From owner-freebsd-current@FreeBSD.ORG Wed Oct 26 16:16:36 2005 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F139D16A41F for ; Wed, 26 Oct 2005 16:16:36 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id AD38C43D45 for ; Wed, 26 Oct 2005 16:16:36 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 971981A3C19; Wed, 26 Oct 2005 09:16:36 -0700 (PDT) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id C72CF51213; Wed, 26 Oct 2005 12:16:35 -0400 (EDT) Date: Wed, 26 Oct 2005 12:16:35 -0400 From: Kris Kennaway To: Gleb Kozyrev Message-ID: <20051026161635.GB47405@xor.obsecurity.org> References: <20051025155930.GF93337@xor.obsecurity.org> <000a01c5d989$ba089a00$0130a8c0@Gleb> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="H+4ONPRPur6+Ovig" Content-Disposition: inline In-Reply-To: <000a01c5d989$ba089a00$0130a8c0@Gleb> User-Agent: Mutt/1.4.2.1i Cc: current@FreeBSD.org, Kris Kennaway Subject: Re: syncer going nuts on 6.0 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: Wed, 26 Oct 2005 16:16:37 -0000 --H+4ONPRPur6+Ovig Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 25, 2005 at 08:29:59PM +0300, Gleb Kozyrev wrote: > Kris Kennaway wrote to on Tue, 25 Oct 2005 11:59:33= -0400: >=20 > KK> I have 3 UP 6.0 machines that are currently stuck using 100-epsilon% > KK> of CPU in the syncer: >=20 > KK> last pid: 17621; load averages: 9.02, 7.21, 4.82 = =20 > KK> up 3+18:15:31 +08:49:50 > KK> 73 processes: 2 running, 47 sleeping, 24 waiting > KK> CPU states: 0.0% user, 0.0% nice, 100% system, 0.0% interrupt, 0= .0% idle > KK> Mem: 27M Active, 149M Inact, 137M Wired, 4K Cache, 109M Buf, 684M Free > KK> Swap: 2048M Total, 8K Used, 2048M Free > KK> PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMA= ND > KK> 38 root 1 -4 0 0K 8K getblk 180:21 431.30% sync= er > KK> 17474 root 1 -4 0 1928K 1428K getblk 1:13 28.71% rm > KK> 11 root 1 171 52 0K 8K RUN 20.2H 8.94% idle >=20 > KK> rm -rf is just removing a single ufs directory tree, but it's taking > KK> *much* longer than it should be (order of 5 minutes instead of 30 > KK> seconds it took for the other 25 machines), and the machine was > KK> extremely unresponsive in the meantime (response times of 30 seconds > KK> to run commands like top). WITNESS is on, but it's also on on the > KK> other 25 machines that aren't seeing a problem under what should be > KK> analogous loads. >=20 > I've seen the same problem and it seems to be related with filesystem sna= pshots. I'm not using them. Kris --H+4ONPRPur6+Ovig Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDX6vjWry0BWjoQKURAjhXAJ9qXQYVHJq3mWEl69fT4V4z5FujEwCg1eUp FDSTMUT4Cd6XcA1nnbNYDQ8= =P0Zl -----END PGP SIGNATURE----- --H+4ONPRPur6+Ovig--