From owner-freebsd-performance@FreeBSD.ORG Wed Sep 9 17:02:15 2009 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D1221106568F; Wed, 9 Sep 2009 17:02:15 +0000 (UTC) (envelope-from cliftonr@lava.net) Received: from outgoing01.lava.net (cake.lava.net [IPv6:2001:1888:0:1:230:48ff:fe5b:3b50]) by mx1.freebsd.org (Postfix) with ESMTP id 88A768FC1C; Wed, 9 Sep 2009 17:02:15 +0000 (UTC) Received: from malasada.lava.net (malasada.lava.net [64.65.64.17]) by outgoing01.lava.net (Postfix) with ESMTP id C2C84D0510; Wed, 9 Sep 2009 07:02:14 -1000 (HST) Received: by malasada.lava.net (Postfix, from userid 102) id 0942F153882; Wed, 9 Sep 2009 07:02:13 -1000 (HST) Date: Wed, 9 Sep 2009 07:02:13 -1000 From: Clifton Royston To: Tobias Lott Message-ID: <20090909170213.GA7925@lava.net> Mail-Followup-To: Tobias Lott , freebsd-stable@freebsd.org, freebsd-performance@freebsd.org References: <20090908121945.43ba3976@sub.han.vpn.gamesnet.de> <20090909104807.633418ea@sub.han.vpn.gamesnet.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090909104807.633418ea@sub.han.vpn.gamesnet.de> User-Agent: Mutt/1.4.2.2i X-Mailman-Approved-At: Wed, 09 Sep 2009 17:38:27 +0000 Cc: freebsd-performance@freebsd.org, freebsd-stable@freebsd.org Subject: Re: System crawls after Upgrade 7.0->7.2 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2009 17:02:15 -0000 On Wed, Sep 09, 2009 at 10:48:07AM +0200, Tobias Lott wrote: > On Tue, 8 Sep 2009 12:19:45 +0200 > Tobias Lott wrote: > > Hey Everyone, > > > > I upgraded a Dual Core Machine to 7.2-Stable (2 Days ago), all OS > > related Stuff is located on an UFS Slice, Application is on a ZFS > > Volume. > > > > After the Upgrade everything seemed fine, but a User noticed one PHP > > Script which is basically loading a plain Textfile into Mysql times > > out. PHP Timeout was set to 60 secs, that was more then enough just > > one day before the upgrade. ... > > Since I upgraded the Machines zpool to version 13 already I don't > > really wanna go back to 7.0, but it seems the only way out atm. > > > > Hopefully someone can give me a Hint where maybe I forgot to check. > > > > Somehow it feels like the last Versions, I'd say starting with 7.x > > doesn't really feel that Rock-Stable as Versions Prior used to > > be. Prolly cause I'm using an Experimental Feature like ZFS, so no > > Offense nor Blame and this is not intended as a Flame or whatsoever! > > So don't get me wrong, I always liked, used, recommended FreeBSD since > > 4.0 and will continue to do so! > > > > Best Regards > > > > I've tested some more it seems the Bottleneck is the HD, Raid Array is > Optimal checked it. Probably you already checked this, but did you go through the dmesg output relating to ata and drive detection closely? In the past from time to time I've had machines suddenly start crawling after an upgrade, and it turned out it was because some change in the driver detection caused the ata to fall back to pio mode. The symptoms are pretty much like you describe - all HD IO takes forever. -- Clifton -- Clifton Royston -- cliftonr@iandicomputing.com / cliftonr@lava.net President - I and I Computing * http://www.iandicomputing.com/ Custom programming, network design, systems and network consulting services