From owner-freebsd-stable@FreeBSD.ORG Mon Sep 1 07:39:06 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 0E176106566B for ; Mon, 1 Sep 2008 07:39:06 +0000 (UTC) (envelope-from hlh@restart.be) Received: from tignes.restart.be (tignes.restart.be [213.251.163.210]) by mx1.freebsd.org (Postfix) with ESMTP id B880D8FC50 for ; Mon, 1 Sep 2008 07:39:05 +0000 (UTC) (envelope-from hlh@restart.be) Received: from restart.be (avoriaz.tunnel.bel [IPv6:2001:41d0:1:2ad2:1:ffff::]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "avoriaz.restart.be", Issuer "CA master" (verified OK)) by tignes.restart.be (Postfix) with ESMTPS id 8AAD9E042A; Mon, 1 Sep 2008 09:38:34 +0200 (CEST) Received: from morzine.restart.bel (morzine.restart.bel [IPv6:2001:41d0:1:2ad2:1:2::]) (authenticated bits=0) by restart.be (8.14.3/8.14.3) with ESMTP id m817cVTj043795; Mon, 1 Sep 2008 09:38:32 +0200 (CEST) (envelope-from hlh@restart.be) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=restart.be; s=avoriaz; t=1220254713; bh=I/AYQb6FQvEW5RFcMb6MYbnRJBxaSmi5mdR3kN7 0xwY=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=kusyeykCyos2 Caz6y5E4gR/Y0sfXJkuRLBPARW5s6Lux+wh3lGLxyOccFsfkemgzyB6uB/CM3cHDDkF 6Ig5tSg== DomainKey-Signature: a=rsa-sha1; s=avoriaz; d=restart.be; c=nofws; q=dns; h=message-id:date:from:organization:user-agent:mime-version:to:cc: subject:references:in-reply-to:content-type: content-transfer-encoding:x-scanned-by; b=fxt3YAm5dRdDxuD/KhnBD6Sj4JIRYCDs5AmNvJ+nYw9CKFdBqgWOJP/7upusvuazR SQIv9bj8FavLchAyohyGA== Message-ID: <48BB9BF7.8090202@restart.be> Date: Mon, 01 Sep 2008 09:38:31 +0200 From: Henri Hennebert Organization: RestartSoft User-Agent: Thunderbird 2.0.0.16 (X11/20080802) MIME-Version: 1.0 To: John Birrell References: <20080901021528.GB56694@what-creek.com> In-Reply-To: <20080901021528.GB56694@what-creek.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.64 on IPv6:2001:41d0:1:2ad2:1:1:: Cc: stable@freebsd.org Subject: Re: ZFS performance issues (solved?!) 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: Mon, 01 Sep 2008 07:39:06 -0000 John Birrell wrote: > For those people experiencing a performance degradation since the DTrace import, > please update your copy of src/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c > by either cvsup of direct edit to remove "#define KMEM_DEBUG". > > You only need to rebuild the opensolaris kernel module after this change. The code > is shared between ZFS and DTrace via the opensolaris kernel module. > > This is also the reason why you found it necessary to add KDB, DDB and STACK to > your kernel. After removing KMEM_DEBUG, you won't need those. > > Please confirm that this solves the problem you have been seeing. Great, now everything is back to normal Thanks Henri > > -- > John Birrell > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"