From owner-freebsd-hackers@FreeBSD.ORG Wed Sep 24 10:23:41 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0675A1065680 for ; Wed, 24 Sep 2008 10:23:41 +0000 (UTC) (envelope-from freebsd-hackers@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id B475D8FC22 for ; Wed, 24 Sep 2008 10:23:40 +0000 (UTC) (envelope-from freebsd-hackers@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KiRX2-0006Om-98 for freebsd-hackers@freebsd.org; Wed, 24 Sep 2008 10:23:40 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 24 Sep 2008 10:23:40 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 24 Sep 2008 10:23:40 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-hackers@freebsd.org From: Ivan Voras Date: Wed, 24 Sep 2008 12:23:33 +0200 Lines: 38 Message-ID: References: <8185F68B-C443-4891-BEC2-5E3D453DDC93@wheelhouse.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigE17F28EA7E3A58CAFF658852" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.16 (X11/20080724) In-Reply-To: X-Enigmail-Version: 0.95.0 Sender: news Subject: Re: Major SMP problems with lstat/namei X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Sep 2008 10:23:41 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigE17F28EA7E3A58CAFF658852 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Ivan Voras wrote: > There is nothing that can be done within the 6.x branch. 7.x contains > many improvements but I think only 8.x will directly change the lockmgr= > and the namei cache. The best things you can try right now is to use > 7-STABLE (or soon to be released 7.1; you might need tuning with > 7.0-RELEASE) or try 8-CURRENT (it's quite stable). I remembered two more things: * The problematic load can also be generated with benchmarks/blogbench * I don't have the numbers here but I think I remember that ZFS had noticably larger score than UFS in this workload. Of course, ZFS has other problems. --------------enigE17F28EA7E3A58CAFF658852 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFI2hUlldnAQVacBcgRAsR2AKCXVfj2YxaX0t2y9UOv+nEx0z5PWACgnDE+ rzauJyAc70nIG5r9c2iA3yw= =cmxt -----END PGP SIGNATURE----- --------------enigE17F28EA7E3A58CAFF658852--