From owner-freebsd-stable@FreeBSD.ORG Sat Aug 30 20:00:22 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C74F91065673 for ; Sat, 30 Aug 2008 20:00:22 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from QMTA07.westchester.pa.mail.comcast.net (qmta07.westchester.pa.mail.comcast.net [76.96.62.64]) by mx1.freebsd.org (Postfix) with ESMTP id 72EB78FC13 for ; Sat, 30 Aug 2008 20:00:22 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from OMTA06.westchester.pa.mail.comcast.net ([76.96.62.51]) by QMTA07.westchester.pa.mail.comcast.net with comcast id 8jbw1a00916LCl057jkMrR; Sat, 30 Aug 2008 19:44:21 +0000 Received: from koitsu.dyndns.org ([67.180.253.227]) by OMTA06.westchester.pa.mail.comcast.net with comcast id 8jkL1a0084v8bD73SjkLrH; Sat, 30 Aug 2008 19:44:21 +0000 X-Authority-Analysis: v=1.0 c=1 a=1KYMIb6iin8A:10 a=WZmkggkQNUUA:10 a=QycZ5dHgAAAA:8 a=6I5d2MoRAAAA:8 a=NTPamqhE1B1OUbrMkd0A:9 a=A2yPd4Tlqduv5bCrce7rLlBfgaQA:4 a=EoioJ0NPDVgA:10 a=LY0hPdMaydYA:10 Received: by icarus.home.lan (Postfix, from userid 1000) id DBEF917B81A; Sat, 30 Aug 2008 12:44:19 -0700 (PDT) Date: Sat, 30 Aug 2008 12:44:19 -0700 From: Jeremy Chadwick To: Henri Hennebert Message-ID: <20080830194419.GA9882@icarus.home.lan> References: <200808281753.06379.jhb@freebsd.org> <48B99F64.1000603@restart.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48B99F64.1000603@restart.be> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: stable@freebsd.org, John Baldwin Subject: Re: Possible ZFS patch, please test! 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: Sat, 30 Aug 2008 20:00:22 -0000 On Sat, Aug 30, 2008 at 09:28:36PM +0200, Henri Hennebert wrote: > John Baldwin wrote: >> This patch merges a few changes from HEAD back to 7.x. I think the >> endian changes specifically might solve the issue people saw with >> zpools created with non-dtrace kernels not being readable by dtrace >> kernels and vice versa. >> >> http://www.FreeBSD.org/~jhb/patches/zfs_7.patch >> > Just a follow-up > > I cvsup at Sat Aug 30 12:55 without zfs_7.patch and > > make buildworld && make buildkernel && make installkernel > > reboot (-s) --root on zfs is ok -- make installworld > > reboot > > System is still sluggish even during the make installworld in single user. Sorry if I've missed this, but what tuning have you done for ZFS? Some of us (most of us?) have seen fairly "sluggish" performance when prefetch is enabled (the default), while the system is generally more responsive when prefetch is disabled. This may have nothing to do with the problem you've stated, but I thought I'd throw it out there. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |