From owner-freebsd-questions@FreeBSD.ORG Sun Jan 21 07:29:26 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 98FC016A400 for ; Sun, 21 Jan 2007 07:29:26 +0000 (UTC) (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 8643D13C441 for ; Sun, 21 Jan 2007 07:29:26 +0000 (UTC) (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 6A37D1A4D82; Sat, 20 Jan 2007 23:29:26 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 93BA6512E1; Sun, 21 Jan 2007 02:29:22 -0500 (EST) Date: Sun, 21 Jan 2007 02:29:22 -0500 From: Kris Kennaway To: Rich Winkel Message-ID: <20070121072922.GA16776@xor.obsecurity.org> References: <200701210156.l0L1u8JA050864@pencil.math.missouri.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="SUOF0GtieIMvvwua" Content-Disposition: inline In-Reply-To: <200701210156.l0L1u8JA050864@pencil.math.missouri.edu> User-Agent: Mutt/1.4.2.2i Cc: freebsd-questions@freebsd.org Subject: Re: Mail server intermittent freeze X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Jan 2007 07:29:26 -0000 --SUOF0GtieIMvvwua Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 20, 2007 at 07:56:08PM -0600, Rich Winkel wrote: > I'm pulling out what's left of my hair trying to figure out this one. > It's not a pretty sight. Save the people who have to look at me! >=20 > It's a 1ghz intel P3 with 512MB ram, running 4.11-p26 with sendmail, > imapd-uw, qpopper, stunnel-4.14_2 and p5-Mail-SpamAssassin-3.1.1, as > well as tty logins. > It's an nis and nfs client (nfs=3Dhome dirs). It has an fxp network card > which is in polling mode (although the problem started before it was put > in polling mode) >=20 > The system will freeze maybe every 5 minutes, sometimes for up to > a minute. Almost completely: low level terminal io on the console > still works. I can switch tty's (ALT-Fn) and carriage returns > are echoed (and discarded) while showing "netstat -w 1" output. > But interactive prompts are frozen. No user-level processing is > apparent. Network traffic is heavy, we're getting massive amounts > of spam, and spamd's load on the system has jumped considerably > in the past few weeks. Average system load used to hover around .8, > now it averages over 2, mostly due to spamd. Usually this is because a transient load is causing it to swap. 512MB isn't really a lot of RAM on a heavily loaded server. Kris --SUOF0GtieIMvvwua Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFsxZRWry0BWjoQKURAl1/AKD6ci/at8BGUwSVQBBcN7tCUd5LvQCZAdxQ 887wMIoFj/oU98evdt9HXmE= =7+pQ -----END PGP SIGNATURE----- --SUOF0GtieIMvvwua--