From owner-freebsd-current@FreeBSD.ORG Sun Sep 26 12:42:38 2004 Return-Path: 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 1A92E16A4CF for ; Sun, 26 Sep 2004 12:42:38 +0000 (GMT) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 18F1743D3F for ; Sun, 26 Sep 2004 12:42:35 +0000 (GMT) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.gsoft.com.au (localhost [127.0.0.1]) (authenticated bits=0) by cain.gsoft.com.au (8.12.11/8.12.10) with ESMTP id i8QCgU1N008835; Sun, 26 Sep 2004 22:12:31 +0930 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: Ryan Freeman Date: Sun, 26 Sep 2004 22:12:18 +0930 User-Agent: KMail/1.7 References: <20040926025317.GA5812@slipgate.org> <200409261342.34874.doconnor@gsoft.com.au> <20040926114623.GA7990@slipgate.org> In-Reply-To: <20040926114623.GA7990@slipgate.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart15888128.N0Mt3PlvMr"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200409262212.26882.doconnor@gsoft.com.au> X-Spam-Score: -2.5 () IN_REP_TO,PGP_SIGNATURE_2,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01,USER_AGENT X-Scanned-By: MIMEDefang 2.16 (www . roaringpenguin . com / mimedefang) cc: FreeBSD Mailing List Subject: Re: Sound performance problems in FreeBSD X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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, 26 Sep 2004 12:42:38 -0000 --nextPart15888128.N0Mt3PlvMr Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Sun, 26 Sep 2004 21:16, Ryan Freeman wrote: > > I suspect that sysctl involves doing lots of locking and will do weird > > things.. > > Does it happen if you run a CPU using userland proc inseadt? > > The problem is, it isn't just that sysctl command that does it. I find th= at > even running gkrellm makes the ticking worse. if i close gkrellm, it I'd say gkrellm probably pokes at various sysctl's to gather stats so it ma= y=20 be a related problem. > reduces the ticks/sound stretches. that sysctl was just an easy way to ma= ke > the problem _really_ stand out it seems. iirc when i was using 5.2.1 i > found that just disabling the proc chart in gkrellm seemed to help a lot. > haven't bothered to try it now. Does a purely CPU bound process cause the problem? ie try something like.. dd if=3D/dev/zero | md5 =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart15888128.N0Mt3PlvMr Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBVrky5ZPcIHs/zowRAn73AKCIksWaLIF1JjUTwolaVRJoabf2CgCgjJVE nLmiCUGP8ojUKgh29XHm9AM= =XaXP -----END PGP SIGNATURE----- --nextPart15888128.N0Mt3PlvMr--