From owner-freebsd-current@FreeBSD.ORG Sat May 30 16:23:11 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 828631065670 for ; Sat, 30 May 2009 16:23:11 +0000 (UTC) (envelope-from ohartman@mail.zedat.fu-berlin.de) Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) by mx1.freebsd.org (Postfix) with ESMTP id 3C4F08FC19 for ; Sat, 30 May 2009 16:23:11 +0000 (UTC) (envelope-from ohartman@mail.zedat.fu-berlin.de) Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost1.zedat.fu-berlin.de (Exim 4.69) with esmtp (envelope-from ) id <1MARKw-0008DV-Gr>; Sat, 30 May 2009 18:23:10 +0200 Received: from e178010121.adsl.alicedsl.de ([85.178.10.121] helo=thor.walstatt.dyndns.org) by inpost2.zedat.fu-berlin.de (Exim 4.69) with esmtpsa (envelope-from ) id <1MARKw-0005WY-EH>; Sat, 30 May 2009 18:23:10 +0200 Message-ID: <4A215D7F.7020807@mail.zedat.fu-berlin.de> Date: Sat, 30 May 2009 18:23:27 +0200 From: "O. Hartmann" User-Agent: Thunderbird 2.0.0.21 (X11/20090410) MIME-Version: 1.0 To: Attilio Rao References: <4A2120D5.50300@mail.zedat.fu-berlin.de> <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> In-Reply-To: <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Originating-IP: 85.178.10.121 X-Mailman-Approved-At: Sat, 30 May 2009 17:47:30 +0000 Cc: freebsd-current@freebsd.org Subject: Re: signifanctly slowdown of FreeBSD 8.0-CURRENT/amd64 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 May 2009 16:23:11 -0000 Attilio Rao wrote: > 2009/5/30 O. Hartmann : > >> Hello. >> I realized a significant slowdown of FreeBSD 8.0-CURRENT/amd64 on every >> box I run. I have the most recent FreeBSD 8.0-CURRENT/amd64 with custom >> kernel and switched off every debugging. I see a drastic slowdown >> whenever heavy I/O on UFS2 and ZFS partitions is performed and whenever >> some compilation is done (compiling world and kernel). This is horrible >> on a single core Athlon64 CPU with 2GB RAM as well as on a 4 core Q6600 >> with 8GB and a server with 2 x 4-cores and 16GB RAM. >> >> I can not say clearly whether I/O is the bottleneck. Maybe something >> with the memory subsystem, when it comes to compiler runs, when no disk >> I/O is done but the box is still horrible slow. This behaviour occured >> several weeks ago, not being able to specify it more precisely. >> >> AQre there any issues at the moment? >> > > Your kernel is compiled from which date? > > Thanks, > Attilio > > > Most recent, say: yesterday! As well as world.