From owner-freebsd-hackers@FreeBSD.ORG Fri May 1 12:05:29 2009 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 674221065670 for ; Fri, 1 May 2009 12:05:29 +0000 (UTC) (envelope-from kabaev@gmail.com) Received: from qw-out-2122.google.com (qw-out-2122.google.com [74.125.92.25]) by mx1.freebsd.org (Postfix) with ESMTP id 177818FC0A for ; Fri, 1 May 2009 12:05:28 +0000 (UTC) (envelope-from kabaev@gmail.com) Received: by qw-out-2122.google.com with SMTP id 3so1791485qwe.7 for ; Fri, 01 May 2009 05:05:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:cc:subject :message-id:in-reply-to:references:x-mailer:mime-version :content-type; bh=kTTAtd1eOjb2QoZiXm4eGrAPAYrvoLkc20mSI/I7uM4=; b=A26SfCf6/kGtp+0kxT5xkqmfucLoIx7f91j0pOwxHIQLF9BdNCvOiP6cR78gbH/u6l cbJPA41z6CD/lXQmmHhdI3lNVIqOVwyOMxbTzUW7Ftl3v76t7TbRXZRPE4oVtdM6BQbF BrOQGNQrfyAN8i2yXft9UHN6hFZtDScq4sjL0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type; b=JI9xOnES1tblmtZ1l1rchIFBrGZ6WiIUwKYw49BFAN+ENUyiAdEUWKN8pqHBi4/v+h kxRJlQy3ijhDEvIBolm6J4HLXmw0AWRHd+d8I0EiCkNJl/Dum6HhQey1ogILRWdB9OaQ jbqE1TcoyNdnY43dzBjfNqMR2gvuA2wEhChLM= Received: by 10.224.28.73 with SMTP id l9mr2929029qac.288.1241177554170; Fri, 01 May 2009 04:32:34 -0700 (PDT) Received: from kan.dnsalias.net (c-98-217-224-113.hsd1.ma.comcast.net [98.217.224.113]) by mx.google.com with ESMTPS id 5sm6122853qwh.4.2009.05.01.04.32.32 (version=SSLv3 cipher=RC4-MD5); Fri, 01 May 2009 04:32:33 -0700 (PDT) Date: Fri, 1 May 2009 07:32:24 -0400 From: Alexander Kabaev To: freebsd-hackers@freebsd.org Message-ID: <20090501073224.518cb833@kan.dnsalias.net> In-Reply-To: References: <6101e8c40904300750i3e86fc0cnef09b0d4533627f7@mail.gmail.com> X-Mailer: Claws Mail 3.7.1 (GTK+ 2.16.1; i386-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/u949MyjUD1ePg/KG9l0_9.y"; protocol="application/pgp-signature" Cc: Oliver Pinter Subject: Re: NetBSD 5.0 statistics 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: Fri, 01 May 2009 12:05:29 -0000 --Sig_/u949MyjUD1ePg/KG9l0_9.y Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 30 Apr 2009 20:32:00 +0100 (BST) Robert Watson wrote: >=20 > On Thu, 30 Apr 2009, Oliver Pinter wrote: >=20 > > Is the FreeBSD's FS management so slow? > > > > http://www.netbsd.org/~ad/50/img15.html > > > > Or so big is the difference between the two cpu scheduler? >=20 > Also, there's a known and serious performance regression in CAM > relating to tgged queueing, and the generic disk sort routine, > introduced 7.1, which will be fixed in 7.2. I can't speak more > generally to the benchmarks -- we'll need to run them in a controlled > environment and see if we can reproduce the results. >=20 Well, there is also r185801 of vfs_cache.c which all but destroys the usefulness of negative name caching and surely can account for a large percentage of reported performance drop in 7.1, especially with build.sh benchmarks. The bug was fixed in stable/7 soon after 7.1 was released. --=20 Alexander Kabaev --Sig_/u949MyjUD1ePg/KG9l0_9.y Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) iD8DBQFJ+t3OQ6z1jMm+XZYRAsb+AKCU/Jz50i6qngEIcp7u8A0T7hx3qQCfY2L2 WX6gF+bByq/xY20Xpapu4Os= =4YwD -----END PGP SIGNATURE----- --Sig_/u949MyjUD1ePg/KG9l0_9.y--