From owner-freebsd-fs@FreeBSD.ORG Tue Aug 14 21:20:39 2007 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E15E216A419 for ; Tue, 14 Aug 2007 21:20:39 +0000 (UTC) (envelope-from freebsd-fs@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 6D42213C4A3 for ; Tue, 14 Aug 2007 21:20:39 +0000 (UTC) (envelope-from freebsd-fs@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1IL3oR-0006NZ-Eq for freebsd-fs@freebsd.org; Tue, 14 Aug 2007 23:20:27 +0200 Received: from 78-1-115-156.adsl.net.t-com.hr ([78.1.115.156]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 14 Aug 2007 23:20:27 +0200 Received: from ivoras by 78-1-115-156.adsl.net.t-com.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 14 Aug 2007 23:20:27 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-fs@freebsd.org From: Ivan Voras Date: Tue, 14 Aug 2007 23:20:07 +0200 Lines: 47 Message-ID: References: <186173.85039.qm@web63008.mail.re1.yahoo.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig8C3866F7E859A88A638A6E66" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 78-1-115-156.adsl.net.t-com.hr User-Agent: Thunderbird 1.5.0.12 (Windows/20070509) In-Reply-To: <186173.85039.qm@web63008.mail.re1.yahoo.com> X-Enigmail-Version: 0.94.3.0 Sender: news Subject: Re: help needed - tuning a filesystem for rm and cp ? (MORE) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Aug 2007 21:20:40 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig8C3866F7E859A88A638A6E66 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Gore Jarold wrote: > Ok, you are correct - I am indeed maxing out > vfs.ufs.dirhash_mem >=20 > I have just upped it by 2x and will continue to > monitor it. >=20 > Here is a question for any and all out there reading > ... what would you expect would happen to a system > that was constantly maxing out this value, sometimes > on a sustained basis, while the activity that caused > it went on uninterrupted ? A slowdown. Dirhash speeds up file access when the number of files is large (i.e. large directories). It's not required for proper function. > I am seeing the system halt ... is it reasonable to > think that maxing that value out on a regular, > sustained basis would cause a system to halt ? No, system halting or crashing points to a bug. If it's really halted ("freezed", no network or IO), someone should be able to lead you through a debugging session. --------------enig8C3866F7E859A88A638A6E66 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGwhyNldnAQVacBcgRAiC+AKCBF1bBIOTOpA/EinawfHHSSK7CrwCdHQaM X4HkGVnpq0y7d9ptmN9yWWM= =O8wr -----END PGP SIGNATURE----- --------------enig8C3866F7E859A88A638A6E66--