From owner-freebsd-stable@FreeBSD.ORG Sun Jan 22 22:25:34 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AEC4E16A41F for ; Sun, 22 Jan 2006 22:25:34 +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 71C8C43D45 for ; Sun, 22 Jan 2006 22:25:34 +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 46ECE1A3C1C; Sun, 22 Jan 2006 14:25:34 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 336FB51243; Sun, 22 Jan 2006 17:25:33 -0500 (EST) Date: Sun, 22 Jan 2006 17:25:33 -0500 From: Kris Kennaway To: Tobias Roth Message-ID: <20060122222532.GA62073@xor.obsecurity.org> References: <20060122220028.GB1379@droopy.unibe.ch> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="pWyiEgJYm5f9v55/" Content-Disposition: inline In-Reply-To: <20060122220028.GB1379@droopy.unibe.ch> User-Agent: Mutt/1.4.2.1i Cc: stable@freebsd.org Subject: Re: system laggy under load, SCHED_BSD X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Jan 2006 22:25:34 -0000 --pWyiEgJYm5f9v55/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jan 22, 2006 at 11:00:28PM +0100, Tobias Roth wrote: > Hi >=20 > Since some time, I experience extremely bad system behaviour under > load. For instance when compiling something, or unpacking a large > archive, the system is almost unusable, even the mouse pointer > reacts sloppy. >=20 > My system: >=20 > 6.0-STABLE FreeBSD 6.0-STABLE #7: Sun Jan 22 15:53:39 CET 2006 i386 >=20 > I use SCHED_BSD. >=20 > How can I diagnose the problem, or provide more information? What > factors might influence what I experience? I cannot give a more precise > point in time as when this started, since I switched versions and > systems a few times recently. This has been discussed a number of times: the short answer is to look for interrupt storms (vmstat -i), interrupt sharing (also vmstat -i), and in particular shared interrupts involving usb or other drivers still under Giant. Kris --pWyiEgJYm5f9v55/ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFD1AZcWry0BWjoQKURAhr1AJ9sUAyRHR3zRQRJjveahQwBetICiACgj3xE jBxwoUK2KDbpfJ6AdCMBhsc= =eTT4 -----END PGP SIGNATURE----- --pWyiEgJYm5f9v55/--