From owner-freebsd-current Tue Oct 29 21:46:22 2002 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 0F46C37B401 for ; Tue, 29 Oct 2002 21:46:21 -0800 (PST) Received: from odin.ac.hmc.edu (Odin.AC.HMC.Edu [134.173.32.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8825C43E6E for ; Tue, 29 Oct 2002 21:46:20 -0800 (PST) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (IDENT:brdavis@localhost.localdomain [127.0.0.1]) by odin.ac.hmc.edu (8.12.3/8.12.3) with ESMTP id g9U5kDs7000654 for ; Tue, 29 Oct 2002 21:46:13 -0800 Received: (from brdavis@localhost) by odin.ac.hmc.edu (8.12.3/8.12.3/Submit) id g9U5kDvt000653 for current@freebsd.org; Tue, 29 Oct 2002 21:46:13 -0800 Date: Tue, 29 Oct 2002 21:46:13 -0800 From: Brooks Davis To: current@freebsd.org Subject: system pauses after deleting large files Message-ID: <20021029214613.C30957@Odin.AC.HMC.Edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="4jXrM3lyYWu4nBt5" Content-Disposition: inline User-Agent: Mutt/1.2.5.1i X-Virus-Scanned: by amavisd-milter (http://amavis.org/) on odin.ac.hmc.edu Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG --4jXrM3lyYWu4nBt5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable While moving a large (1GB) file from one parition to another today, I noticed an odd, reproducable pause. Basicly you create a large file somewhere and then delete it like so: [9:32pm] brooks@minya (/var/tmp): dd if=3D/dev/zero of=3Dbigfile bs=3D1m co= unt=3D1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 92.343828 secs (11355128 bytes/sec) [9:34pm] brooks@minya (/var/tmp): rm bigfile Within the next minute or so, I see a pause where the whole system stops for 5-10 seconds. There is a burst of disk activity accompanying this. It's easiest to observe this in X with some active dock apps or monitors running so you'll see them stop updating. Is this something that cane be fixed or is it just life with softupdates? I ask in part because I'm considering a new backup architecture which will generate files in the range of several 100GB so I'd hate to find out this hang is going to be proporational to file size. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --4jXrM3lyYWu4nBt5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE9v3IkXY6L6fI4GtQRApgBAJ0bqSw5BgnQ7ILfL94kYaBZPTofgwCfe33j 2jQbtZK0KW8RMuP+I+Ce2UA= =CK3j -----END PGP SIGNATURE----- --4jXrM3lyYWu4nBt5-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message