From owner-freebsd-stable@FreeBSD.ORG Tue May 24 16:19:47 2005 Return-Path: X-Original-To: freebsd-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 93AAD16A41C for ; Tue, 24 May 2005 16:19:47 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com [69.194.102.232]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4B45943D53 for ; Tue, 24 May 2005 16:19:47 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 1E535513C0; Tue, 24 May 2005 09:20:35 -0700 (PDT) Date: Tue, 24 May 2005 09:20:35 -0700 From: Kris Kennaway To: Krzysztof Kowalik Message-ID: <20050524162034.GA59728@xor.obsecurity.org> References: <3248.172.16.0.199.1116876092.squirrel@172.16.0.1> <20050523195123.GA13810@xor.obsecurity.org> <3482.172.16.0.199.1116882013.squirrel@172.16.0.1> <20050523211307.GA36552@xor.obsecurity.org> <42924949.1070902@incubus.de> <20050523213155.GA46718@xor.obsecurity.org> <20050524143726.GA29642@uci.agh.edu.pl> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="yrj/dFKFPuw6o+aM" Content-Disposition: inline In-Reply-To: <20050524143726.GA29642@uci.agh.edu.pl> User-Agent: Mutt/1.4.2.1i Cc: freebsd-stable@freebsd.org, Kris Kennaway Subject: Re: Performance of 4.x vs 5.x (Re: Lifetime of FreeBSD branches) 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: Tue, 24 May 2005 16:19:47 -0000 --yrj/dFKFPuw6o+aM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 24, 2005 at 04:37:26PM +0200, Krzysztof Kowalik wrote: > Kris Kennaway [kris@obsecurity.org] wrote: > > [...] One obvious guess is that it's due to VFS being under Giant, > > which causes lots of contention with other subsystems that also > > require Giant, and therefore introduces latency. If so, you'd see a > > substantial performance improvement on 6.0 with debug.mpsafevfs=3D1. >=20 > I didn't see any visible difference, in the given scenario of > uncompressing firefox's sources, when tried mpsafevfs's patches when > they got announced on current@. There have been a *lot* of changes in this area since the initial patches (i.e. continued removal of Giant), so you'd really need to re-test on a recent version of 6.0 to be definitive. Kris --yrj/dFKFPuw6o+aM Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCk1RSWry0BWjoQKURAsz8AKCTTpQ+UwZTWNT2u97SqnVI2jFIiwCgkJKz vmDl/iHG06pZ49+m4Bt+fgc= =eIKH -----END PGP SIGNATURE----- --yrj/dFKFPuw6o+aM--