/~skylar/ --NMuMz9nt05w80d4+ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCyAPLsc4yyULgN4YRAt0LAKCQ9BGDwwBu6MCiWNS0Amj5VpD9XQCgo6Vi PBa1+JMcnYwpPNQ0+gEXZWY= =yPWE -----END PGP SIGNATURE----- --NMuMz9nt05w80d4+--