From owner-freebsd-current@FreeBSD.ORG Mon Jun 1 08:13:08 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 68FA6106566B; Mon, 1 Jun 2009 08:13:08 +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 E7B8F8FC20; Mon, 1 Jun 2009 08:13:07 +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 <1MB2dm-00023H-Vk>; Mon, 01 Jun 2009 10:13:07 +0200 Received: from e178015162.adsl.alicedsl.de ([85.178.15.162] helo=thor.walstatt.dyndns.org) by inpost2.zedat.fu-berlin.de (Exim 4.69) with esmtpsa (envelope-from ) id <1MB2dm-0002CZ-Sx>; Mon, 01 Jun 2009 10:13:06 +0200 Message-ID: <4A238D95.9020209@mail.zedat.fu-berlin.de> Date: Mon, 01 Jun 2009 10:13:09 +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> <4A215D7F.7020807@mail.zedat.fu-berlin.de> <3bbf2fe10905300944r96ae931re4475c78d9be3aa8@mail.gmail.com> <3bbf2fe10905300951o3beea201j72b6e6b96f85c05a@mail.gmail.com> In-Reply-To: <3bbf2fe10905300951o3beea201j72b6e6b96f85c05a@mail.gmail.com> X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Originating-IP: 85.178.15.162 X-Mailman-Approved-At: Mon, 01 Jun 2009 11:23:23 +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: Mon, 01 Jun 2009 08:13:08 -0000 Attilio Rao wrote: > 2009/5/30 Attilio Rao : > >> 2009/5/30 O. Hartmann : >> >>> 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. >>> >> Can you try to revert only r193011 and see if something changes? >> > > Also, did you compile the single-core athlon64 without the option SMP? > > Thanks, > Attilio > > > Yes, I did of course compile kernel on UP without option SMP and of those with more than on logical core with SMP on. I will try to revert to r193011. Oliver